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# WikiDoc Infectious Disease Project  Pathogen-Based Infections

## Pathogens of Public Health Significance

## Pathogens of Clinical Significance

### Bacteria  Gram-Positive Cocci

# Enterococcus faecalis
- Enterococcus faecalis Return to Top
- 1. Bacteremia
- 1.1 Ampicillin or penicillin susceptible
- Preferred regimen (1): Ampicillin 2 g IV q4-6h
- Preferred regimen (2): Ampicillin 2 g IV q4-6h AND Gentamicin 1 mg/kg IV/IM q8h
- 1.2 Ampicillin resistant and vancomycin susceptible or penicillin allergy
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h AND Gentamicin 1 mg/kg IV/IM q8h
- Preferred regimen (2): Linezolid 600 mg IV q12h
- Preferred regimen (3): Daptomycin 6 mg/kg IV q24h
- 1.3 Ampicillin and vancomycin resistant
- Preferred regimen (1): Linezolid 600 mg IV q12h
- Preferred regimen (2): Daptomycin 6 mg/kg IV q24h
- 2. Endocarditis
- 2.1 Endocarditis in adults
- 2.1.1 Strains susceptible to penicillin, gentamicin, and vancomycin
- Preferred regimen: (Ampicillin 12 g IV q24h for 46 weeks OR Aqueous crystalline penicillin G sodium 1830 MU IV q24h for 46 weeks) AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 46 weeks
- Alternative regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- Note (1): In case of native valve endocarditis with symptoms  3 months, a 4-week course of therapy is recommended.
- Note (2): In case of native valve endocarditis with symptoms > 3 months, a 6-week course of therapy is recommended.
- Note (3): In case of prosthetic valve or other prosthetic cardiac material, a minimum of 6-week course of therapy is recommended.
- 2.1.2 Strains susceptible to penicillin, streptomycin, and vancomycin and resistant to gentamicin
- Preferred regimen: (Ampicillin 12 g IV q24h for 46 weeks OR Aqueous crystalline penicillin G sodium 24 MU IV q24h for 46 weeks) AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 46 weeks
- Alternate regimen: Vancomycin hydrochloride 30 mg/kg IV q24h  for 6 weeks AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 6 weeks
- 2.1.3 Strains resistant to penicillin and susceptible to aminoglycoside and vancomycin
- 2.1.3.1  Lactamaseproducing strain
- Preferred regimen: Ampicillin-sulbactam 12 g IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h 6 weeks
- Alternate regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- 2.1.3.2 Intrinsic penicillin resistance
- Preferred regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- 2.1.4 Strains resistant to penicillin, aminoglycoside, and vancomycin
- Preferred regimen (1): (Imipenem OR Cilastatin 2 g/day IV for  8weeks) AND Ampicillin 12 g/day IV for  8 weeks
- Preferred regimen (2): Ceftriaxone sodium 4 g IV/IM q24h for  8weeks AND Ampicillin 12 g IV q24h for  8 weeks
- 2.2 Endocarditis in pediatrics
- 2.2.1 Strains susceptible to penicillin, gentamicin, and vancomycin
- Preferred regimen: (Ampicillin 300 mg/kg IV q24h for 46 weeks OR Penicillin 0.3 MU/kg IV q24h for 46 weeks) AND Gentamicin 3 mg/kg IV/IM q24h 46 weeks
- Note (1): In case of native valve endocarditis with symptoms  3 months, a 4-week course of therapy is recommended.
- Note (2): In case of native valve endocarditis with symptoms > 3 months, a 6-week course of therapy is recommended.
- Note (3): In case of prosthetic valve or other prosthetic cardiac material, a minimum of 6-week course of therapy is recommended.
- Alternate regimen : Vancomycin 40 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- 2.2.2 Strains susceptible to penicillin, streptomycin, and vancomycin and resistant to gentamicin
- Preferred regimen: (Ampicillin 300 mg/kg IV q24h for 46 weeks OR Penicillin 0.3 MU/kg IV q24h for 46 weeks) AND Streptomycin 2030 mg/kg IV/IM q24h for 46 weeks
- Alternate regimen: Vancomycin hydrochloride 40 mg/kg IV q24h for 6 weeks AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 6 weeks
- 2.2.3 Strains resistant to penicillin and susceptible to aminoglycoside and vancomycin
- 2.2.3.1  Lactamaseproducing strain
- Preferred regimen: Ampicillin-sulbactam 300 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- Alternate regimen: Vancomycin 40 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- 2.2.3.2 Intrinsic penicillin resistance
- Preferred regimen: Vancomycin 40 mg/kg IV q24h AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- 2.2.4 Strains resistant to penicillin, aminoglycoside, and vancomycin
- Preferred regimen: Imipenem/Cilastatin 60100 mg/kg IV q24h for  8 weeks AND Ampicillin 300 mg/kg IV q24h for  8 weeks
- Alternate regimen: Ceftriaxone 100 mg/kg IV/IM q24h AND Ampicillin 300 mg/kg IV q24h for  8 weeks
- 3. Meningitis
- 3.1 Ampicillin susceptible
- Preferred regimen: Ampicillin 12 g/day IV q4h AND Gentamicin 5 mg/kg/day IV q8h
- 3.2 Ampicillin resistant
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h AND Gentamicin 5 mg/kg/day IV q8h
- 3.3 Ampicillin and vancomycin resistant
- Preferred regimen: Linezolid 600 mg IV q12h
- 4. Urinary tract infections 
- Preferred regimen (1): Nitrofurantoin 100 mg PO q6h for 5 days
- Preferred regimen (2): Fosfomycin 3 g PO single dose
- Preferred regimen (3): Amoxicillin 875 mg to 1 g PO q12h for 5 days
- 5. Intra abdominal or wound infections 
- Preferred regimen (1): Penicillin
- Preferred regimen (2): Ampicillin
- Alternative regimen (Penicillin allergy or high-level Penicillin resistance): Vancomycin
- Alternative regimen (For complicated skin-skin structure and intra-abdominal infection): Tigecycline 100 mg IV single dose and 50 mg IV q12h
- Enterococcus faecium Return to Top
- 1. Bacteremia
- 1.1 Ampicillin or penicillin susceptible
- Preferred regimen (1): Ampicillin 2 g IV q4-6h
- Preferred regimen (2): Ampicillin 2 g IV q4-6h AND Gentamicin 1 mg/kg IV/IM q8h
- 1.2 Ampicillin resistant and vancomycin susceptible or penicillin allergy
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h AND Gentamicin 1 mg/kg IV/IM q8h
- Preferred regimen (2): Linezolid 600 mg IV q12h
- Preferred regimen (3): Daptomycin 6 mg/kg IV q24h.
- 1.3 Ampicillin and vancomycin resistant
- Preferred regimen (1): Linezolid 600 mg IV q12h
- Preferred regimen (2): Daptomycin 6 mg/kg IV q24h
- 2. Endocarditis
- 2.1 Endocarditis in adults
- 2.1.1 Strains susceptible to penicillin, gentamicin, and vancomycin
- Preferred regimen: (Ampicillin 12 g IV q24h for 46 weeks OR Aqueous crystalline penicillin G sodium 1830 MU IV q24h for 46 weeks) AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 46 weeks
- Alternative regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- Alternate regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- Note (1): In case of native valve endocarditis with symptoms  3 months, a 4-week course of therapy is recommended.
- Note (2): In case of native valve endocarditis with symptoms > 3 months, a 6-week course of therapy is recommended.
- Note (3): In case of prosthetic valve or other prosthetic cardiac material, a minimum of 6-week course of therapy is recommended.
- 2.1.2 Strains susceptible to penicillin, streptomycin, and vancomycin and resistant to gentamicin
- Preferred regimen: (Ampicillin 12 g IV q24h for 46 weeks OR Aqueous crystalline penicillin G sodium 24 MU/day IV q24h for 46 weeks) AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 46 weeks
- Alternate regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 6 weeks
- 2.1.3 Strains resistant to penicillin and susceptible to aminoglycoside and vancomycin
- 2.1.3.1  Lactamaseproducing strain
- Preferred regimen: Ampicillin-sulbactam 12 g IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- Alternate regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- 2.1.3.2 Intrinsic penicillin resistance
- Preferred regimen: Vancomycin hydrochloride 30 mg/kg IV q24h for 6 weeks AND Gentamicin sulfate 3 mg/kg IV/IM q24h for 6 weeks
- 2.1.4 Strains resistant to penicillin, aminoglycoside, and vancomycin
- Preferred regimen (1): Linezolid 1200 mg IV/PO q24h  8 weeks
- Preferred regimen (2): Quinupristin-Dalfopristin 22.5 mg/kg IV q24h  8 weeks
- 2.2 Endocarditis in pediatrics
- 2.2.1 Strains susceptible to penicillin, gentamicin, and vancomycin
- Preferred regimen: (Ampicillin 300 mg/kg IV q24h for 46 weeks OR Penicillin 0.3MU/kg IV q24h for 46 weeks) AND Gentamicin 3 mg/kg IV/IM q24h 46 weeks
- Alternate regimen: Vancomycin 40 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- Note (1): In case of native valve endocarditis with symptoms  3 months, a 4-week course of therapy is recommended.
- Note (2): In case of native valve endocarditis with symptoms > 3 months, a 6-week course of therapy is recommended.
- Note (3): In case of prosthetic valve or other prosthetic cardiac material, a minimum of 6-week course of therapy is recommended.
- 2.2.2 Strains Susceptible to penicillin, streptomycin, and vancomycin and resistant to gentamicin
- Preferred regimen: (Ampicillin 300 mg/kg IV q24h for 46 weeks OR Penicillin 0.3MU/kg IV q24h for 46 weeks) AND Streptomycin 2030 mg/kg IV/IM q24h for 46 weeks
- Alternate regimen: Vancomycin hydrochloride 40 mg/kg IV q24h for 6 weeks AND Streptomycin sulfate 15 mg/kg IV/IM q24h for 6 weeks
- 2.2.3 Strains resistant to penicillin and susceptible to aminoglycoside and vancomycin
- 2.2.3.1  Lactamaseproducing strain
- Preferred regimen: Ampicillin-sulbactam 300 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- Alternate regimen: Vancomycin 40 mg/kg IV q24h for 6 weeks AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- 2.2.3.2 Intrinsic penicillin resistance
- Preferred regimen: Vancomycin 40 mg/kg IV q24h AND Gentamicin 3 mg/kg IV/IM q24h for 6 weeks
- 2.2.4 Strains resistant to penicillin, aminoglycoside, and vancomycin
- Preferred regimen (1): Linezolid 30 mg/kg IV/PO q24h  8 weeks
- Preferred regimen (2): Quinupristin-Dalfopristin 22.5 mg/kg IV q24h  8 weeks
- 3. Meningitis
- 3.1 Ampicillin susceptible
- Preferred regimen: Ampicillin 12 g/day IV q4h AND Gentamicin 5 mg/kg/day IV q8h
- 3.2 Ampicillin resistant
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h AND Gentamicin 5 mg/kg/day IV q8h
- 3.3 Ampicillin and vancomycin resistant
- Preferred regimen: Linezolid 600 mg IV q12h
- 4. Urinary tract infections
- Preferred regimen (1): Nitrofurantoin 100 mg PO q6h for 5 days
- Preferred regimen (2): Fosfomycin 3 g PO single dose
- Preferred regimen (3): Amoxicillin 875 mg to 1 g PO q12h for 5 days
- 5. Intra abdominal or wound infections 
- Preferred regimen (1): Penicillin
- Preferred regimen (2): Ampicillin
- Alternative regimen (penicillin allergy or high-level penicillin resistance): Vancomycin
- Alternative regimen (for complicated skin-skin structure and intra-abdominal infection): Tigecycline 100 mg IV single dose and 50 mg IV q12h
- Staphylococcus aureus Return to Top
- Staphylococcus aureus treatment
- 1. Infectious endocarditis
- 1.1 In adults
- Preferred regimen (1): Vancomycin 15-20 mg/kg IV q8-12h
- Preferred regimen (2): Daptomycin 6mg/kg/dose IV qd
- 2. Intravascular catheter-related infections
- 2.1 Methicillin susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q6h
- Preferred regimen (2): Oxacillin 2 g IV q6h
- Alternative regimen (1): Cefazolin 2 g IV q8h
- Alternative regimen (2): Vancomycin 15 mg/kg IV q12h
- 2.1.1 Pediatric dose of Nafcillin
- 2.1.1.1 Neonates (< 4 weeks)
- For < 1200 g: Nafcillin 50 mg/kg/day q12h
- For  7 days of age and 12002000 g: Nafcillin 50 mg/kg/day q12h
- For  7 days of age and > 2000 g: Nafcillin 75 mg/kg/day q8h
- For > 7 days of age and 12002000 g: Nafcillin 75 mg/kg/day q8h
- For > 7 days of age and > 2000 g: Nafcillin 100 mg/kg/day q6h
- 2.1.1.2 Infants and children (> 4 weeks)
- Nafcillin 100200 mg/kg/day q46h
- 2.1.2 Pediatric dose of Oxacillin
- 2.1.2.1 Neonates (< 4 weeks)
- For < 1200 g: Oxacillin 50 mg/kg/day q12h
- For Postnatal age < 7 days and 12002000 g: Oxacillin 50100 mg/kg/day q12h
- For Postnatal age  2000 g: Oxacillin 75150 mg/kg/day q8h
- For Postnatal age  7 days and 12002000 g: Oxacillin 75150 mg/kg/day q8h
- For Postnatal age  7 days and > 2000 g: Oxacillin 100200 mg/kg/day q6h
- 2.1.2.2 Infants and children(> 4weeks)
- Oxacillin 150200 mg/kg/day q46h
- 2.1.3 Pediatric dose of Cefazolin
- 2.1.3.1 Neonates (< 4 weeks)
- Postnatal age  7 days: Cefazolin 40 mg/kg/day q12h
- Postnatal age > 7 days and  2000 g: Cefazolin 40 mg/kg/day q12h
- Postnatal age > 7 days and > 2000 g: Cefazolin 60 mg/kg/day q8h
- 2.1.3.2 Infants and children (> 4 weeks)
- Cefazolin 50 mg/kg/day q8h.
- 2.1.4 Pediatric dose of Vancomycin
- 2.1.4.1 Neonates (< 4 weeks)
- Postnatal age  7 days and < 1200 g: Vancomycin 15 mg/kg/day q24h.
- Postnatal age  7 days and 12002000 g: Vancomycin 1015 mg/kg q1218h.
- Postnatal age  7 days and > 2000 g: Vancomycin 1015 mg/kg q812h.
- Postnatal age > 7 days and < 1200 g: Vancomycin 15 mg/kg/day q24h.
- Postnatal age > 7 days and 12002000 g: Vancomycin 1015 mg/kg q812h.
- Postnatal age > 7 days and > 2000 g: Vancomycin 1520 mg/kg q8h.
- 2.1.4.2 Infants and children (> 4 weeks)
- Vancomycin 40 mg/kg/day q68h.
- 2.2 Methicillin resistant Staphylococcus aureus (MRSA)
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h
- Preferred regimen (2): Daptomycin 68 mg/kg/day IV
- Preferred regimen (3): Linezolid 10 mg/kg IV/PO q12h
- Preferred regimen (4): Vancomycin 15 mg/kg IV q12h AND (Rifampicin IV or Gentamycin IV)
- Preferred regimen (5): Trimethoprim-Sulfamethoxazole 612 mg TMP/kg/day q12h alone (if susceptible)
- 2.2.1 Pediatric dose of Linezolid
- 2.2.1.1 Neonates (< 4 weeks)
- For < 1200 g: Linezolid 10 mg/kg q812h (note: q12h in patients < 34 weeks gestation and < 1 week of age).
- For < 7 days of age and  1200 g: Linezolid 10 mg/kg q812h (note: q12h in patients < 34 weeks gestation and < 1 week of age).
- For  7 days and  1200 g: Linezolid 10 mg/kg q8h
- 2.2.1.2 Infants and children  4 weeks)
- Linezolid 10 mg/kg q8h
- 2.2.1.3 Children  12 years and adolescents
- Linezolid 10 mg/kg q12h
- 2.2.2 Pediatric dose of Gentamycin
- 2.2.2.1 Neonates (< 4 weeks)
- Premature neonates and < 1000 g: Gentamycin 3.5 mg/kg q24h
- < 1200 g: Gentamycin 2.5 mg/kg q18-24h.
- Postnatal age  7 days: Gentamycin 2.5 mg/kg q12h.
- Postnatal age > 7 days and 12002000 g: Gentamycin 2.5 mg/kg q8-12h.
- Postnatal age > 7 days and > 1200 g: Gentamycin 2.5 mg/kg q8h.
- Premature neonates with normal renal function: Gentamycin 3.54 mg/kg q24h.
- Term neonates with normal renal function: Gentamycin 3.55 mg/kg q24h.
- 2.2.2.2 Infants and children  4 weeks)
- Gentamycin 2.5 mg/kg q8h; qd dosing in patients with normal renal function, Gentamycin 57.5 mg/kg q24h.
- 2.2.2.3 Children  5 years
- Gentamycin 22.5 mg/kg q8h; qd with normal renal function, Gentamycin 57.5 mg/kg q24h.
- 2.2.3 Pediatric dose of Trimethoprim-Sulfamethoxazole
- 2.2.3.1 Infants > 2 months of age and children of mild-to-moderate infections
- Trimethoprim-Sulfamethoxazole 612 mg TMP/kg/day q12h; serious infection- Trimethoprim-Sulfamethoxazole 1520 mg TMP/kg/day  q6-8h.
- 3. Cellulitis
- 3.1.1 In adults
- Preferred regimen (1): Clindamycin 300450 mg PO tid
- Preferred regimen (2): Trimethoprim-Sulfamethoxazole 12 DS (double strength) tab PO bid
- Preferred regimen (3): Doxycycline 100 mg PO bid
- Preferred regimen (4): Minocycline 200 mg as a single dose THEN 100 mg PO bid
- Preferred regimen (5): Linezolid 600 mg PO bid
- 3.1.2 In children
- Preferred regimen (1): Clindamycin 1013 mg/kg PO q68h, not to exceed 40 mg/kg/day
- Preferred regimen (2): Trimethoprim 46 mg/kg, Sulfamethoxazole 2030 mg/kg PO q12h
- Preferred regimen (3)
- 3.1 If patient body weight < 45kg then Doxycycline 2 mg/kg PO q12h
- 3.2 If patient body weight 45kg then Doxycycline adult dose
- Preferred regimen (4): Minocycline 4 mg/kg PO 200 mg as a single dose, THEN Minocycline 2 mg/kg PO q12h
- Preferred regimen (5): Linezolid 10 mg/kg PO q8h, (max: 600 mg)
- 3.2 Nonpurulent cellulitis (defined as cellulitis with no purulent drainage or exudate and no associated abscess)
- 3.2.1 In adults
- Preferred regimen (1): Beta-lactam (eg, Cephalexin and Dicloxacillin) 500 mg PO qid
- Preferred regimen (2): Clindamycin 300450 mg PO tid
- Preferred regimen (3): Amoxicillin 500 PO mg tid
- Preferred regimen (4): Linezolid 600 mg PO bid
- Note (1): Empirical therapy for beta-hemolytic streptococci is recommended. Empirical coverage for CA-MRSA is recommended in patients who do not respond to beta-lactam therapy and may be considered in those with systemic toxicity.
- Note (2): Provide coverage for both beta-hemolytic streptococci and CA-MRSA beta-lactam (eg, Amoxicillin) with or without Trimethoprim-Sulfamethoxazole or a Tetracycline
- 3.2.2 In children
- Preferred regimen (1): Clindamycin 1013 mg/kg PO q68h, not to exceed 40 mg/kg/day
- Preferred regimen (2): Trimethoprim 46 mg/kg, Sulfamethoxazole 2030 mg/kg PO q12h
- Preferred regimen (3): Linezolid 10 mg/kg PO q8h, not to exceed 600 mg
- Note (1): Clindamycin causes Clostridium difficileassociated disease may occur more frequently, compared with other oral agents.
- Note (2): Trimethoprim-Sulfamethoxazole not recommended for women in the third trimester of pregnancy and for children ,2 months of age.
- Note (3): Tetracyclines are not recommended for children under 8 years of age and are pregnancy category D.
- 4. Brain abscess
- 4.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- 4.1.1 In adults
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h for 46 weeks
- Alternative regimen (1): Linezolid 600 mg PO/IV q12h for 46 weeks
- Alternative regimen (2): Trimethoprim-Sulfamethoxazole 5 mg/kg PO/IV q812h for 46 weeks
- 4.1.2 In children
- Preferred regimen (1): Vancomycin15 mg/kg/dose IV q6h
- Preferred regimen (2): Linezolid 10 mg/kg/dose PO/IV q8h
- Note: Consider the addition of Rifampin 600 mg qd OR 300450 mg bid to Vancomycin.
- 4.2 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q4h
- Preferred regimen (2): Oxacillin 2 g IV q4h
- Alternative regimen: Vancomycin 3045 mg/kg/day IV q812h
- 5. Cerebrospinal fluid shunt infection
- 5.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h with or without Rifampin 600 mg IV or PO q24h
- Note: Shunt removal is recommended, and it should not be replaced until cerebrospinal fluid cultures are repeatedly negative.
- 5.2 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q4h with or without Rifampin 600 mg IV/PO q24h
- Preferred regimen (2): Oxacillin 2 g IV q4h
- 6. Spinal epidural abscess
- 6.1 Penicillin-susceptible Staphylococcus aureus or Streptococcus
- Preferred regimen: Penicillin G 4 MU IV q4h for 24 weeks, THEN PO to complete 68 weeks
- 6.2 Methicillin-susceptible Staphylococcus aureus or Streptococcus
- Preferred regimen (1): Cefazolin 2 g IV q8h for 24 weeks, THEN PO to complete 68 weeks
- Preferred regimen (2): Nafcillin 2 g IV q4h for 24 weeks, THEN PO to complete 68 weeks
- Preferred regimen (3): Oxacillin 2 g IV q4h for 24 weeks, THEN PO to complete 68 weeks
- Alternative regimen: Clindamycin 600 mg IV q6h for 24 weeks, THEN PO to complete 68 weeks
- 6.3 Methicillin-resistant Staphylococcus aureus (MRSA)
- 6.3.1 In adults
- Preferred regimen: Vancomycin loading dose 2530 mg/kg IV THEN Vancomycin 1520 mg/kg IV q812h for 24 weeks, THEN PO to complete 68 weeks
- Alternative regimen (1): Linezolid 600 mg PO/IV q12h for 46 weeks
- Alternative regimen (2): Trimethoprim-Sulfamethoxazole 5 mg/kg PO/IV q812h for 46 weeks
- 6.3.2 Pediatric dose
- Preferred regimen (1): Vancomycin 15 mg/kg IV q6h
- Preferred regimen (2): Linezolid 10 mg/kg PO/IV q8h
- Note: Consider the addition of Rifampin 600 mg qd or 300450 mg bid to Vancomycin in adult patients.
- 7.  Bacterial meningitis
- 7.1 Methicillin susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 912 g/day IV q4h
- Preferred regimen (2): Oxacillin 912 g/day IV q4h
- Alternative regimen (1): Vancomycin 3045 mg/kg/day IV q812h
- Alternative regimen (2): Meropenem 6 g/day IV q8h
- 7.2 Methicillin resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h
- Alternative regimen (1): Trimethoprim-Sulfamethoxazole 1020 mg/kg/day q612h
- Alternative regimen (2): Linezolid 600 mg IV q12h
- Note: Consider the addition of Rifampin 600 mg qd or 300450 mg bid to Vancomycin in adult patients.
- 8. Septic thrombosis of cavernous or dural venous sinus
- 8.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- 8.1.1 In adults
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h for 46 weeks
- Alternative regimen (1): Linezolid 600 mg PO/IV q12h for 46 weeks
- Alternative regimen (2): Trimethoprim-Sulfamethoxazole 5 mg/kg/dose PO/IV q812h for 46 weeks
- 8.1.2 Pediatric dose
- Preferred regimen (1): Vancomycin 15 mg/kg IV q6h
- Preferred regimen (2): Linezolid 10 mg/kg PO/IV q8h
- Note (1): Surgical evaluation for incision and drainage of contiguous sites of infection or abscess is recommended whenever possible.
- Note (2): Consider the addition of Rifampin 600 mg qd or 300450 mg bid to Vancomycin.
- 9. Subdural empyema
- 9.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- 9.1.1 In adults
- Preferred regimen: Vancomycin 3045 mg/kg/day IV q812h for 46 weeks
- Alternative regimen (1): Linezolid 600 mg PO/IV q12h for 46 weeks
- Alternative regimen (2): Trimethoprim-Sulfamethoxazole 5 mg/kg PO/IV q812h for 46 weeks
- 9.1.2 In children
- Preferred regimen (1): Vancomycin 15 mg/kg IV q6h
- Preferred regimen (2): Linezolid 10 mg/kg PO/IV q8h
- Note: Consider the addition of Rifampin 600 mg qd or 300450 mg bid to Vancomycin.
- 10.  Acute conjunctivitis
- 10.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin ointment 1% qid
- 11. Appendicitis
- 11.1 Health careassociated complicated intra-abdominal infection
- 11.1.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h
- 12. Diverticulitis
- 12.1 Health careassociated complicated intra-abdominal infection
- 12.1.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h.
- 13. Peritonitis secondary to bowel perforation, peritonitis secondary to ruptured appendix, peritonitis secondary to ruptured  appendix, typhlitis
- 13.1 Health careassociated complicated intra-abdominal infection
- 13.1.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h
- 14. Cystic fibrosis
- 14.1 Adults
- 14.1.1 If methicillin sensitive staphylococcus aureus
- Preferred Regimen (1): Nafcillin 2 gm IV q4h
- Preferred Regimen (2): Oxacillin 2 gm IV q4h
- 14.1.2 If methicillin resistant staphylococcus aureus
- Preferred Regimen (1): Vancomycin 15-20 mg/kg IV q8-12h
- Preferred Regimen (2): Linezolid 600 mg PO/IV q12h
- 14.2 Pediatric
- 14.2.1 If methicillin sensitive staphylococcus aureus
- Preferred Regimen (1): Nafcillin 5 mg/kg q6h (Age >28 days)
- Preferred Regimen (2): Oxacillin 75 mg/kg q6h (Age >28 days)
- 14.2.2 If methicillin resistant staphylococcus aureus
- Preferred Regimen (1): Vancomycin 40 mg/kg  q6-8h (Age >28 days)
- Preferred Regimen (2): Linezolid 10 mg/kg PO/IV q8h (up to age 12)
- 15. Bronchiectasis
- 15.1 In adults
- 15.1.1 Recommended first-line treatment and length of treatment
- 15.1.1.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Flucloxacillin 500 mg PO qds for 14 days
- 15.1.1.2  Methicillin-resistant Staphylococcus aureus (MRSA)
- Patient's body weight is < 50 kg
- Preferred regimen: Rifampicin 450 mg PO qd AND Trimethoprim 200 mg PO bd for 14 days
- Patient's body weight is > 50 kg
- Preferred regimen: Rifampicin 600 mg PO qd AND Trimethoprim 200 mg PO bd for 14 days
- 15.1.1.3 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen (1): Vancomycin 1 g IV bd (monitor serum levels and adjust dose accordingly)
- Preferred regimen (2): Teicoplanin 400 mg qd for 14 days
- 15.1.2 Recommended second-line treatment and length of treatment
- 15.1.2.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Clarithromycin 500 mg PO bd 14 days
- 15.1.2.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Patient's body weight is < 50 kg
- Preferred regimen: Rifampicin 450 mg PO qd AND Doxycycline 200 mg PO qd for 14 days
- Patient's body weight is > 50 kg
- Preferred regimen: Rifampicin 600 mg PO qd AND Doxycycline 200 mg PO qd for 14 days
- Third-line: Linezolid 600 mg bd for 14 days
- 15.1.2.3 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Linezolid 600 mg IV bd for 14 days
- 15.2 In children
- 15.2.1 Recommended first-line treatment and length of treatment
- 15.2.1.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Flucloxacillin
- 15.2.1.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- 15.2.1.2.1 Children (< 12 yr)
- Preferred regimen: Trimethoprim 4-6 mg/kg/day PO q12h
- 15.2.1.2.2 Children (> 12 yr)
- Preferred regimen (1): Trimethoprim 100-200 mg PO q12h
- Preferred regimen (2): Rifampicin 450 mg PO od (or Rifampicin 600 mg PO od)
- 15.2.1.3 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen (1): Vancomycin 45-60 mg/kg/day IV q8-12h
- Preferred regimen (2): Teicoplanin 400 mg qd for 14 days
- 15.2.2 Recommended second-line treatment and length of treatment
- 15.2.2.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Clarithromycin 15 mg/kg/day PO q12h
- 15.2.2.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen (1): Rifampicin AND Doxycycline 2-5 mg/kg/day PO/IV q12-24h  (max dose: 200 mg/24 hr)
- Preferred regimen (2): Rifampicin AND Doxycycline 2-5 mg/kg/day PO/IV q12-24h  (max dose: 200 mg/24 hr)
- Third-line: Linezolid 10 mg/kg PO/IV q12h
- 15.2.2.3 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Linezolid 10 mg/kg PO/IV q12h
- 15.3 Long-term oral antibiotic treatment
- 15.3.1 In adults
- 15.3.1.1 Recommended first-line treatment and length of treatment
- 15.3.1.1.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Flucloxacillin 500 mg PO bd
- 15.3.1.2 Recommended second-line treatment and length of treatment
- 15.3.1.2.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen: Clarithromycin 250 mg PO bd
- 16. Empyema
- Preferred regimen (1): Nafcillin  2 gm IV q4h
- Preferred regimen (2): oxacillin  2 gm IV q4h (if MSSA)
- Alternative regimen (1): Vancomycin  1 gm IV q12h
- Alternative regimen (2): Linezolid  600 mg PO bid (if MRSA)
- 17. Community-acquired pneumonia
- 17.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred Regimen (1): Nafcillin 1000-2000 mg q4h
- Preferred Regimen (2): Oxacillin 2 g IV q4h
- Preferred Regimen (3): Flucloxacillin 250 mg IM/IV q6h
- Alternative Regimen (1): Cefazolin 500 mg IV q12h
- Alternative Regimen (2): Clindamycin 150-450 mg PO q6-8h
- 17.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred Regimen (1): Vancomycin 45-60 mg/kg/day q8-12h (max: 2000 mg/dose) for 7-21 days
- Preferred Regimen (2): Linezolid 600 mg PO/IV q12h for 10-14 days
- Alternative Regimen: Trimethoprim-Sulfamethoxazole 1-2 double-strength tablets (800/160 mg) q12-24h
- 18. Olecranon bursitis or prepatellar bursitis
- 18.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q4h
- Preferred regimen (2): Oxacillin 2 g IV q4h
- Preferred regimen (3): Dicloxacillin 500 mg PO qid
- 18.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen (1): Vancomycin 1 g IV q12h
- Preferred regimen (2): Linezolid 600 mg PO qd
- Note: Initially aspirate q24h and treat for a minimum of 23 weeks.
- 19. Septic arthritis
- 19.1 In adults
- 19.1.1 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h
- Alternative regimen (1): Daptomycin 6 mg/kg IV q24h in adults
- Alternative regimen (2): Linezolid 600 mg PO/IV q12h
- Alternative regimen (3): Clindamycin 600 mg PO/IV q8h
- Alternative regimen (4): TMP-SMX 3.54.0 mg/kg PO/IV q812h
- 19.2.1 Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q6h
- Preferred regimen (2): Clindamycin 900 mg IV q8h
- Alternative regimen (1): Cefazolin 0.251 g IV/IM q68h
- Alternative regimen (2): Vancomycin 500 mg IV q6h or 1 g IV q12h
- 19.2 In childern
- Preferred regimen (1): Vancomycin 15 mg/kg IV q6h
- Preferred regimen (2): Daptomycin 610 mg/kg IV q24h
- Preferred regimen (3): Linezolid 10 mg/kg PO/IV q8h
- Preferred regimen (4): Clindamycin 1013 mg/kg PO/IV q68h
- 20. Septic arthritis, prosthetic joint infection (device-related osteoarticular infections)
- 20.1  Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin 2 g IV q46h
- Preferred regimen (2): Oxacillin 2 g IV q46h
- Alternative regimen (1): Cefazolin 12 g IV q8h
- Alternative regimen (2): Ceftriaxone 2 g IV q24h
- Alternative regimen (if allergic to penicillins) (3): Clindamycin 900 mg IV q8h
- Alternative regimen (if allergic to penicillins) (4): Vancomycin 1520 mg/kg IV q812h, (max: 2 g per dose)
- 20.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Early-onset (2 months after surgery) or acute hematogenous prosthetic joint infections involving a stable implant with short duration (< 3 weeks) of symptoms and debridement (but device retention)
- Preferred regimen: Vancomycin AND Rifampin 600 mg PO qd or 300450 mg PO bid for 2 weeks
- Alternative regimen (1): Daptomycin 6 mg/kg IV q24h AND Rifampin 600 mg PO qd or 300450 mg PO bid for 2 weeks
- Alternative regimen (2): Linezolid 600 IV q8h AND Rifampin 600 mg PO qd or 300450 mg PO bid for 2 weeks
- Note: The above regimen should be followed by Rifampin and a Fluoroquinolone, TMP/SMX, a Tetracycline or Clindamycin for 3-6 months for hips and knees, respectively.
- 21. Hematogenous osteomyelitis
- 21.1 Adult (> 21 yrs)
- 21.1.1 Methicillin-resistant Staphylococcus aureus (MRSA) possible
- Preferred regimen: Vancomycin 1 gm IV q12h (if over 100 kg, 1.5 gm IV q12h)
- 21.1.2 Methicillin-resistant Staphylococcus aureus (MRSA) unlikely
- Preferred regimen (1): Nafcillin
- Preferred regimen (2): Oxacillin 2 gm IV q4h
- 21.2 Children (> 4 months)-Adult
- 21.2.1 Methicillin-resistant Staphylococcus aureus (MRSA) possible
- Preferred regimen: Vancomycin 40 mg IV q68h
- 21.2.2 Methicillin-resistant Staphylococcus aureus (MRSA) unlikely
- Preferred regimen (1): Nafcillin
- Preferred regimen (2): Oxacillin q6h (max. 812 gm per day)
- Note: Add Ceftazidime 50 mg q8h or Cefepime 150 mg q8h if Gram negative bacilli on Gram stain
- 21.3 Newborn (< 4 months.)
- 21.3.1 Methicillin-resistant Staphylococcus aureus (MRSA) possible
- Preferred regimen (1): Vancomycin AND Ceftazidime 2 gm IV q8h
- Preferred regimen (2): Vancomycin AND Cefepime 2 gm IV q12h
- 21.3.2 Methicillin-resistant Staphylococcus aureus (MRSA) unlikely
- Preferred regimen (1): Nafcillin  AND Ceftazidime
- Preferred regimen (2): Oxacillin AND Cefepime
- 21.4 Specific therapy
- 21.4.1  Methicillin-susceptible Staphylococcus aureus (MSSA)
- Preferred regimen (1): Nafcillin
- Preferred regimen (2): Oxacillin 2 gm IV q4h
- Preferred regimen (3): Cefazolin 2 gm IV q8h
- Alternative regimen: Vancomycin 1 gm IV q12h (if over 100 kg, 1.5 gm IV q12h)
- 21.4.2 Methicillin-resistant Staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin 1 gm IV q12h
- Alternative regimen: Linezolid 600 mg q12h PO/IV with or without Rifampin 300 mg PO/IV bid
- 22. Diabetic foot osteomyelitis
- High risk for MRSA
- Preferred regimen (1): Linezolid 600 mg IV or PO q12h
- Preferred regimen (2): Daptomycin 4 mg/kg IV q24h
- Preferred regimen (3): Vancomycin 1520 mg/kg IV q812h (trough: 1020 mg/L)
- 23.  Necrotizing fasciitis
- 23.1 In adult
- Preferred regimen (1): Nafcillin 12 g IV  q4h (severe Pencillin allergy: Vancomycin, linezolid, quinupristin/dalfopristin, daptomycin)
- Preferred regimen (2): Oxacillin 12 g IV  q4h
- Preferred regimen (3): Cefazolin 1 g IV  q8h
- Preferred regimen (4): Vancomycin 15 mg/kg IV bid
- Preferred regimen (5): Clindamycin 600900 mg IV  q8h
- 23.2 In childern
- Preferred regimen (1): Nafcillin 50 mg/kg/dose IV  q6h  (severe Pencillin allergy: Vancomycin, linezolid, quinupristin/dalfopristin, daptomycin)
- Preferred regimen (2): Oxacillin 50 mg/kg/dose IV q6h
- Preferred regimen (3): Cefazolin 33 mg/kg/dose IV q8h
- Preferred regimen (4): Vancomycin 15 mg/kg/dose IV q6h
- Preferred regimen (5): Clindamycin 1013 mg/kg/dose IV q8h  (Bacteriostatic; potential cross-resistance and emergence of resistance in erythromycin-resistant strains; inducible resistance in methicillin resistent staphylococcus aureus)
- 24. Staphylococcal toxic shock syndrome
- 24.1 Methicillin sensitive Staphylococcus aureus
- Preferred regimen (1): Cloxacillin  250-500 mg PO q6h (max dose: 4 g/24 hr)
- Preferred regimen (2): Nafcillin  4-12 g/24 hr IV q4-6hr (max dose: 12 g/24 hr)
- Preferred regimen (3): Cefazolin 0.5-2g IV/IM q8h (max dose: 12 g/24 hr) AND Clindamycin 150-600 mg IV, IM/PO q6-8h  (max dose: 5 g/24 hr IV or IM or 2 g/24 hr PO)
- Alternative regimen (1): Clarithromycin 250-500 mg PO q12h (max dose: 1 g/24 hr) AND Clindamycin 150-600 mg IV, IM/PO q6-8h  (max dose: 5 g/24 hr IV/IM or 2 g/24h PO)
- Alternative regimen (2): Rifampicin AND Linezolid 600 mg IV/PO q12h
- Alternative regimen (3): Daptomycin
- Alternative regimen (4): Tigecycline 100 mg loading dose THEN 50 mg IV q12h
- 24.2 Methicillin resistant Staphylococcus  aureus
- Preferred regimen (1): Clindamycin 150-600 mg IV, IM/PO q6-8h (max dose: 5 g/24h IV/IM or 2 g/24h PO)
- Preferred regimen (2): Linezolid 600 mg IV/PO q12h AND Vancomycin 15-20 mg/kg IV q8-12h, (max: 2 g per dose)
- Preferred regimen (3): Teicoplanin
- Alternative regimen (1): Rifampicin AND Linezolid 600 mg IV/PO q12h
- Alternative regimen (2): Daptomycin
- Alternative regimen (3): Tigecycline 100 mg loading dose THEN 50 mg IV q12h
- 24.3 Glycopeptide resistant or intermediate Staphylococcus aureus
- Preferred regimen: Linezolid 600 mg IV/PO q12h AND Clindamycin 150-600 mg IV, IM/PO q6-8h (max dose: 5 g/24 hr IV/IM or 2 g/24h PO) (if sensitive)
- Alternative regimen (1): Daptomycin
- Alternative regimen (2): Tigecycline 100 mg loading dose THEN 50 mg IV q12h
- Staphylococcus aureus ,prophylaxis
- 1. Prophylaxis for coronary artery bypass graft-associated acute mediastinitis
- 1.1 Methicillin susceptible staphylococcus aureus (MSSA)
- Preferred regimen: A first- or second-generation Cephalosporin is recommended for prophylaxis in patients without MRSA colonization.
- 1.2 Methicillin resistant staphylococcus aureus (MRSA)
- Preferred regimen: Vancomycin alone or in combination with other antibiotics to achieve broader coverage is recommended for prophylaxis in patients with proven or suspected MRSA colonization
- Note (1): Preoperative antibiotics should be administered to all patients to reduce the risk of mediastinitis in cardiac surgery.
- Note (2): The use of intranasal Mupirocin is reasonable in nasal carriers of Staphylococcus aureus.
- Staphylococcus haemolyticus Return to Top
- 1. Methicillin-susceptible strain
- Preferred regimen (1): Nafcillin 12 g IV q4-6h (maximum 12 g/day)
- Preferred regimen (2): Oxacillin 12 g IVq4-6h (maximum 12 g/day)
- Preferred regimen (3): Cefazolin 0.52 g IV q6-8h
- Alternative regimen (1): TMP-SMX 45 mg/kg IV q612h
- Alternative regimen (2): Doxycycline 100200 mg IV q12-24h
- 2. Methicillin-resistant, Glycopeptide-susceptible strain
- Preferred regimen: Vancomycin 1520 mg/kg IV q812h
- 3. Methicillin-resistant, Glycopeptide-resistant strain
- Preferred regimen (1): Daptomycin 46 mg/kg IV q24h
- Preferred regimen (2): Linezolid 600 mg PO/IV q12h
- Staphylococcus epidermidis Return to Top
- Staphylococcus epidermidis
- 1. Methicillin-sensitive Staphylococcus epidermidis
- Preferred regimen (1): Oxacillin 1-2 g IV q4h
- Preferred regimen (2): Nafcillin 1-2 g IV q4h
- Preferred regimen (3): Cephalothin
- Alternative regimen: Rifampin 600 mg/day PO qd AND Sulfamethoxazole and Trimethoprim ((or) Fluoroquinolones) AND Daptomycin 600 mg PO or IV q12h
- Note: 75% of the S. epidermidis are methicillin-resistant.
- 2. Methicillin-resistant Staphylococcus epidermidis
- Preferred regimen: Vancomycin 1 g IV q12h with or without Rifampin 600 mg/day PO qd
- Note: For deep-seated infections consider adding Gentamicin with or without Rifampin 600 mg/day PO qd to the regimen
- 3. Prosthetic device infections
- Preferred regimen: Oxacillin 1-2 g IV q4h ((or) Vancomycin 1 g IV q12h) AND Rifampin 600 mg/day PO qd AND Gentamicin 3 mg/kg/day IV/IM q8-24h is appropriate
- Note: Duration depends on site of infection and severity.
- Staphylococcus lugdunensis Return to Top
- Staphylococcus lugdunensis treatment
- 1. Skin and soft tissue infections
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note:  Abscesses should be drained if possible.
- 2.  Endocarditis
- 2.1 Native valve infectious endocarditis
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Note: should consist of 6 weeks of parenteral beta-lactam therapy or Vancomycin (depending on susceptibility testing and beta-lactam hypersensitivity).
- 2.2 Prosthetic valve infective endocarditis
- Preferred regimen: Combination therapy including a beta-lactam (or Vancomycin) with an Aminoglycoside- Gentamicin 3 mg/kg/day in 1-3 divided doses and Rifampin 300 mg PO/IV q8h for at least 6 weeks
- Note (1): Combine with Vancomycin for the entire duration of therapy and Gentamicin for the first 2 weeks.
- Note (2): The Gentamicin should be administered for the first 2 weeks of therapy; the beta-lactam (or Vancomycin) and Rifampin should be continued for 6 weeks.
- Note (3): Surgery must be considered given the frequency of valvular compromise in the setting of Staphylococcus lugdunensis infective endocarditis.
- Note (4): The treatment of Staphylococcus lugdunensis pacemaker endocarditis includes antibiotic therapy as well as removal of the pacer system
- 3. Bacteremia
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note (1): Bacteremia without endocarditis (often related to an intravascular catheter) appears to have a good prognosis.
- Note (2): For intravascular catheter-related Staphylococcus lugdunensis bacteremia, the catheter should be removed, followed by 14 days of antibiotics, provided that all of the following are applicable
- 2.1 The patient is not diabetic or immunosuppressed.
- 2.2 There is no prosthetic material, thrombophlebitis, infective endocarditis, evidence of metastatic infection.
- 2.3 The patients fever and bacteremia resolve within 72 hours after initiation of appropriate antibiotic therapy.
- 4. Prosthetic devices,
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Preferred regimen (3): Daptomycin 6 mg/kg IV qd for 3 to 4 weeks
- Preferred regimen (4): Linezolid 600 mg IV q12h
- 5. Vertebral osteomyelitis, discitis
- Preferred regimen: Vancomycin 15 to 20 mg/kg IV q8-12h, not to exceed 2 g per dose
- 6. Septic arthritis in adults
- Preferred regimen: Vancomycin 15 mg/kg IV bd, not to exceed 2 g per 24 hours (unless cncentrations in serum are inappropriately low) for 4 weeks.
- Staphylococcus lugdunensis treatment
- 1. Skin and soft tissue infections
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note:  Abscesses should be drained if possible.
- 2.  Endocarditis
- 2.1 Native valve infectious endocarditis
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Note: should consist of 6 weeks of parenteral beta-lactam therapy or Vancomycin (depending on susceptibility testing and beta-lactam hypersensitivity).
- 2.2 Prosthetic valve infective endocarditis
- Preferred regimen: Combination therapy including a beta-lactam (or Vancomycin) with an Aminoglycoside- Gentamicin 3 mg/kg/day in 1-3 divided doses and Rifampin 300 mg PO/IV q8h for at least 6 weeks
- Note (1): Combine with Vancomycin for the entire duration of therapy and Gentamicin for the first 2 weeks.
- Note (2): The Gentamicin should be administered for the first 2 weeks of therapy; the beta-lactam (or Vancomycin) and Rifampin should be continued for 6 weeks.
- Note (3): Surgery must be considered given the frequency of valvular compromise in the setting of Staphylococcus lugdunensis infective endocarditis.
- Note (4): The treatment of Staphylococcus lugdunensis pacemaker endocarditis includes antibiotic therapy as well as removal of the pacer system
- 3. Bacteremia
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note (1): Bacteremia without endocarditis (often related to an intravascular catheter) appears to have a good prognosis.
- Note (2): For intravascular catheter-related Staphylococcus lugdunensis bacteremia, the catheter should be removed, followed by 14 days of antibiotics, provided that all of the following are applicable
- 2.1 The patient is not diabetic or immunosuppressed.
- 2.2 There is no prosthetic material, thrombophlebitis, infective endocarditis, evidence of metastatic infection.
- 2.3 The patients fever and bacteremia resolve within 72 hours after initiation of appropriate antibiotic therapy.
- 4. Prosthetic devices,
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Preferred regimen (3): Daptomycin 6 mg/kg IV qd for 3 to 4 weeks
- Preferred regimen (4): Linezolid 600 mg IV q12h
- 5. Vertebral osteomyelitis, discitis
- Preferred regimen: Vancomycin 15 to 20 mg/kg IV q8-12h, not to exceed 2 g per dose
- 6. Septic arthritis in adults
- Preferred regimen: Vancomycin 15 mg/kg IV bd, not to exceed 2 g per 24 hours (unless cncentrations in serum are inappropriately low) for 4 weeks.
- Staphylococcus lugdunensis treatment
- 1. Skin and soft tissue infections
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note:  Abscesses should be drained if possible.
- 2.  Endocarditis
- 2.1 Native valve infectious endocarditis
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Note: should consist of 6 weeks of parenteral beta-lactam therapy or Vancomycin (depending on susceptibility testing and beta-lactam hypersensitivity).
- 2.2 Prosthetic valve infective endocarditis
- Preferred regimen: Combination therapy including a beta-lactam (or Vancomycin) with an Aminoglycoside- Gentamicin 3 mg/kg/day in 1-3 divided doses and Rifampin 300 mg PO/IV q8h for at least 6 weeks
- Note (1): Combine with Vancomycin for the entire duration of therapy and Gentamicin for the first 2 weeks.
- Note (2): The Gentamicin should be administered for the first 2 weeks of therapy; the beta-lactam (or Vancomycin) and Rifampin should be continued for 6 weeks.
- Note (3): Surgery must be considered given the frequency of valvular compromise in the setting of Staphylococcus lugdunensis infective endocarditis.
- Note (4): The treatment of Staphylococcus lugdunensis pacemaker endocarditis includes antibiotic therapy as well as removal of the pacer system
- 3. Bacteremia
- Preferred regimen: Oxacillin 1-2 g IV q4h for 1-2 weeks
- Note (1): Bacteremia without endocarditis (often related to an intravascular catheter) appears to have a good prognosis.
- Note (2): For intravascular catheter-related Staphylococcus lugdunensis bacteremia, the catheter should be removed, followed by 14 days of antibiotics, provided that all of the following are applicable
- 2.1 The patient is not diabetic or immunosuppressed.
- 2.2 There is no prosthetic material, thrombophlebitis, infective endocarditis, evidence of metastatic infection.
- 2.3 The patients fever and bacteremia resolve within 72 hours after initiation of appropriate antibiotic therapy.
- 4. Prosthetic devices,
- Preferred regimen (1): Vancomycin 15 mg/kg IV q12h (target trough concentration, 10 to 15 mcg/mL)
- Preferred regimen (for most patients with normal renal function) (2): Vancomycin 15 to 20 mg/kg (actual body weight) IV q8-12h -for trough concentration of 15 to 20 mcg/mL (minimum inhibitory concentration, 1 mcg/mL or less)
- Preferred regimen (3): Daptomycin 6 mg/kg IV qd for 3 to 4 weeks
- Preferred regimen (4): Linezolid 600 mg IV q12h
- 5. Vertebral osteomyelitis, discitis
- Preferred regimen: Vancomycin 15 to 20 mg/kg IV q8-12h, not to exceed 2 g per dose
- 6. Septic arthritis in adults
- Preferred regimen: Vancomycin 15 mg/kg IV bd, not to exceed 2 g per 24 hours (unless cncentrations in serum are inappropriately low) for 4 weeks.
eeks
- Staphylococcus saprophyticus Return to Top
- Urinary tract infections
- Preferred regimen (1): Cephalexin 500 mg PO qid
- Preferred regimen (2): Amoxicillin-Clavulanate 875/125 mg PO bid
- Preferred regimen (3): TMP-SMX 160800 mg PO bid
- Alternative regimen: Levofloxacin 500 mg PO qd
- Streptobacillus moniliformis Return to Top
- Streptobacillus moniliformis treatment
- 1. Migratory arthropathy and arthritis
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 2. Diarrhea, (especially kids) liver or spleen abscess
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 3. Undifferentiated fever
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 4. Endocarditis, myocarditis, pericarditis (cardiac)
- Preferred regimen: Penicillin 20 MU/day IV divided q4h. Optimal duration recommendation for infective endocarditis is 4 weeks.
- Alternative regimen: Cephalosporins-Ceftriaxone OR Clindamycin OR Erythromycin OR Chloramphenicol AND Streptomycin.
- 5. Meningitis, brain abscess
- Preferred regimen: Penicillin 20 MU/day IV divided q4h.
- Alternative regimen: Cephalosporins-Ceftriaxone OR Clindamycin OR Erythromycin OR Chloramphenicol AND Streptomycin.
- 6. Anemia
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 7.  Pneumonia
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 8. Amnionitis (pregnancy)
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- 9. Renal abscess
- Preferred regimen (uncomplicated disease): Penicillin G 2.4-4.8 MU/day IV divided q6h. If better after 1 wk, switch to oral Amoxicillin OR Penicillin Vk complete 14 days.
- Streptococcus anginosus Return to Top
- 1. Dental abscess
- Preferred regimen: Penicillin V 500 mg PO qid
- Alternative regimen: Vancomycin 1520 mg/kg IV q812h
- 2. Brain abscess
- Preferred regimen (1): Penicillin G 1824 MU/day IV q46h
- Preferred regimen (2): Ceftriaxone 2 g IV q12h
- Alternative regimen: Vancomycin 1520 mg/kg IV q812h
- Streptococcus pneumoniae Return to Top
- Streptococcus pneumonia treatment
- 1. Lung (Community-acquired pneumonia)
- 1.1 Penicillin sensitive (minimum inhibitory concentration < 2 mcg/ml)
- Preferred regimen: Penicillin G 5 to 24 MU IV in equally divided doses q4-6h, Amoxicillin 1 g PO tid (+/- macrolide)
- Alternative regimen:  Macrolides (Azithromycin (IV) 500 mg IV qd for at least 2 days followed by 500 mg PO qd 7 to 10 days or Clarithromycin extended-release tablets 1000 mg PO qd for 7 days) and Oral Cephalosporins-Cefpodoxime 200 mg PO bd, (Cefprozil 500 mg PO bd, Cefditoren 400 mg PO bd, Cefdinir 300 mg PO bd), OR parenteral Cephalosporins-Ceftriaxone 2 g IV q24h (or Cefotaxime 1-2 g IV q6-8h), Clindamycin 600 to 1200 mg IV or IM q6-12h, do not give single IM doses >600 mg; IV infusion rates should not exceed 30 mg/min , Doxycycline 100 mg PO bd, respiratory flouroquniolones.
- 1.2 Penicillin-resistant (Penicillin minimum inhibitory concentration 2)
- Preferred regimen: Ceftriaxone 2 g IV q24h (or Cefotaxime 1-2 g IV q6-8h), respiratory Flouroquniolones Levofloxacin (Levaquin) 500 mg IV/PO q24h for 7 to 14 days or 750 mg IV/PO q24h for 5 days  (or Moxifloxacin (Avelox) 400 mg PO/IV over 60 minutes q24h for 7 to 14 days)
- Alternative regimen: Vancomycin 2 g/day IV q6-12h over at least 60 minutes, Linezolid  600 mg IV/PO q12h for 7 to 21 days , high-dose Amoxicillin (3 g qd with Penicillin minimum concentration of inhibitory <4 mcg/mL).
- 2.Endocarditis
- Preferred regimen (1):  Aqueous crystalline Penicillin-G  6 MU q4-6h IV  for 4 weeks
- Preferred regimen (2) (who are unable to tolerate beta lactams therapy): Vancomycin 15 mg/kg IV every 12 hours (target trough concentration, 10 to 15 mcg/mL) ; for troughs of 15 to 20 mcg/mL (MIC, 1 mcg/mL or less), dose 15 to 20 mg/kg (actual body weight) IV every 8 to 12 hours for most patients with normal renal function
- Preferred regimen (3) (If the isolate is resistant (MIC 2 g/mL) to cefotaxime): Cefotaxime 1-2 g q8-12h IV or IM (max dose: 12 g/24 hr) AND Vancomycin 15 mg/kg/day IV q12h AND Rifampin 300 mg IV/PO q8h for 6 weeks, in combination with appropriate antimicrobial therapy
- Alternative regimen (1): Cefazolin  0.5-2 g q8h IV or IM (max dose: 12 g/24 hr)
- Alternative regimen (2): Ceftriaxone 2 g IV q12h
- Note : Streptococcus pneumoniae with intermediate doses minimum inhibitory concentration (MIC) 0.12 g/mL0.5 g/mL Penicillin resistance (MIC 0.1 to 1.0 g/mL) or high Penicillin resistance (MIC 2.0 g/mL) is being recovered from patients with bacteremia.
- 3. Sinuses (sinusitis)
- Empiric therapy
- 3.1 For initial empiric treatment of acute bacterial rhinosinusitis in adults
- Preferred regimen: Amoxicillin 500 mg/Clavulanate 125 mg PO tid or Amoxicillin 875 mg/Clavulanate 125 mg PO bid for 5 to 7 days recommended by the Infectious Disease Society of America (IDSA)
- Alternative regimen (1): Doxycycline 100 mg PO q12h
- Note: Doxycycline can be used in patients with Penicillin allergy.
- Alternative regimen (2): A respiratory Fluoroquinolone (Levofloxacin or Moxifloxacin) is another recommended drug for Penicillin-allergic patients.
- 3.2 For second-line high-dose therapy for acute bacterial rhinosinusitis in adults
- Preferred regimen: Amoxicillin 2 g/Clavulanate 125 mg PO bid recommended by the Infectious Disease Society of America (IDSA).
- Note: The second line high dose therapy  is recommended in adults who have failed initial therapy, in regions of high endemic rates (10% or greater) of invasive Penicillin-nonsusceptible Streptococcus pneumoniae, severe infection.
- 4. Bronchi (acute exacerbation of chronic bronchitis)
- Preferred regimen (1): Amoxicillin 875 mg PO q12h or 500 mg PO q8h
- Preferred regimen (2): Doxycycline 100 mg PO q12h
- 5. CNS (meningitis)
- Empiric therapy
- Preferred regimen: Vancomycin 15 mg/kg/day IV q12h AND a third-generation cephalosporin (Ceftriaxone 2 g IV q12h OR Cefotaxime 2 g IV q4h or 3 g q6h) AND Rifampin 600 mg IV qd in combination with Vancomycin
- Alternative regimen: Meropenem, fluoroquinolones
- Prevention
- 1. Pneumovax (23-valent) prevents bacteremia; impact on rates of CAP are modest or nil.
- 2. Prevnar vaccine for children <2 yrs age  prevents invasive pneumococcal infection in adults by herd effect. Impact is impressive with rates of invasive pneumococcal infection down 80% in peds and 20-40% in adults.
- 3. Risk for bacteremia in splenectomy, HIV, smokers, black race, multiple myeloma, asthma.
- Streptococcus pyogenes Return to Top
- 1. Streptococcus pyogenes tonsilitis
- Preferred regimen (1): Penicillin V 250 mg PO bid or tid (for children) 250 mg PO qid or 500 mg PO bid (for adults) for 10 days
- Preferred regimen (2): Benzathine penicillin G if 27kg 1,200,000 U IM single-dose
- Alternative regimen (1): Amoxicillin 50 mg/kg/day PO qd for 10 days OR 25 mg/kg/day PO bid for 10 days. Its oral suspension is more tolerable to children and it is better absorbed by the GI tract
- Alternative regimen (2): first generation Cephalosporins are acceptable for treating recurrent group A streptococcus infection but not as first-line therapy
- Alternative regimen (3): Clarithromycin 250 mg PO bid for 10 days OR Azithromycin 12 mg/kg maximum 500 mg PO on day 1 THEN 6 mg/kg maximum 250 mg PO qd on days 2 through 5 OR Erythromycin 20 mg/kg/day PO or 40 mg/kg/day (ethylsuccinate) PO bid for 10 days.
- Alternative regimen (4): Clindamycin for penicillin-intolerant patients with erythromycin-resistant strains.
- Note: Intramuscular penicillin is the only therapy that has been shown to prevent initial attacks of rheumatic fever in controlled studies
- 2. Recurrent Streptococcus pyogenes tonsilitis
- Preferred regimen (1): Clindamycin 20-30 mg/kg/day PO tid (for children), 600 mg/day bid, tid or qid (for adults) for 10 days
- Preferred regimen (2): Amoxicillin-clavulanic acid 40 mg/kg/day PO tid (for children), 500 mg bid (for adults) for 10 days
- Alternative regimen: Benzathine penicillin G if 27kg 1,200,000 U IM single-dose  Rifampin 20 mg/kg/day PO bid for 4 days
- 3. Secondary prophylaxis for rheumatic fever
- Preferred regimen (1): Benzathine penicillin G if 27kg 1,200,000 U IM every 4 weeks
- Alternative regimen (1): Penicillin V potassium 250 mg PO bid
- Alternative regimen (2): Sulfadiazine if 27kg 1 g PO qd
- Duration of treatment: if residual cardiac disease, keep treatment until 40 patient is 40 years old or for 10 years (whichever is longer); if there's no residual cardiac disease keep treatment for 10 years or until age 21 years (whichever is longer); if there's rheumatic fever without carditis keep it for 5 years or until age 21 years (whichever is longer).
- Note: For patients allergic to penicillin and sulfadiazine, consider a macrolide or azalide antibiotic
- 4. Streptococcus pyogenes bacteremia
- Preferred regimen: Penicillin G 4 million units IV q4h AND Clindamycin 900 mg IV q8h for at least 14 days
- Penicillin is added to the regimen to cover any other group A streptococcus which might be resistant to Clindamycin.
- Alternative regimen (1): Erythromycin
- Alternative regimen (2): Azithromycin
- Alternative regimen (3): Clarithromycin
- Alternative regimen (4): any other -lactam
- Note (1): Macrolide resistance is increasing.
- Note (2): Consider using intravenous immune globulin in patients with invasive infection and signs of shock. Immunoglobulin-G IV 1 g/kg day 1, then 0.5 g/kg days 2 & 3.
- Note (3): If shock, administer massive IV fluids (10-20 L/day), Albumin if <2 g/dL, debridement of necrotic tissue.
- 5. Streptococcus pyogenes celulitis
- Preferred regimen: treat as Streptococcus pyogenes bacteremia
- 6 Epiglottitis in childern
- Preferred regimen (1): Cefotaxime 50 mg/kg IV q8h
- Preferred regimen (2): Ceftriaxone 50 mg/kg IV q24h
- Alternative regimen (1): Amoxicillin-SB 100200 mg/kg qd q6h
- Alternative regimen (2): Trimethoprim-Sulfamethoxazole 812 mg/kg bid
- Note: Have tracheostomy set at bedside. Chloro is effective, but potentially less toxic alternative agents available.
- 7 Burn wound sepsis
- Preferred regimen: Vancomycin 1 gm IV q12h AND (Amikacin 10 mg/kg IV loading dose then 7.5 mg/kg IV q12h) AND . Can use Piperacillin-Tazobactam if Piperacillin not available.
- 8. Soft tissue
- Note: For necrotizing fasciitis, surgical consultation for emergent fasciotomy and debridement; repeat debridements usually necessary.
- 9. Muscle
- Note: For myositis-debirdement is recommended.
- 10. Eye
- 10.1 Keratitis
- 10.1.1 Acute bacterial keratitis
- Preferred regimen: Moxifloxacin eye gtts. 1 gtt tid for 7 days
- Alternative therapy: Gatifloxacin eye gtts. 1-2 gtts q2h while awake for 2 days, then q4h for 3-7 days.
- Note: Prefer Moxifloxacin due to enhanced lipophilicity and penetration into aqueous humor (1 gtt = 1 drop).
- 10.1.2 Keratitis due to dry cornea, diabetes, immunosuppression
- Preferred regimen: Cefazolin (50 mg/mL) AND (Gentamicin OR Tobramycin (14 mg/mL) q1560 min around clock for  2472 hrs, then slow reduction)
- Alternative therapy: Vancomycin (50 mg/mL) AND Ceftazidime (50 mg/mL) q1560 min around clock for 2472 hrs, then slow reduction.
- Note: Specific therapy guided by results of alginate swab culture and sensitivity. Ciprofloxacin 0.3% found clinically equivalent to CefazolinAND Tobramycin; only concern was efficacy of Ciprofloxacin vs S. pneumoniae
- 10.2 Dacryocystitis (lacrimal sac)
- Preferred regimen: Moxifloxacin 1 gtt tid for 7 days OR Cefazolin (50 mg/mL) (1 gtt = 1 drop)
- 11. Suppurative phlebitis
- Preferred regimen: Vancomycin 15 mg/kg IV q12h (normal weight)
- Alternative regimen: Daptomycin 6 mg/kg IV q12h
- Note: Retrospective study for suppurative phlebitis recommends 2-3 weeks IV therapy and 2 weeks PO therapy.
- 12.  Infected prosthetic joint
- Preferred regimen: Penicillin G 2 million units IV q4h OR Ceftriaxone 2 g IV q24h for 4 weeks
- Note: Debridement & prosthesis retention with intravenous antibiotics.
- 13.  Hot tender parotid swelling
- Preferred regimen: Nafcillin OR Oxacillin 2 g IV q4h
- Note: Predisposing factors are stone(s) in Stensens duct, dehydration. Therapy depends on ID of specific etiologic organism.
- 14. Diabetic foot ulcer (ulcer with <2 cm of superficial inflammation)
- Preferred regimen: (Trimethoprim-Sulfamethoxazole 800/160 mg 1-2 tabs PO bid OR Minocycline 100 mg PO bid) AND (Penicillin VK 500 mg PO qid OR selected  Cephalosporins 2nd, 3rd generation - cefprozil 500 mg PO bid OR cefuroxime axetil 500 mg PO bid OR cefdinir 300 mg PO bid or 600 mg PO qd OR cefpodoxime 200 mg PO bid OR Fluoroquinolones Levofloxacin 750 mg PO qd).
- 15.  Recurrent cellulitis, chronic lymphedema prophylaxis
- Preferred regimen: Clindamycin 150 mg PO qd OR Trimethoprim-Sulfamethoxazole 800/160 mg 1 tablet PO qd OR stand-by therapy immediate treatment with Penicillin V OR Amoxicillin 500-750 mg PO bd at onset of symptoms.
- Streptococcus agalactiae Return to Top
- Streptococcus agalactiae treatment (GBS-group B Streptococcus)
- 1. Early onset group B streptococcal infections
- 1.1 Bacteremia or sepsis or pneumonia
- 1.1.1 Empiric therapy
- Preferred regimen: Ampicillin 150 mg/kg IV q12h for 10 days AND Gentamicin 4 mg/kg IV q12h for 10 days-for infants born at  35 weeks gestation; Gentamicin 3 mg/kg IV q24h for 10 days-for infants born at < 35 weeks gestation
- 1.1.2 Definitive therapy
- Preferred regimen: Penicillin G 50,000-100,000 units/kg per day IV divided q12h for 10 days
- 1.2 Meningitis
- 1.2.1 Empiric therapy
- Preferred regimen: Ampicillin 100-150 mg/kg IV q8h for 14-21 days AND Gentamicin 4 mg/kg IV q24h for 14-21 days-for infants born at  35 weeks gestation; Gentamicin 3 mg/kg IV q24h for 14-21 days-for infants born at < 35 weeks gestation
- 1.2.2 Definitive therapy
- Preferred regimen: Penicillin G 250,000-450,000 units/kg per day IV divided q8h for 14-21 days
- Note: Cellulitis is the most frequent clinical manifestation of GBS-associated skin and soft tissue infections.
- 2. Late onset group b streptococcus infections in neonates and young infants (age > 1 week and body weight  1 kg with normal renal function)
- 2.1 Bacteremia without a focus
- 2.1.1 Empiric therapy
- Preferred regimen: Ampicillin IV for 10 days, Nafcillin IV for 10 days, (OR Vancomycin IV for 10 days) AND Gentamicin IV for 10 days (OR Cefotaxime IV for 10 days)
- 2.1.2 Definitive therapy
- Preferred regimen: Penicillin G 75,000-150,000 units/kg per day IV divided q8h for 10 days
- 2.2 Meningitis
- 2.2.1 Empiric therapy
- Preferred regimen: Ampicillin IV for 14-21 days with or without Vancomycin IV for 14-21 day AND Gentamicin IV for 14-21 days OR Cefotaxime IV for 14-21 day
- 2.2.2 Definitive therapy
- Preferred regimen: Penicillin G 450,000-500,000 units/kg per day IV divided q6h for 14-21 days
- 2.3 Cellulitis or adenitis
- 2.3.1 Empiric therapy
- Preferred regimen: Nafcillin IV for 10-14 days (OR [[Vancomycin IV for 10-14 days) AND Gentamicin IV for 10-14 days (OR Cefotaxime IV for 10-14 days)
- 2.3.2 Definitive therapy
- Preferred regimen: Penicillin-G 75,000-150,000 units/kg per day IV divided q8h for 10-14 days
- 2.4 Septic arthritis
- 2.4.1 Empiric therapy
- Preferred regimen: Nafcillin IV for 14-21 days OR Vancomycin IV for 14-21 days AND Cefotaxime IV for 14-21 days
- 2.4.2 Definitive therapy
- Preferred regimen: Penicillin-G 75,000-150,000 units/kg per day IV divided q8h for 14-21 days
- 2.5 Osteomyelitis
- 2.5.1 Empiric therapy
- Preferred regimen: Nafcillin IV for 21-28 days OR Vancomycin IV for 21-28 days AND Cefotaxime IV for 21-28 days
- 2.5.2 Definitive therapy
- Preferred regimen: Penicillin-G 75,000-150,000 units/kg per day IV divided q8h for 21-28 days
- 2.6 Urinary tract infection
- 2.6.1 Empiric therapy
- Preferred regimen: Ampicillin IV for 10 days, Nafcillin IV for 10 days, (OR Vancomycin IV for 10 days) AND Gentamicin IV for 10 days (OR Cefotaxime IV for 10 days)
- 2.6.2 Definitive therapy
- Preferred regimen: Penicillin-G 75,000-150,000 units/kg per day IV divided q8h for 10 days
- Neonatal prophylaxis
- Group B streptococcus infection (maternal dose for neonatal prophylaxis)
- Preferred regimen: Penicillin-G, Ampicillin 2 g IV initial dose, THEN 1 g q4h until delivery, Cefazolin  4h prior to delivery

### Bacteria  Gram-Positive Bacilli
- Actinomycosis Return to Top
- Actinomyces species including A. israeli
- Preferred regimen: Penicillin 3-4 million units IV q4h for 2-6 weeks THEN Penicillin V 2-4 g/day PO qid for 6-12 months
- Alternative regimen (1): Erythromycin 500-1000 mg IV q6h OR 500 mg PO qid
- Alternative regimen (2): Tetracyclin 500 mg PO qid
- Alternative regimen (3): Doxycycline 100 mg IV q12h OR 100 mg PO bid
- Alternative regimen (4): Clindamycin 900 mg IV q8h OR 300-450 mg PO qd
- Alternative regimen (5): Minocycline 100 mg IV q12h OR 100 mg PO bid
- Arcanobacterium haemolyticum Return to Top
- Arcanobacterium haemolyticum treatment
- Preferred regimen: Erythromycin Base: 333 mg PO q8h; estolate/stearate/base: 250-500 mg q6h PO
- Alternative regimen: Benzathine Penicillin G 1.2 MU IM q3-4 weeks

# Anthracis
- Bacillus anthracis Return to Top
- Bacillus anthracis treatment
- 1. Treatment for cutaneous anthrax, without systemic involvement
- Preferred regimen (regardless of penicillin susceptibility or if susceptibility is unknown) (1): Ciprofloxacin 500 mg PO bid for 7-10 days
- Preferred regimen (regardless of penicillin susceptibility or if susceptibility is unknown) (2): Doxycycline 100 mg PO bid for 7-10 days
- Preferred regimen (regardless of penicillin susceptibility or if susceptibility is unknown) (3): Levofloxacin 750 mg PO qd for 7-10 days
- Preferred regimen (regardless of penicillin susceptibility or if susceptibility is unknown) (4): Moxifloxacin 400 mg PO qd for 7-10 days
- Alternative regimen (1): Clindamycin 600 mg PO tid for 7-10 days
- Alternative regimen (2): Amoxicillin 1 g PO tid (for penicillin-susceptible strains) for 7-10 days
- Alternative regimen (3): Penicillin VK 500 mg PO qid (for penicillin-susceptible strains) for 7-10 days
- Note: Duration of treatment is 60 days for bioterrorism-related cases and 7-10 days for naturally acquired cases.
- 2. Treatment for systemic anthrax including anthrax meningitis, inhalational anthrax, injectional anthrax, and gastrointestinal anthrax; and cutaneous anthrax with systemic involvement, extensive edema, or lesions of the head or neck
- 2.1 Systemic anthrax with possible/confirmed meningitis
- 2.1.1 Bactericidal agent (fluoroquinolone)
- Preferred regimen (1): Ciprofloxacin 400 mg IV q8h for 2-3 weeks
- Preferred regimen (2): Levofloxacin 750 mg IV q24h for 2-3 weeks
- Preferred regimen (3): Moxifloxacin 400 mg IV q24h for 2-3 weeks AND
- 2.1.2 Bactericidal agent (-lactam) for all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen (1): Meropenem 2 g IV q8h for 2-3 weeks
- Preferred regimen (2): Imipenem 1 g IV q6h for 2-3 weeks
- Preferred regimen (3): Doripenem 500 mg IV q8h for 2-3 weeks
- Preferred regimen (4): Penicillin G 4 MU IV q4h (for penicillin-susceptible strains) for 2-3 weeks
- Preferred regimen (5): Ampicillin 3 g IV q6h (for penicillin-susceptible strains) for 2-3 weeks AND
- 2.1.3 Protein synthesis inhibitor
- Preferred regimen (1): Linezolid 600 mg IV q12h for 2-3 weeks
- Preferred regimen (2): Clindamycin 900 mg IV q8h for 2-3 weeks
- Preferred regimen (3): Rifampin 600 mg IV q12h for 2-3 weeks
- Preferred regimen (4): Chloramphenicol 1 g IV q6-8h for 2-3 weeks
- Note (1): Patients exposed to aerosolized spores will require prophylaxis to complete an antimicrobial drug course of 60 days from onset of illness.
- Note (2): Increased risk for seizures associated with Imipenem/Cilastatin treatment.
- Note (3): Linezolid should be used with caution in patients with thrombocytopenia because it might exacerbate it. Linezolid use for > 14 days has additional hematopoietic toxicity.
- Note (4): Rifampin is not a protein synthesis inhibitor. However, it may be used in combination with other antimicrobial drugs on the basis of its in vitro synergy.
- 2.2 Systemic anthrax when meningitis has been excluded
- 2.2.1 Bactericidal agent
- Preferred regimen (1): Ciprofloxacin 400 mg IV q8h for 2 weeks
- Preferred regimen (2): Levofloxacin 750 mg IV q24h for 2 weeks
- Preferred regimen (3): Moxifloxacin 400 mg q24h for 2 weeks
- Preferred regimen (4): Meropenem 2 g IV q8h for 2 weeks
- Preferred regimen (5): Imipenem 1 g IV q6h for 2 weeks
- Preferred regimen (6): Doripenem 500 mg IV q8h for 2 weeks
- Preferred regimen (7): Vancomycin 20 mg/kg IV q8h (maintain serum trough concentrations of 15-20 g/mL) for 2 weeks
- Preferred regimen (8): Penicillin G 4 MU IV q4h (penicillin-susceptible strains) for 2 weeks
- Preferred regimen (9): Ampicillin 3 g IV q6h (penicillin-susceptible strains) for 2 weeks AND
- 2.2.2 Protein synthesis inhibitor
- Preferred regimen (1): Clindamycin 900 mg IV q8h for 2 weeks
- Preferred regimen (2): Linezolid 600 mg IV q12h for 2 weeks
- Preferred regimen (3): Doxycycline 200 mg IV initially, then 100 mg IV q12h for 2 weeks
- Preferred regimen (4): Rifampin 600 mg IV q12h for 2 weeks
- Note: Patients exposed to aerosolized spores will require prophylaxis to complete an antimicrobial drug course of 60 days from onset of illness.
- 3. Specific considerations
- 3.1 Treatment of anthrax for pregnant Women
- 3.1.1 Intravenous antimicrobial treatment for systemic anthrax with possible/confirmed meningitis 
- 3.1.1.1  A Bactericidal Agent (Fluoroquinolone)
- Preferred regimen (1): Ciprofloxacin 400 mg IV q8h for 23 weeks OR
- Preferred regimen (2): Levofloxacin 750 mg IV q24h for 23 weeksOR
- 3.1.1.2  A Bactericidal Agent (-lactam)
- 3.1.1.2.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen: Meropenem 2 g q8h for 23 weeks
- 3.1.1.2.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1): Ampicillin 3 g IV q6h for 23 weeks
- Alternative regimen (2): Penicillin G 4 MU IV q4h for 23 weeks OR
- 3.1.1.3  A Protein Synthesis Inhibitor
- Preferred regimen (1): Clindamycin 900 IV mg q8h for 23 weeks
- Preferred regimen (2): Rifampin 600 IV mg q12h for 23 weeks
- Note: At least one antibiotic with transplacental passage is recommended.
- 3.1.2 Intravenous antimicrobial treatment for systemic anthrax when meningitis has been excluded
- 3.1.2.1  A Bactericidal Antimicrobial
- Preferred regimen (1): Ciprofloxacin 400 mg IV q8h for 2 weeks
- Preferred regimen (2): Levofloxacin 750 mg IV q24h for 2 weeks OR
- 3.1.2.2  A Bactericidal Agent (-lactam)
- 3.1.2.2.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen: Meropenem 2 g q8h for 2 weeks  OR
- 3.1.2.2.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1): Ampicillin 3 g IV q6h for 2 weeks
- Alternative regimen (2): Penicillin G 4 MU IV q4h for 2 weeks OR
- 3.1.2.3  A Protein Synthesis Inhibitor
- Preferred regimen (1): Clindamycin 900 IV mg q8h for 2 weeks
- Preferred regimen (2): Rifampin 600 IV mg q12h for 2 weeks
- 3.1.3 Oral antimicrobial treatment for cutaneous anthrax without systemic involvement
- 3.1.3.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen: Ciprofloxacin 400 mg IV q8h
- Note: Duration of treatment is 60 days
- 3.2 Treatment for anthrax in childern 
- 3.2.1 Treatment of cutaneous anthrax without systemic involvement (for children 1 month of age and older)
- 3.2.1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day PO bid (not to exceed 500 mg/dose) for 7-10 days
- Preferred regimen (2):
- If patients body weight is < 45 kg: Doxycycline 4.4 mg/kg/day PO bid (not to exceed  100 mg/dose) for 7-10 days
- If patients body weight is = 45 kg: Doxycycline 100 mg/dose PO bid for 7-10 days
- Preferred regimen (3): Clindamycin 30 mg/kg/day PO tid (not to exceed  600 mg/dose) for 7-10 days
- Preferred regimen (4):
- If patients body weight is < 50 kg: Levofloxacin 16 mg/kg/day PO bid (not to exceed  250 mg/dose) for 7-10 days
- If patients body weight is > 50 kg: Levofloxacin 500 mg PO qd for 7-10 days
- 3.2.1.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1):Amoxicillin 75 mg/kg/day PO tid (not to exceed 1 g/dose) for 7-10 days
- Alternative regimen (2): Penicillin VK 50-75 mg/kg/day PO tid or qid for 7-10 days
- 3.2.2  Combination therapy for systemic anthrax when meningitis can be ruled out (for children 1 month of age and older)
- 3.2.2.1 A bactericidal antimicrobial
- 3.2.2.1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q8h (not to exceed 400 mg/dose) for 14 days
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h (not to exceed 2 g/dose) for 14 days
- Preferred regimen (3):
- If patients body weight is < 50 kg: Levofloxacin 20 mg/kg/day IV divided q12h (not to exceed 250 mg/dose) for 14 days
- If patients body weight is > 50 kg: Levofloxacin 500 mg IV q24h for 14 days
- Preferred regimen (4): Imipenem/Cilastatin 100 mg/kg/day IV divided q6h (not to exceed 1 g/dose) for 14 days
- Preferred regimen (5): Vancomycin 60 mg/kg/day IV divided q8h (follow serum concentrations) for 14 days
- 3.2.2.1.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1): Penicillin G 400 000 U/kg/day IV divided q4h (not to exceed 4 MU/dose) for 14 days
- Alternative regimen (2): Ampicillin 200 mg/kg/day IV divided q6h (not to exceed 3 g/dose) for 14 days AND
- 3.2.2.2 A Protein Synthesis Inhibitor
- Preferred regimen (1): Clindamycin, 40 mg/kg/day IV divided q8h (not to exceed 900 mg/dose) for 14 days
- Preferred regimen (2):  (non-CNS infection dose)
- If patient is < 12 y old: Linezolid 30 mg/kg/day IV divided q8h for 14 days
- If patient is = 12 y old: Linezolid 30 mg/kg/day IV divided q12h (not to exceed 600 mg/dose) for 14 days
- Preferred regimen (3):
- If patients body weight is < 45 kg: Doxycycline 4.4 mg/kg/day IV loading dose (not to exceed 200 mg) THEN Doxycycline 4.4 mg/kg/day IV divided q12h  (not to exceed 100 mg/dose) for 14 days
- If patients body weight is =45 kg: Doxycycline 200 mg IV loading dose THEN Doxycycline 100 mg IV given q12h for 14 days
- Preferred regimen (4): Rifampin 20 mg/kg/day IV divided q12h (not to exceed 300 mg/dose) for 14 days
- Note: Duration of therapy for 14 days or longer until clinical criteria for stability are met. Will require prophylaxis to complete an antimicrobial course of up to 60 days from onset of illness.
- 3.2.3 Triple therapy for systemic anthrax (anthrax meningitis or disseminated infection and meningitis cannot be ruled out) for Children 1 Month of Age and Older
- 3.2.3.1 A bactericidal antimicrobial (fluoroquinolone)
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q8h (not to exceed 400 mg/dose) for 23 wks
- Preferred regimen (2):
- If patients body weight is < 50 kg: Levofloxacin 16 mg/kg/day IV divided q12h (not to exceed 250 mg/dose) for 23 wks
- If patients body weight is > 50 kg: Levofloxacin 500 mg IV q24h for 23 wks
- Preferred regimen (3):
- If patients age is 3 months to < 2 years: Moxifloxacin  12 mg/kg/day IV, divided q12h (not to exceed 200 mg/dose) for 23 wks
- If patients age is 2-5 years: Moxifloxacin 10 mg/kg/day IV divided q1h (not to exceed 200 mg/dose) for 23 wks
- If patients age is 611 years: Moxifloxacin 8 mg/kg/day IV divided q12h (not to exceed 200 mg/dose) for 23 wks
- If patients age is 1217 years, = 45 kg body weight: Moxifloxacin 400 mg IV q24h for 23 wks
- If patients age is 1217 years, < 45 kg body weight: Moxifloxacin 8 mg/kg/day IV divided q12h (not to exceed 200 mg/dose) for 23 wks AND
- 3.2.3.2 A bactericidal antimicrobial (-lactam or glycopeptide)
- 3.2.3.2.1 For all strains, regardless of penicillin susceptibility testing or if susceptibility is unknown:
- Preferred regimen (1): Meropenem 120 mg/kg/day IV divided q8h (not to exceed 2 g/dose) for 23 wks
- Preferred regimen (2): Imipenem/Cilastatin 100 mg/kg/day IV divided q6h (not to exceed 1 g/dose) for 23 wks
- Preferred regimen (3): Doripenem 120 mg/kg/day IV divided q8h (not to exceed 1 g/dose) for 23 wks
- Preferred regimen (4): Vancomycin 60 mg/kg/day IV divided q8h for 23 wks
- 3.2.3.2.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1): Penicillin G 400 000 U/kg/day IV divided q4h (not to exceed 4 MU/dose) for 23 wks
- Alternative regimen (2): Ampicillin 400 mg/kg/day IV divided q6h (not to exceed 3 g/dose) for 23 wks AND
- 3.2.3.3 A Protein Synthesis Inhibitor
- Preferred regimen (1):
- If patients age is < 12 y old: Linezolid 30 mg/kg/day IV divided q8h for 23 wk
- If patients age is = 12 y old: Linezolid 30 mg/kg/day,IV divided q12h (not to exceed 600 mg/dose) for 23 wk
- Preferred regimen (2): Clindamycin 40 mg/kg/day IV divided q8h (not to exceed 900 mg/dose)  for 23 wk
- Preferred regimen (3): Rifampin 20 mg/kg/day IV divided q12h (not to exceed 300 mg/dose) for 23 wk
- Preferred regimen (4): Chloramphenicol 100 mg/kg/day IV divided q6h for 23 wk
- 3.2.4 Oral follow-up combination therapy for severe anthrax (for Children 1 Month of Age and Older)
- 3.2.4.1 A bactericidal antimicrobial
- 3.2.4.1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day PO bid (not to exceed 500 mg/dose)
- Preferred regimen (2):
- If patients body weight is < 50 kg: Levofloxacin 16 mg/kg/day PO bid (not to exceed 250 mg/dose)
- If patients body weight is = 50 kg: Levofloxacin 500 mg PO qd
- 3.2.4.1.2 Alternatives for penicillin-susceptible strains
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO tid (not to exceed 1 g/dose)
- Alternative regimen (2): Penicillin VK 5075 mg/kg/day PO tid or qds AND
- 3.2.4.2 A protein synthesis inhibitor:
- Preferred regimen (1):Clindamycin 30 mg/kg/day PO tid (not to exceed 600 mg/dose)
- Preferred regimen (2):
- If the patients body weight is < 45 kg: Doxycycline 4.4 mg/kg/day PO bid (not exceed 100 mg/dose)
- If the patients body weight is = 45 kg: Doxycycline 100 mg PO bid
- Preferred regimen (3): (non-CNS infection dose):
- If the patients age is < 12 yrs old: Linezolid 30 mg/kg/day PO tid
- If the patients age is = 12 yrs old: Linezolid 30 mg/kg/day PO bid (not to exceed 600 mg/dose)
- Note: Duration of therapy to complete a treatment course of 14 days or greater. May require prophylaxis to complete an antimicrobial course of up to 60 days from onset of illness.
- 3.2.5  Dosing in preterm and term neonates 32 to 44 Weeks postmenstrual Age (Gestational Age Plus Chronologic Age)
- 3.2.5.1 Triple therapy for severe anthrax(anthrax meningitis or disseminated infection and meningitis cannot be ruled out)
- 3.2.5.1.1 Bactericidal antimicrobial (fluoroquinolone) therapy
- 3.2.5.1.1.1 For 3234 weeks gestational age
- For 01 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Moxifloxacin 5 mg/kg/day IV q24h for 23 weeks
- For 14 weeks of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Moxifloxacin 5 mg/kg/day IV q24h for 23 weeks
- 3.2.5.1.1.2 For 3437 week gestational age
- For 01 wk of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2):Moxifloxacin 5 mg/kg/day IV q24h for 23 weeks
- For 14 wk of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Moxifloxacin 5 mg/kg/day IV q24h for 23 weeks
- 3.2.5.1.1.3 Term newborn infant
- For 01 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Moxifloxacin 10 mg/kg/day IV q24h for 23 weeks
- For 14 weeks of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Moxifloxacin 10 mg/kg/day IV q24h for 23 weeks AND
- 3.2.5.1.2 A bactericidal antimicrobial (-lactam)
- 3.2.5.1.2.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown:
- 3.2.5.1.2.1.1 For 3234 weeks gestational age
- For 01 week of Age :
- Preferred regimen (1): Meropenem 60 mg/kg/day  IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 50 mg/kg/day  IV divided q12h for 23 weeks
- Preferred regimen (3): Doripenem 20 mg/kg/day  IV divided q12h for 23 weeks
- For 14 wk of Age :
- Preferred regimen (1): Meropenem 90 mg/kg/day  IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 75 mg/kg/day  IV divided q8h for 23 weeks
- Preferred regimen (3): Doripenem 30 mg/kg/day  IV divided q8h for 23 weeks
- 3.2.5.1.2.1.2 For 3437 week gestational age
- For 01 week of Age :
- Preferred regimen (1): Meropenem 60 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 50 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (3): Doripenem  20 mg/kg/day IV divided q12h for 23 weeks
- For 14 week of Age :
- Preferred regimen (1): Meropenem 90 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 75 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (3): Doripenem 30 mg/kg/day IV divided q8h for 23 weeks
- 3.2.5.1.2.1.3 Term newborn infant
- For < 1 week of age
- Preferred regimen (1): Meropenem 60 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 50 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (3): Doripenem 20 mg/kg/day IV divided q12h for 23 weeks
- For 14 week of age
- Preferred regimen (1): Meropenem 90 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Imipenem 75 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (3): Doripenem 30 mg/kg/day IV divided q8h for 23 weeks
- 3.2.5.1.2.2  Alternatives for penicillin-susceptible strains
- 3.2.5.1.2.2.1 For 3234 weeks gestational age
- For 01 week of age
- Alternative regimen (1): Penicillin G 200000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 100 mg/kg/day IV divided q12h for 23 weeks
- For 14 week of age :
- Alternative regimen (1): Penicillin G 300000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day divided IV q12h for 23 weeks
- 3.2.5.1.2.2.2 For 3437 week gestational age
- For < 1 week of age
- Alternative regimen (1): Penicillin G 300000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day IV divided q12h for 23 weeks
- For 14 week of age
- Alternative regimen (1): Penicillin G 400000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 200 mg/kg/day IV divided q12h for 23 weeks
- 3.2.5.1.2.2.3 Term newborn infant
- For 01 week of age
- Alternative regimen (1): Penicillin G 300000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day IV divided q12h for 23 weeks
- For 14 week of age
- Alternative regimen (1): Penicillin G 400000 Units/kg/day IV divided q12h for 23 weeks
- Alternative regimen (2): Ampicillin 200 mg/kg/day IV divided q12h for 23 weeks AND
- 3.2.5.1.3 A protein synthesis inhibitor
- 3.2.5.1.3.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen (1): Linezolid 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (2): Clindamycin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 25 mg/kg/day IV q24h for 23 weeks
- For 14 week of age
- Preferred regimen (1): Linezolid 30 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Clindamycin 15 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 50 mg/kg/day IV q12h for 23 weeks
- 3.2.5.1.3.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen (1): Linezolid 30 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Clindamycin 15 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 25 mg/kg/day IV q24h for 23 weeks
- For 14 week of age
- Preferred regimen (1): Linezolid 30 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Clindamycin 20 mg/kg/day IV divided q6h for 23 weeks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 50 mg/kg/day IV q12h for 23 weeks
- 3.2.5.1.3.3 Term newborn infant
- For < 1 week of age
- Preferred regimen (1): Linezolid 30 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Clindamycin 15 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 25 mg/kg/day IV q24h for 23 weeks
- For 14 week of age
- Preferred regimen (1): Linezolid 30 mg/kg/day IV divided q8h for 23 weeks
- Preferred regimen (2): Clindamycin 20 mg/kg/day IV divided q6h for 23 weeks
- Preferred regimen (3): Rifampin 20 mg/kg/day IV divided q12h for 23 weeks
- Preferred regimen (4): Chloramphenicol 50 mg/kg/day IV q12h for 23 weeks
- Note :Duration of therapy for 23 weeks, until clinical criteria for stability are met. Will require prophylaxis to complete an antibiotic course of upto 60 days from onset of illness.
- 3.2.5.2 Therapy for severe anthrax when meningitis can be ruled out
- 3.2.5.2.1 A bactericidal antimicrobial
- 3.2.5.2.1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- 3.2.5.2.1.1.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 40 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 40 mg/kg/day IV divided q12h for 2-3 weeks
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 50 mg/kg/day IV divided q12h for 2-3 weeks
- 3.2.5.2.1.1.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 50 mg/kg/day IV divided q12h for 2-3 weeks
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 75 mg/kg/day IV divided q8h for 2-3 weeks
- 3.2.5.2.1.1.3 Term Newborn Infant
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 50 mg/kg/day IV divided q12h for 2-3 weeks
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day IV divided q12h for 2-3 weeks
- Preferred regimen (2): Meropenem 60 mg/kg/day IV divided q8h for 2-3 weeks
- Preferred regimen (3): Imipenem 75 mg/kg/day IV divided q8h for 2-3 weeks
- Vancomycin IV (dosing based on serum creatinine for infants of 32 wk gestational age). Follow vancomycin serum concentrations to modify dose.
- If  Serum creatinine < 0.7 then Vancomycin 15 mg/kg/dose IV q12h for 2-3 weeks
- If Serum creatinine 0.7 -0.9 then Vancomycin 20 mg/kg/dose IV q24h for 2-3 weeks
- If Serum creatinine 11.2 then Vancomycin 15 mg/kg/dose IV q24h for 2-3 weeks
- If Serum creatinine 1.31.6 then Vancomycin 10 mg/kg/dose IV q24h for 2-3 weeks
- If Serum creatinine > 1.6 then Vancomycin mg/kg/dose IV q48h for 2-3 weeks
- Note: Begin treatment with a 20 mg/kg loading dose OR
- 3.2.5.2.1.2 Alternatives for penicillin-susceptible strains
- 3.2.5.2.1.2.1 For 3234 weeks gestational age
- For < 1 week of age
- Alternative regimen (1): Penicillin G 200000 U/kg/day IV divided q12h for 2-3 weeks
- Alternative regimen (2): Ampicillin 100 mg/kg/day IV divided q12h for 2-3 weeks
- For 14 week of age
- Alternative regimen (1): Penicillin G 300000 U/kg/day IV divided q8h for 2-3 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day IV divided q8h for 2-3 weeks
- 3.2.5.2.1.2.2 For 3437 week gestational age
- For < 1 week of age
- Alternative regimen (1): Penicillin G 300000 U/kg/day IV divided q8h for 2-3 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day IV divided q8h for 2-3 weeks
- For 14 week of age
- Alternative regimen (1): Penicillin G 400000 U/kg/day IV divided q6h for 2-3 weeks
- Alternative regimen (2): Ampicillin 200 mg/kg/day IV divided q6h for 2-3 weeks
- 3.2.5.2.1.2.3 Term newborn infant
- For < 1 week of age
- Alternative regimen (1): Penicillin G 300000 U/kg/day IV divided q8h for 2-3 weeks
- Alternative regimen (2): Ampicillin 150 mg/kg/day IV divided q8h for 2-3 weeks
- For 14 week of age
- Alternative regimen (1): Penicillin G 400000 U/kg/day IV divided q6h for 2-3 weeks
- Alternative regimen (2):Ampicillin 200 mg/kg/day IV divided q6h for 2-3 weeks
- 3.2.5.2.2 A protein synthesis inhibitor
- 3.2.5.2.2.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen (1): Clindamycin 10 mg/kg/day IV divided q12h for 23 wks
- Preferred regimen (2): Linezolid 20 mg/kg/day IV divided q12h for 23 wks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV q24h for 23 wks
- For 14 week of age
- Preferred regimen (1): Clindamycin 15 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (2): Linezolid 30 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV q24h for 23 wks
- 3.2.5.2.2.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen (1): Clindamycin  15 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (2): Linezolid 30 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV q24h for 23 wks
- For 14 week of age
- Preferred regimen (1): Clindamycin 20 mg/kg/day IV divided q6h for 23 wks
- Preferred regimen (2): Linezolid 30 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (3): Rifampin 10 mg/kg/day IV q24h for 23 wks
- 3.2.5.2.2.3 Term newborn infant
- For 01 week of age :
- Preferred regimen (1): Clindamycin 15 mg/kg/day  IV divided q8h for 23 wks
- Preferred regimen (2): Linezolid 30 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (3): Doxycycline 4.4 mg/kg/day IV divided q12h, (loading dose 4.4 mg/kg) for 23 wks
- Preferred regimen (4): Rifampin 10 mg/kg/day IV q24h for 23 wks
- For 14 week of age :
- Preferred regimen (1): Clindamycin 20 mg/kg/day IV divided q6h for 23 wks
- Preferred regimen (2): Linezolid 30 mg/kg/day IV divided q8h for 23 wks
- Preferred regimen (3): Doxycycline 4.4 mg/kg/day IV divided q12h, (loading dose 4.4 mg/kg) for 23 wks
- Preferred regimen (4): Rifampin 10 mg/kg/day IV q24h for 23 wks
- Note: Duration of therapy for 23 wks, until clinical criteria for stability are met (see text). Will require prophylaxis to complete an antimicrobial course of upto 60 days from onset of illness
- 3.2.5.3 Oral follow-up combination therapy for severe anthrax
- 3.2.5.3.1 A bactericidal antimicrobial
- 3.2.5.3.1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- 3.2.5.3.1.1.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen: Ciprofloxacin 20 mg/kg/day PO bid
- For 14 week of age
- Preferred regimen: Ciprofloxacin 20 mg/kg/day PO bid
- 3.2.5.3.1.1.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen: Ciprofloxacin 20 mg/kg/day PO bid
- For 14 week of age
- Preferred regimen: Ciprofloxacin 20 mg/kg/day PO bid
- 3.2.5.3.1.1.3 Term newborn infant
- For < 1 week of age
- Preferred regimen: Ciprofloxacin 30 mg/kg/day PO bid
- For 14 week of age
- Preferred regimen: Ciprofloxacin 30 mg/kg/day PO bid OR
- 3.2.5.3.1.2 Alternatives for penicillin-susceptible strains
- 3.2.5.3.1.2.1 For 3234 weeks gestational age
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day PO bid
- Alternative regimen (2): Penicillin VK  50 mg/kg/day PO bid
- For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO bid
- Alternative  regimen (2): Penicillin VK 75 mg/kg/day PO bid
- 3.2.5.3.1.2.2 For 3437 week gestational age
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day PO bid
- Alternative regimen (2): Penicillin VK 50 mg/kg/day PO bid
- For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO bid
- Alternative regimen (2): Penicillin VK 75 mg/kg/day PO tid
- 3.2.5.3.1.2.3 Term newborn infant
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO tid
- Alternative regimen (2): Penicillin VK 75 mg/kg/day PO tid
- For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO tid
- Alternative regimen (2): Penicillin VK 75 mg/kg/day PO tid or qid
- 3.2.5.3.2 A protein synthesis inhibitor
- 3.2.5.3.2.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen (1): Clindamycin 10 mg/kg/day PO bid
- Preferred regimen (2): Linezolid 20 mg/kg/day PO bid
- For 14 week of age
- Preferred regimen (1): Clindamycin 15 mg/kg/day PO bid
- Preferred regimen (2): Linezolid 30 mg/kg/day PO bid
- 3.2.5.3.2.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen (1): Clindamycin 15 mg/kg/day PO tid
- Preferred regimen (2): Linezolid 30 mg/kg/day PO tid
- For 14 week of age
- Preferred regimen (1): Clindamycin 20 mg/kg/day PO qid
- Preferred regimen (2): Linezolid 30 mg/kg/day PO tid
- 3.2.5.3.2.3 Term newborn infant
- For < 1 week of age
- Preferred regimen (1): Clindamycin 15 mg/kg/day PO tid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day PO bid (loading dose 4.4 mg/kg)
- Preferred regimen (3): Linezolid 30 mg/kg/day PO tid
- For 14 week of age
- Preferred regimen (1): Clindamycin 20 mg/kg/day PO qid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day PO bid (loading dose 4.4 mg/kg)
- Preferred regimen (3): Linezolid 30 mg/kg/day PO tid
- Note: Duration of therapy to complete a treatment course of 1014 days or greater. May require prophylaxis to complete an antimicrobial course of upto 60 days from onset of illness.
- 3.2.5.4 Treatment of cutaneous anthrax without systemic involvement
- 3.2.5.4.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- 3.2.5.4.1.1 For 3234 weeks gestational age
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day PO bid
- Preferred regimen (2): Clindamycin 10 mg/kg/day PO bid
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day PO bid
- Preferred regimen (2): Clindamycin 15 mg/kg/day PO tid
- 3.2.5.4.1.2 For 3437 week gestational age
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day PO bid
- Preferred regimen (2): Clindamycin 15 mg/kg/day PO tid
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day PO bid
- Preferred regimen (2): Clindamycin 20 mg/kg/day PO qid
- 3.2.5.4.1.3 Term newborn infant
- For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day PO bid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day PO bid (Loading dose 4.4 mg/kg)
- Preferred regimen (3): Clindamycin 15 mg/kg/day PO tid
- For 14 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day PO bid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day PO bid (Loading dose 4.4 mg/kg)
- Preferred regimen (3): Clindamycin 20 mg/kg/day PO qid
- 3.2.5.4.2 Alternatives for penicillin-susceptible strains
- 3.2.5.4.2.1 For 3234 weeks gestational age
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day PO bid
- Alternative regimen (2): Penicillin Vk 50 mg/kg/day PO bid
- For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day PO tid
- 3.2.5.4.2.2 For 3437 week gestational age
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day PO bid
- Alternative regimen (2): Penicillin Vk 50 mg/kg/day PO bid
- For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO bid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day PO bid
- 3.2.5.4.2.3 Term newborn infant
- For < 1 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day PO tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day PO tid
- For 14 week of age
- Alternative regimen (1): Amoxicillin  75 mg/kg/day PO tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day PO tid or qid
- Note : Duration of therapy for naturally acquired infection is 710 days and for a biological weaponrelated event,may require additional prophylaxis for inhaled spores to complete an antimicrobial course of up to 60 days from onset of illness.
- Bacillus anthracis, postexposure prophylaxis
- 1. For adults
- 1.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- Preferred regimen (1): Ciprofloxacin 500 mg IV q12h
- Preferred regimen (2): Doxycycline 100 mg IV q12h
- Preferred regimen (3): Levofloxacin 750 mg IV q24h
- Preferred regimen (4): Moxifloxacin 400 mg IV q24h
- Preferred regimen (5): Clindamycin 600 mg IV q8h
- 1.2 Alternatives for penicillin-susceptible strain
- Preferred regimen (1): Amoxicillin 1 g IV q8h
- Preferred regimen (2): Penicillin VK 500 mg IV q6h
- 2. For children = 1 month
- 2.1 For penicillin-resistant strains or prior to susceptibility testing
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day, PO, bid (not to exceed 500 mg/dose)
- Preferred regimen (2):
- If patients body weight < 45 kg: Doxycycline 4.4 mg/kg/day, PO, bid (not to exceed 100 mg/dose)
- If patients body weight > 45 kg: Doxycycline 100 mg/dose, PO, bid
- Preferred regimen (3): Clindamycin 30 mg/kg/day, PO, tid (not to exceed 900 mg/dose)
- Preferred regimen (4):
- If patients body weight < 50 kg: Levofloxacin 16 mg/kg/day, PO, bid (not to exceed 250 mg/dose)
- If patients body weight > 50 kg: Levofloxacin 500 mg, PO, qd
- 2.2 For penicillin-susceptible strains
- Preferred regimen (1): Amoxicillin 75 mg/kg/day, PO, tid (not to exceed 1 g/dose)
- Preferred regimen (2): Penicillin VK 50-75 mg/kg/day, PO, id or tid
- Note: Duration of Therapy is 60 days after exposure
- 3. For children < 1 month
- 3.1 For all strains, regardless of penicillin susceptibility or if susceptibility is unknown
- 3.1.1 For 3234 weeks gestational age
- 3.1.1.1 For < 1 week of Age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day, PO, bid
- Preferred regimen (2): Clindamycin 10 mg/kg/day, PO, bid
- 3.1.1.2 For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day, PO,bid
- Preferred regimen (2): Clindamycin 15 mg/kg/day, PO, tid
- 3.1.2 For 3437 week gestational age
- 3.1.2.1 For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day, PO, bid
- Preferred regimen (2): Clindamycin 15 mg/kg/day, PO, tid
- 3.1.2.2 For 14 week of age
- Preferred regimen (1): Ciprofloxacin 20 mg/kg/day, PO, bid
- Preferred regimen (2): Clindamycin 20 mg/kg/day, PO, id
- 3.1.3 Term newborn infant
- 3.1.3.1 For < 1 week of age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day, PO, bid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day, PO, bid (Loading dose 4.4 mg/kg)
- Preferred regimen (3): Clindamycin 15 mg/kg/day, PO, tid
- 3.1.3.2 For 14 week of Age
- Preferred regimen (1): Ciprofloxacin 30 mg/kg/day, PO, bid
- Preferred regimen (2): Doxycycline 4.4 mg/kg/day, PO, bid (Loading dose 4.4 mg/kg)
- Preferred regimen (3): Clindamycin 20 mg/kg/day, PO, qid
- 3.2 Alternatives for penicillin-susceptible strains
- 3.2.1 For 3234 weeks gestational age
- 3.2.1.1 For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day, PO, bid
- Alternative regimen (2): Penicillin Vk  50 mg/kg/day, PO, bid
- 3.2.1.2 For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day, PO, tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day, PO, tid
- 3.2.2 For 3437 week gestational age
- 3.2.2.1 For < 1 week of age
- Alternative regimen (1): Amoxicillin 50 mg/kg/day, PO, bid
- Alternative regimen (2): Penicillin Vk 50 mg/kg/day, PO, bid
- 3.2.2.2 For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day, PO, tid
- Alternative regimen (2): Penicillin Vk  75 mg/kg/day, PO, tid
- 3.2.3 Term newborn infant
- 3.2.3.1 For < 1 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day, PO, tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day, PO, tid
- 3.2.3.2 For 14 week of age
- Alternative regimen (1): Amoxicillin 75 mg/kg/day, PO, tid
- Alternative regimen (2): Penicillin Vk 75 mg/kg/day, PO, id or tid
- Note: Duration of therapy is  60 days from exposure
- Bacillus cereus Return to Top
- 1. Food poisoning
- Preferred regimen: Food poisoning is usually self-limited and requires no antibiotic therapy.
- 2. Bacteremia
- Preferred regimen: Vancomycin 15 mg/kg IV q12h
- Alternative regimen: Clindamycin 600 mg IV q8h
- Note (1): Bacillus cereus is commonly resistant to beta-lactams.
- Note (2): Pseudobacteremia is transient and usually results from contaminated blood cultures, gloves, or syringes.
- 3. Meningitis or brain abscess
- Preferred regimen: Vancomycin 15 mg/kg IV q12h
- Alternative regimen: Clindamycin 600 mg IV q8h
- Note: Blood culture isolates are mostly contaminates until proven otherwise, especially in intravenous drug user population.
- 4. Endophthalmitis
- Preferred regimen: Clindamycin 450 g intravitreal AND Gentamicin 400 g intravitreal OR Dexamethasone intravitreal AND Vancomycin 15 mg/kg IV q12h
- Alternative regimen: Clindamycin 600 mg IV q8h
- Note: Ophthalmological consultation, culture ocular fluids, early vitrectomy, and intravitreal antibiotics are necessary.
- 5. Endocarditis
- Preferred regimen: Vancomycin 15 mg/kg IV q12h
- Note: Most blood cultures in intravenous drug users are contaminates or represent transient bacteremia.
- 6.  Soft tissue infection
- Preferred regimen: Vancomycin 15 mg/kg IV q12h
- Alternative regimen: Clindamycin 600 mg IV q8h
- 7. Pneumonia
- Preferred regimen: Vancomycin 15 mg/kg IV q12h
- Alternative regimen: Clindamycin 600 mg IV q8h
- Bacillus subtilis Return to Top
- Bacillus subtilis infection treatment
- 1. Food poisoning
- Preferred regimen: supportive treatment
- 2. Other infections
- Preferred regimen: Vancomycin OR Clindamycin
- Alternative regimen: Ciprofloxacin OR Imipenem
- Note: Distinguish clinically significant infection from contamination before administering antibiotics.
- Clostridium botulinum Return to Top
- Botulism
- 1.Foodborne botulism
- 1.1 Adult
- Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
- 1.2 Children
- 1.2.1 Children < 1 year
- Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (10% of adult dose regardless of body weight)
- 1.2.1 Children  1-17 years
- Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (20  100% of adult dose)
- Note:Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas.  A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
- 2. Infant botulism
- Preferred regimen:  BabyBIG, Botulism Immune Globulin Intravenous (Human) (BIG-IV) is  for the treatment of patients below one year of age.The recommended total dosage  is 1mL/kg (50mg/kg), given as a single IV infusion as soon as the clinical diagnosis of infant botulism is made
- Note: infant with botulism must receive supportive care during their recovery. This includes ensuring proper nutrition,keeping the airway clear,watching for respiratory failure and if it develops,ventilator  may be needed.
- 3. Wound botulism
- 3.1 Adult
- Preferred regimen (adult): Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.5 mL/min; incremental infusion rate if tolerated (every 30 minutes): double the rate; maximum infusion rate: 2 mL/min
- 3.2 Children
- 3.2.1 Children < 1 year
- Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (10% of adult dose regardless of body weight)
- 3.2.2 Children  1-17 years
- Preferred regimen: Heptavalent botulism antitoxin IV starting infusion rate (first 30 minutes): 0.01  mL/kg/min; incremental infusion rate if tolerated (every 30 minutes): 0.01  mL/kg/min ; maximum infusion rate: 0.03  mL/kg/min (20  100% of adult dose)
- Note (1): Physicians may try to remove contaminated food still in the gut by inducing vomiting or by using enemas.  A patient with severe botulism may require a ventilator as well as intensive medical and nursing care for several months.
- Note (2): For wound botulism, antibiotics are used in addition to appropriate debridement.
- Note (3): Antibiotic therapy is recommended for wound botulism after antitoxin has been administered.  Penicillin G 3 MU IV q4h in adults is frequently used. Metronidazole 500 mg IV q8h may be used as an alternative for penicillin-allergic patients.
- Clostridium perfringens Return to Top
- Clostridium perfringens 
- Gas gangrene
- Preferred regimen: Penicillin G 3-4 million units IV q4h AND (Clindamycin 900 mg IV q8h OR Tetracycline 500 mg IV q6h)
- Clostridium tetani Return to Top
- 1. General measures
- Preferred regimen: Patients should be placed in a quiet shaded area and protected from tactile and auditory stimulation as much as possible; All wounds should be cleaned and debrided as indicated
- 2. Immunotherapy
- Preferred regimen: Human TIG 500 units IV/IM as soon as possible AND Age-appropriate TT-containing vaccine, 0.5 cc IM at a separate site
- Note: patients without a history of primary TT vaccination should receive a second dose 12 months after the first dose and a third dose 612 months later
- 3. Antibiotic treatment
- Preferred regimen: Metronidazole 500 mg IV/PO q6h OR Penicillin G 100,000200,000 IU/kg/day IV, administered in 24 divided doses
- Alternative regimen: Tetracyclines OR Macrolides OR Clindamycin OR Cephalosporins OR Chloramphenicol
- 4. Muscle spasm control
- Preferred regimen: Diazepam 5 mg IV OR Lorazepam 2 mg IV titrating to achieve spasm control without excessive sedation and hypoventilation
- Alternative regimen (1): Magnesium sulphate 5 g (or 75mg/kg) IV loading dose, then 23 g per hour until spasm control is achieved  Benzodiazepines
- Note: Monitor patellar reflex as areflexia (absence of patellar reflex) occurs at the upper end of the therapeutic range (4mmol/L). If areflexia develops, dose should be decreased
- Alternative regimen (2): Baclofen OR Dantrolene 12 mg/kg IV/PO q4h
- Alternative regimen (3): Barbiturates 100150 mg q1-4h by any route
- Alternative regimen (4): Chlorpromazine 50150 mg IM q48h
- Pediatric regimen: Lorazepam 0.10.2 mg/kg IV q26h, titrating upward as needed; Barbiturates 610 mg/kg in children by any route; Chlorpromazine 412 mg IM every q48h
- Note: As for Benzodiazepines, large amounts may be required (up to 600 mg/day); oral preparations could be used but must be accompanied by careful monitoring to avoid respiratory depression or arrest
- 5. Autonomic dysfunction control
- Preferred regimen: Magnesium sulphate OR Morphine OR Esmolol
- 6. Airway/respiratory control
- Note: Drugs used to control spasm and provide sedation can result in respiratory depression. If spasm, including laryngeal spasm, is impeding or threatening adequate ventilation, mechanical ventilation is recommended when possible. Early tracheostomy is preferred as endotracheal tubes can provoke spasm and exacerbate airway compromise.
- Clostridium difficile Return to Top
- 1. Pseudomembranous colitis - mild to moderate
- Preferred regimen:Metronidazole 500 mg PO tid for 10-14 days
- Alternative regimen: Vancomycin 125 mg PO qid for 10-14 days
- Note: If significant risk of recurrence: Vancomycin 125 mg PO qid for 10-14 days OR Fidaxomicin 200 mg PO bid for 10 days
- 2. Pseudomembranous colitis - severe
- Preferred regimen: Vancomycin 125 mg PO qid for 10-14 days
- Note: If significant risk of recurrence: Vancomycin 125 mg PO qid for 10-14 days OR Fidaxomicin 200 mg PO bid for 10 days
- 3. Pseudomembranous colitis - severe, complicated
- Preferred regimen: Vancomycin 125-500 mg PO qid for 10-14 days AND Vancomycin 500 mg diluted in 500 ml of saline as enema per rectum q6h AND Metronidazole 500 mg IV q8h
- Note: Consider urgent surgical consult
- 4. Recurrent pseudomembranous colitis
- First recurrence treatment
- Preferred regimen: same as first episode or ] 200 mg PO bid for 10 days
- Second or more recurrence treatment
- Preferred regimen: Vancomycin 125 mg PO qid for 14 days THEN Vancomycin 125 mg PO tid for 7 days THEN Vancomycin 125 mg PO bid for 7 days THEN Vancomycin 125 mg PO qd for 7 days THEN Vancomycin 125 mg PO q48h for 7 days THEN Vancomycin 125 mg PO q72h for 7 days OR Fidaxomicin 200 mg PO bid for 10 days
- Note: Consider expert consult for fecal microbiota transplantation

# Corynebacterium
- Corynebacterium diphtheriae Return to Top
- Diphtheria treatment  
- 1. Antitoxin
- 1.1 Pharyngeal disease <48 hrs
- Preferred regimen: 20,000-40,000 U IV/IM
- 1.2 Nasopharyngeal
- Preferred regimen: 40-60,000 U IV/IM
- 1.3 Extensive disease, or > 72 hrs
- Preferred regimen: 80-120,000 U IV/IM
- Note: IV administration for severe disease
- 2. Antibiotics
- Preferred regimen: Erythromycin 40 mg/kg/day (Maximum, 2 gm/day) PO/IV for 14 days
- Alternative regimen: Procaine penicillin G 600,000 U/day IM qd for 14 days
- Note: Procaine penicillin G  300,000 U/day for those weighing 10 kg or less
- 3. Preventive antibiotic use
- Note: For close contacts, especially household contacts, a diphtheria booster, appropriate for age, should be given
- Preferred regimen: Benzathine penicillin G
- younger than 6 years old: 600,000 U IM
- 6 years old and older: 1,200,000 U IM
- Alternative regimen: Erythromycin
- Adult: 1 g/day PO 7-10 days
- Pediatric: 40 mg/kg/day PO 7-10 days
- Note (1): If surveillance of contacts cannot be maintained, they should receive benzathine penicillin G
- Note (2): Maintain close surveillance and begin antitoxin at the first signs of illness
- Corynebacterium jeikeium Return to Top
- Corynebacterium jeikeium
- Preferred regimen : Vancomycin 1 gm IV q12h
- Alternative regimen : Penicillin G AND Anti pseudomonal aminoglycosides like Tobramycin, Gentamicin, Amikacin
- Corynebacterium urealyticum Return to Top
- Corynebacterium urealyticum
- 1. Post renal transplant obstructive uropathy
- Preferred regimen (1): Vancomycin 1 gm IV q12h
- Preferred regimen (2): Teicoplanin 6 mg/kg/day IV q24h
- Coxiella burnetii Return to Top
- Q fever
- 1. Acute Q fever
- 1.1 Adults
- Preferred Regimen: Doxycycline 100 mg PO bid for 14 days
- 1.2 Children
- 1.2.1 Children with age  8 years
- Preferred regimen: Doxycycline 2.2 mg/kg  PO bid for 14 days (maximum 100 mg per dose)
- 1.2.2  Children with age <8 years with high risk criteria
- Preferred regimen: Doxycycline 2.2 mg/kg PO bid for 14 days (maximum: 100 mg per dose)
- 1.2.3  Children with age <8 years with mild or uncomplicated illness
- Preferred regimen: Doxycycline 2.2 mg/kg  PO bid for 5 days (maximum 100 mg per dose).
- 1.2.3  Children with age < 8 years with mild or uncomplicated illness,who remains febrile past 5 days of treatment
- Preferred regimen: Trimethoprim/Sulfamethoxazole 4-20 mg/kg  PO bid for 14 days (maximum: 800 mg per dose)
- 1.3 Pregnant women
- Preferred regimen: Trimethoprim/Sulfamethoxazole 160 mg/800 mg  PO bid a day throughout pregnancy
- 2. Chronic Q fever
- 2.1 Endocarditis or vascular infection
- Preferred regimen: Doxycycline 100 mg PO bid AND Hydroxychloroquine 200 mg PO tid  for 18 months
- Note: childern and pregnant women- consultation  Recommended
- 2.2 Noncardiac organ disease
- Preferred regimen: Doxycycline 100 mg PO bid AND Hydroxychloroquine 200 mg PO tid
- Note: childern and pregnant women- consultation  Recommended
- 2.3 Postpartum with serologic profile for chronic Q fever
- Preferred regimen: Doxycycline 100 mg PO bid AND Hydroxychloroquine 200 mg PO tid for 12 months
- Note (1): Women should only be treated postpartum if serologic titers remain elevated >12 months after delivery (immunoglobulin G phase I titer 1:1024). Women treated during pregnancy for acute Q fever should be monitored similarly to other patients who are at high risk for progression to chronic disease (e.g., serologic monitoring at 3, 6, 12, 18, and 24 months after delivery)
- Note (2): Post-Q fever fatigue syndrome- no current recommendation.
- Ehrlichia Return to Top
- 1. Human Monocytic Ehrlichiosis or Human Granulocytic Anaplasmosis (adult)  
- Preferred regimen: Doxycycline 100 mg PO/IV q12h for 7-14 days
- Note: Patients should be treated for at least 3 days after the fever subsides and until there is evidence of clinical improvement
- Alternative regimen (1): Chloramphenicol 500mg PO qid
- Alternative regimen (2): Rifampin 600 mg PO/IV qd for 7-10 days
- 2. Human Monocytic Ehrlichiosis or Human Granulocytic Anaplasmosis (pediatric)
- 2.1  8 years old
- Preferred regimen: Doxycycline 2 mg/kg IV/PO q12h (Maximum, 200 mg/day) for 10 days
- 2.2 < 8 years old without Lyme disease
- Preferred regimen: Doxycycline 2 mg/kg IV/PO q12h (Maximum, 200 mg/day) for 4-5 days (or 3 days after resolution of fever)
- 2.3 co-infected with Lyme disease
- Preferred regimen: Doxycycline (see above) THEN Amoxicillin 50 mg/kg/day tid (Maximum, 500 mg/dose) OR Cefuroxime 30 mg/kg/day bid (Maximum, 500 mg/dose) for 14 days
- Erysipelothrix rhusiopathiae Return to Top
- Erysipelothrix rhusiopathiae 
- 1. Erysipeloid of Rosenbach (localized cutaneous infection)
- Preferred regimen (1): Penicillin G benzathine 1.2 MU IV single dose
- Preferred regimen (2): Penicillin VK 250 mg PO qid for 5-7 days
- Preferred regimen (3): Procaine penicillin 0.6-1.2 MU IM qd for 5-7 days
- Alternative regimen (1): Erythromycin 250 mg PO qid for 5-7 days
- Alternative regimen (2): Doxycycline 100 mg PO bid for 5-7 days
- 2. Diffuse cutaneous infection
- Preferred regimen: See localized infection
- 3. Bacteremia or endocarditis
- Preferred regimen: Penicillin G benzathine 2-4 MU IV q4h for 4-6 weeks
- Alternative regimen (1): Ceftriaxone 2 g IV q24h for 4-6 weeks
- Alternative regimen (2): Imipenem 500 mg IV q6h for 4-6 weeks
- Alternative regimen (3): Ciprofloxacin 400 mg IV q12h for 4-6 weeks
- Alternative regimen (4): Daptomycin 6 mg/kg IV q24h for 4-6 weeks
- Note: Recommended duration of therapy for endocarditis is 4 to 6 weeks, although shorter courses consisting of 2 weeks of intravenous therapy followed by 2 to 4 weeks of oral therapy have been successful
- Listeria monocytogenes Return to Top
- 1. Meningitis 
- Preferred regimen: Ampicillin 2g IV q4-6h  Gentamicin 1.7 mg/kg IV q8h for more than 3 weeks
- Alternative regimen: TMP-SMX 3-5 mg/kg (trimethoprim) IV q6h for more than 3 weeks
- 2. Bacteremia
- Preferred regimen: Ampicillin 2g IV q4-6h  Gentamicin 1.7 mg/kg IV q8h for 2 weeks
- Alternative regimen: TMP-SMX 3-5 mg/kg (trimethoprim) q6h IV for 2 weeks
- 3. Brain abscess or rhomboencephalitis
- Preferred regimen: Ampicillin 2g IV q4-6h  Gentamicin 1.7 mg/kg IV q8h for 4-6 weeks
- Alternative regimen: TMP-SMX 3-5 mg/kg (trimethoprim) q6h IV for 4-6 weeks
- 4. Gastroenteritis
- Preferred regimen (1): Amoxicillin 2g IV q4-6h
- Preferred regimen (2): TMP-SMX 3-5 mg/kg (trimethoprim) q6h IV for 7 days
- Lactobacillus Return to Top
- 1. Endovascular Infection 
- Preferred regiemn (1): Penicillin G 20 MU/day for 6 weeks
- Preferred regiemn (2): Gentamicin 1.3 mg/kg IV q8h (trough <1.5 mg/L) AND Polychlorinated naphthalene
- 2. Odontogenic Infection
- Preferred regiemn: Clindamycin 450 mg PO qid
- 3. Intrabdominal Abscess
- Preferred regiemn: Clindamycin 450 mg PO qid
- Leuconostoc Return to Top
- Leuconostoc 
- Preferred regimen (1): Penicillin G
- Preferred regimen (2): Ampicillin
- Alternative regimen (1): Clindamycin
- Alternative regimen (2): Erythromycin
- Alternative regimen (3): Minocycline
- Nocardia Return to Top
- 1. Sulfonamide-based therapies 
- 1.1 Pulmonary
- Preferred regimen: TMP-SMX 10 mg/kg/day (TMP) IV q6-12h for 3-6 weeks THEN 2 DS PO bid for at least 5 months
- 1.2 Pulmonary alternatives
- Preferred regimen: Sulfisoxazole OR Sulfadiazine OR Trisulfapyrimidine 3-6 g/day PO bid-qid OR TMP-SMX 2 DS bid up to 2 DS tid
- 1.3 CNS (AIDS, severe or disseminated disease)
- Preferred regimen: TMP-SMX 15 mg/kg/day (TMP) IV for 3-6 weeks THEN 3 DS PO bid for 6-12 months
- 1.4 CNS alternatives
- Preferred regimen: Imipenem 1000 mg IV q8h OR Ceftriaxone 2 g IV q12h OR Cefotaxime 2-3 g IV q6h AND Amikacin
- 1.5 Severe disease, compromised host, multiple sites
- Preferred regimen: TMP-SMX 15 mg/kg/day (TMP) IV AND Amikacin 7.5 mg/kg q12h OR Sulfonamide 6-12 mg/day PO
- 1.6 Sporotrichoid (cutaneous)
- Preferred regimen: TMP-SMX 1 DS bid for 4-6 months
- Note (1): Immunocompetent medicine use for 6 months; Immunosuppressed medicine for 12 months
- Note (2): Treat based on host, site of disease and in vitro activity; Sulfonamide usually preferred, must treat for 6-12 months; Preferred drugs for resistant strains are Amikacin and/or Imipenem
- Note (3): Seriously ill usually treated with IV Imipenem or Sulfonamide or Cefotaxime all potentially combined with Amikacin; less seriously ill treated with oral agents especially TMP-SMX or Minocycline
- 2. Sulfonamide alternatives
- 2.1 Severe
- Preferred regimen (1): (For AIDS) (Imipenem 1000 mg IV q8h OR Meropenem 2 g q8h AND Amikacin 7.5 mg/kg q12h IV
- Preferred regimen (2): Cefotaxime 2-3 g q6-8h OR Ceftriaxone 2 g/day IV  Amikacin
- 2.2 Mild
- Preferred regimen: Minocycline 100 mg bid for at least 6 months (initial treatment of local disease or maintenance)
- Alternative regimen: Amoxicillin clavulanate 875/125 mg bid OR Doxycycline OR Erythromycin OR Clarithromycin OR Linezolid OR Fluoroquinolone OR combinations for at least 6 months
- Propionibacterium acnes Return to Top
- Propiobacterium acnes 
- 1. Systemic infection
- Preferred regimen: Penicillin G 2 MU IV q4h for 2-4 weeks
- Alternative regimen (1): Clindamycin 600 mg IV q8h for 2-4 weeks
- Alternative regimen (2): Vancomycin 15 mg/kg IV q12h for 2-4 weeks
- 2. Shoulder prosthesis infection
- Preferred regimen: Amoxicillin AND Rifampin for 3-6 months
- 3. Acne vulgaris
- Topical antibiotics: Erythromycin OR Clindamycin
- Systemic antibiotics: Minocycline OR Doxycycline OR Trimethoprim-Sulfamethoxazole
- Rhodococcus equi Return to Top
- Rhodococcus equi 
- First line:
- Preferred regimen: Vancomycin 1 g IV q12h (15 mg/kg q12 for >70 kg) OR Imipenem 500 mg IV q6h AND Rifampin 600 mg PO qd OR Ciprofloxacin 750 mg PO bid OR Erythromycin 500 mg PO qid for at least 4 weeks or until infiltrate disappears
- Note: Should be administrated at least 8 weeks in immunocompromised patients
- Oral/maintenance therapy (after infiltrate clears):
- Preferred regimen (1): Ciprofloxacin 750 mg PO bid
- Preferred regimen (2): Erythromycin 500 mg PO qid
- Alternative regimen: Azithromycin OR TMP-SMX OR Chloramphenicol OR Clindamycin
- Note: Avoid Penicillins/Cephalosporins due to development of resistance; Linezolid effective in vitro, but no clinical reports of use
- Rickettsia prowazekii Return to Top
- Rickettsia rickettsii Return to Top
- 1. Adult  
- Preferred regimen: Doxycycline 100 mg q12h
- Note: Patients should be treated for at least 3 days after the fever subsides and until there is evidence of clinical improvement. Standard duration of treatment is 7-14 days
- Alternative regimen: Chloramphenicol 500 mg PO qid for 7 days or stop 3 days after defervescence
- 2. Pediatric (under 45 kg (100 lbs))
- Preferred regimen: Doxycycline 2.2 mg/kg bid
- Note: The recommended dose and duration of medication needed to treat RMSF has not been shown to cause staining of permanent teeth, even when five courses are given before the age of eight. Healthcare providers should use doxycycline as the first-line treatment for suspected Rocky Mountain spotted fever in patients of all ages
- Rickettsia typhi Return to Top

### Bacteria  Gram-Negative Cocci and Coccobacilli
- Aggregatibacter aphrophilus Return to Top
- 1. Endocarditis
- 1.1 Adults
- Preferred regimen (1): Ceftriaxone 2 g/day TV/IM q24h for 4 weeks
- Preferred regimen (2): Ampicillin-sulbactam 12 g/day TV q6h for 4 weeks
- Preferred regimen (3): Ciprofloxacin 1000 mg PO q24h OR 800 mg/day IV q12h for 4 weeks
- 1.2 Pediatrics
- Preferred regimen (1): Ceftriaxone 100 mg/kg/day TV/IM q24h for 4 weeks
- Preferred regimen (2): Ampicillin-sulbactam 300 mg/kg/day TV q6h/q4h for 4 weeks
- Preferred regimen (3): Ciprofloxacin 20-30 mg/kg/day IV/PO bid for 4 weeks
- Note (1): Floroquinolone therapy recommended for patients unable to tolerate Cephalosporin and ampicillin thearpy
- Note (2): For patients < 18 years, Flourouinolones are generally not recommended
- Note (3): For patients with endocarditis involving the prosthetic cardiac valve or other prosthetic cardiac material should be treated for 6 weeks
- 2. Abscess 
- Note: The small number of patients reported and the variety of antibiotics used, do not permit identification of the optimal therapeutic regimen for this organism.

# Bordetella pertusis
- Bordetella pertussis Return to Top
- Bordetella pertussis
- 1. Whooping cough
- 1.1. Adults
- Preferred regimen (1): Azithromycin 500 mg PO single dose on day 1 THEN 250 mg PO qd on 2-5 days
- Preferred regimen (2): Erythromycin 2 g/day PO qid for 14 days
- Preferred regimen (3): Clarithromycin 1 g PO bid for 7 days.
- Alternative regimen (intolerant of macrolides): Trimethoprim 320 mg/day AND Sulfamethoxazole 1600 mg/day PO bid for 14 days
- 1.2. Infants <6 months of age
- 1.2.1. Infants <1 month
- Preferred regimen (1): Azithromycin 10 mg/kg PO qd for 5 days
- Preferred regimen (2) (if azithromycin unavailable): Erythromycin 40-50 mg/kg/day PO q6h for 14 days
- Note: TMP-SMX contraindicated for infants aged < 2 months
- 1.2.2. Infants of 1-5 months of age
- Preferred regimen (1): Azithromycin 10 mg/kg PO qd for 5 days
- Preferred regimen (2): Erythromycin 40-50 mg/kg/day PO qid for 14 days
- Preferred regimen (3): Clarithromycin 15 mg/kg PO bid for 7 days
- Alternative regimen: For infants aged  2 months TMP 8 mg/kg q24h AND SMX 40 mg/kg/day PO bid for 14 days
- 1.3. Infants 6 months of age-children
- Preferred regimen (1): Azithromycin 10 mg/kg single dose THEN 5 mg/kg (500 mg Maximum) qd for 2-5 days
- Preferred regimen (2): Erythromycin 40-50 mg/kg PO (2 g daily Maximum) qid for 14 days
- Preferred regimen (3): Clarithromycin 15 mg/kg PO (1 g daily Maximum) bid for 7 days
- Preferred regimen (4): TMP 8 mg/kg/day AND SMX 40 mg/kg/day bid for 14 days
- 2. Post exposure prophylaxis
- Preferred regimen: The antibiotic regimens for post exposure prophylaxis are similar to the regimens used for the treatment of pertussis
- Note (1):  Post exposure prophylaxis to an asymptomatic contacts within 21 days of onset of cough in the index patient can potentially prevent symptomatic infection
- Note (2): Close contacts include persons who have direct contact with respiratory, oral or nasal secretions from a symptomatic patient (eg: cough, sneeze, sharing food, eating utensils, mouth to mouth resuscitation, or performing a medical examination of the mouth, nose, throat.
- Note (3): Some close contacts are at high risk for acquiring severe disease following exposure to pertussis. These contacts include infants aged < 1 year , persons with some immunodeficiency conditions, or other underlying medical conditions such as chronic lung disease, respiratory insufficiency and cystic fibrosis.

# Brucella
- Brucella Return to Top
- Brucellosis ,
- 1.Uncomplicated brucellosis in adults and children 8yrs of age
- Preferred regimen: Doxycycline 100 mg  PO bid for 6 weeks AND Streptomycin 1 g/day IM  for  2-3 weeks
- Alternative regimen (1): Doxycycline 100 mg/day PO for six weeks AND Gentamicin 5mg/kg IM  for 7-days
- Alternative regimen (2): Gentamicin 5mg/kg/day IV/ IM  for 7-10 days  AND Rifampicin 600900 mg/day PO for six weeks
- 2. Complications of brucellosis
- 2.1 Spondylitis
- Preferred regimen:Doxycycline for 3 months  AND Streptomycin for 2 to 3 weeks.
- 2.2 Neurobrucellosis
- Preferred regimen: Ceftriaxone 2 mg IV q12h for 1 month AND Doxycycline 100 mg PO bid for 4-5 month AND Rifampicin 600900 mg/day PO for  4-5 month
- 2.3 Brucella endocarditis
- Preferred regimen: Doxycycline AND an Aminoglycoside for at least 8 weeks, and therapy should be continued for several weeks after surgery when valve replacement is necessary
- Note: Rifampicin OR Trimethoprim/sulfamethoxazole are used for their ability to penetrate cell membranes
- 3. Pregnancy
- Preferred regimen: Rifampin 900 mg PO qd  for 6 weeks
- Note: Adding Trimethoprim-sulfamethoxazole can be considered, but this option should probably be avoided preceding the 13th week and after the 36th week of gestation because of concern about teratogenicity and kernicterus.
- 4.For children < 8 yrs of age
- Preferred regimen (1): TMP/SMZ 8/40 mg/ kg/day PO bid  for 6 weeks AND Streptomycin 30 mg/kg/day IM q24h  for 3 weeks
- Preferred regimen (2): Gentamicin 5 mg/kg/day IM/ IV q24h for 7-10 days
- Alternative regimen (1): TMP/SMZ AND Rifampicin 15 mg/kg/day PO for 6 weeks
- Alternative regimen (2): Rifampicin AND an Aminoglycoside
- Eikenella corrodens Return to Top
- 1. Human bite/soft tissue infections 
- 1.1 Severe
- Preferred regimen: Ampicillin sulbactam 1.5-3 g IV q6h
- Alternative regimen (1): Doxycycline 100 mg IV bid
- Alternative regimen (2): Moxifloxacin 400 mg IV q24h
- Alternative regimen (3): Levofloxacin 500 mg IV q24h
- 1.2 Mild
- Preferred regimen: Amoxicillin clavulanate 250-500 mg tid or 875/125 mg PO bid
- Alternative regimen (1): Doxycycline 100 mg PO bid
- Alternative regimen (2): Moxifloxacin 400 mg PO qd
- Alternative regimen (3): Levofloxacin 500 mg PO qd
- 2. Head and neck infections
- 2.1 Severe
- Preferred regimen: Ampicillin sulbactam 1.5-3 g IV q6h
- Alternative regimen (1): Doxycycline 100 mg IV bid
- Alternative regimen (2): Moxifloxacin 400 mg IV q24h
- Alternative regimen (3): Levofloxacin 500 mg IV q24h
- 2.2 Mild
- Preferred regimen: Amoxicillin clavulanate 250-500 mg tid or 875/125 mg PO bid
- Alternative regimen (1): Doxycycline 100 mg PO bid
- Alternative regimen (2): Moxifloxacin 400 mg PO qd
- Alternative regimen (3): Levofloxacin 500 mg PO qd
- 3. Endocarditis
- Preferred regimen (1): Ceftriaxone 1 g IV q12h
- Preferred regimen (1): Cefotaxime 1-2 g IV q8h
- Preferred regimen (1): Cefepime 1-2g IV q8h

# Haemophilus ducreyi
- Haemophilus ducreyi Return to Top
- 1. Chancroid
- Preferred Regimen (1): Azithromycin 1 g PO in a single dose
- Preferred Regimen (2): Ceftriaxone 250 mg IM in a single dose
- Preferred Regimen (3): Ciprofloxacin 500 mg PO bid for 3 days
- Preferred Regimen (4): Erythromycin base 500 mg PO tid for 7 days
- Note: Patients should be tested for HIV infection at the time chancroid is diagnosed. If the initial test results were negative, a serologic test for syphilis and HIV infection should be performed 3 months after the diagnosis of chancroid.
- 1.1 Follow-up
- Patients should be re-examined 37 days after initiation of therapy. If treatment is successful, ulcers usually improve symptomatically within 3 days and objectively within 7 days after therapy. If no clinical improvement is evident, the clinician must consider whether 1) the diagnosis is correct, 2) the patient is coinfected with another STD, 3) the patient is infected with HIV, 4) the treatment was not used as instructed, or 5) the H. ducreyi strain causing the infection is resistant to the prescribed antimicrobial.
- Clinical resolution of fluctuant lymphadenopathy is slower than that of ulcers and might require needle aspiration or incision and drainage, despite otherwise successful therapy. Although needle aspiration of buboes is a simpler procedure, incision and drainage might be preferred because of reduced need for subsequent drainage procedures.
- 1.2 Management of sex partners
- Regardless of whether symptoms of the disease are present, sex partners of patients who have chancroid should be examined and treated if they had sexual contact with the patient during the 10 days preceding the patients onset of symptoms.
- 1.3 Pregnancy
- Ciprofloxacin presents a low risk to the fetus during pregnancy, with a potential for toxicity during breastfeeding. Alternative drugs should be used during pregnancy and lactation
- 1.4 HIV Infection
- Persons with HIV infection who have chancroid should be monitored closely because they are more likely to experience treatment failure and to have ulcers that heal slowly. Persons with HIV infection might require repeated or longer courses of therapy, and treatment failures can occur with any regimen.

# Haemophilus influenzae
- Haemophilus influenzae Return to Top
- Haemophilus influenzae
- 1. Non- life threatening infections
- 1.1 Adults
- Preferred regimen (1): Amoxicillin-clavulanate 500 mg PO tid or 875 mg PO bid
- Preferred regimen (2): Amoxicillin 500 mg PO tid
- Preferred regimen (3): TMP-SMX DS PO bid
- Preferred regimen (4): Cefuroxime 250-500 mg PO bid
- Preferred regimen (5): Moxifloxacin 400 mg PO qd
- Preferred regimen (6): Levofloxacin 500 mg PO qd
- Preferred regimen (7): Azithromycin 500 mg PO single dose then 250 mg for 4 days
- Preferred regimen (8): Clarithromycin 500 mg PO bid or XL 500 mg PO q24h
- Note: Treatment duration of otitis media is 10-14 days, acute exacerbation of chronic bronchitis is 5 days (quinolone - 14 days), sinusitis is 10-14 days.
- 2. Meningitis
- Dexamethasone 0.15 mg/kg 15-20 mins before first dose of antibiotic and then q6h for 4 days
- 2.1 Adults
- Preferred regimen (1): Ceftriaxone 2 g IV q12h (4 g maximum)
- Preferred regimen (2): Cefotaxime 2 g IV q4-6h (12 g maximum)
- Preferred regimen (3): Ampicillin 2 g IV q4h if sensitive
- Alternative regimen: Ciprofloxacin 400 mg IV q8h OR other Fluoroquinolones
- 2.2 Pediatric
- 2.2.1 Neonates < 7 days
- 2.2.1.1 Weight < 2 kg
- Preferred regimen: Cefotaxime 50 mg/kg IV q12h for 10-14 days
- 2.2.1.2 Weight > 2 kg
- Preferred regimen (1): Cefotaxime 50 mg/kg IV q8h
- Preferred regimen (2): Ceftriaxone 50 mg/kg IV q24h for 10-14 days
- 2.2.2 Neonates >7 days
- 2.2.2.1 Weight > 2 kg
- Preferred regimen (1): Cefotaxime 50 mg/kg IV q6-8h
- Preferred regimen (2): Ceftriaxone 75 mg/kg IV q24h for 10-14 days
- 2.2.3 Children
- Preferred regimen (1): Cefotaxime 200 mg/kg/day IV q6h
- Preferred regimen (2): Ceftriaxone 100 mg/kg IV q12-24h for 10-14 days
- 2.3 Post-meningitis exposure prophylaxis
- Preferred regimen (1): Rifampin 600 mg PO qd for 4 days
- 3. Severe infections
- 3.1 Adults
- Preferred regimen (1): Ceftriaxone 1-2 g IV q24 or q12h
- Preferred regimen (2): Cefotaxime 2 g IV q6h
- Alternative regimen (1): Ciprofloxacin 400 mg IV q8h or other Fluoroquinolones
- Alternative regimen (2): Ampicillin 2 g IV q6h if sensitive

# Neisseria gonorrhoeae
- Neisseria gonorrhoeae Return to Top
- Neisseria gonorrhoeae treatment
- 1. Gonococcal infections in adolescents and adults
- 1.1 Uncomplicated gonococcal infections of the cervix, urethra, and rectum
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1 g PO in a single dose
- Alternative regimen: Cefixime 400 mg PO in a single dose AND Azithromycin 1 g PO in a single dose (if ceftriaxone is not available)
- 1.2 Uncomplicated gonococcal infections of the pharynx
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1 g PO in a single dose
- 1.2.1 Management of sex partners
- Expedited partner therapy: Cefixime 400 mg PO in a single dose AND Azithromycin 1 g PO in a single dose
- Note (1): Recent sex partners (i.e., persons having sexual contact with the infected patient within the 60 days preceding onset of symptoms or gonorrhea diagnosis) should be referred for evaluation, testing, and presumptive dual treatment.
- Note (2): If the patients last potential sexual exposure was >60 days before onset of symptoms or diagnosis, the most recent sex partner should be treated.
- Note (3): To avoid reinfection, sex partners should be instructed to abstain from unprotected sexual intercourse for 7 days after they and their sexual partner(s) have completed treatment and after resolution of symptoms, if present.
- 1.2.2  Allergy, intolerance, and adverse reactions
- Preferred regimen (1): Gemifloxacin 320 mg PO in a single dose AND Azithromycin 2 g PO in a single dose
- Preferred regimen (2): Gentamicin 240 mg IM in a single dose AND Azithromycin 2 g PO in a single dose
- Note: Use of ceftriaxone or cefixime is contraindicated in persons with a history of an IgE-mediated penicillin allergy (e.g., anaphylaxis, Stevens Johnson syndrome, and toxic epidermal necrolysis).
- 1.2.3 Pregnancy
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1 g PO in a single dose
- 1.2.4 Suspected cephalosporin treatment failure
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Gemifloxacin 320 mg PO  single dose  AND Azithromycin 2 g PO  single dose (when isolates have elevated cephalosporin MICs)
- Alternative regimen (2): Gentamicin 240 mg IM  single dose AND Azithromycin 2 g PO single dose (when isolates have elevated cephalosporin MICs)
- Alternative regimen (3): Ceftriaxone 250 mg IM as a single dose AND Azithromycin 2 g PO as a single dose (failure after treatment with cefixime and azithromycin)
- Note: Treatment failure should be considered in: (1) persons whose symptoms do not resolve within 35 days after appropriate treatment and report no sexual contact during the post-treatment follow-up period; (2) persons with a positive test-of-cure (i.e., positive culture  72 hours or positive NAAT  7 days after receiving recommended treatment) when no sexual contact is reported during the post-treatment follow-up period; (3) persons who have a positive culture on test-of-cure (if obtained) if there is evidence of decreased susceptibility to cephalosporins on antimicrobial susceptibility testing, regardless of whether sexual contact is reported during the post-treatment follow-up period.
- 1.3 Gonococcal conjunctivitis
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1 g PO in a single dose
- 1.3.1 Management of sex partners
- Patients should be instructed to refer their sex partners for evaluation and treatment.
- 1.4 Disseminated gonococcal infection
- 1.4.1 Arthritis and arthritis-dermatitis syndrome
- Preferred regimen: Ceftriaxone 1 g IM/IV q24h for 7 days AND Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Cefotaxime 1 g IV q8h for 7 days
- Alternative regimen (2): Ceftizoxime 1 g IV q8h  for 7 days AND Azithromycin 1 g PO in a single dose
- 1.4.2 Gonococcal meningitis and endocarditis
- Preferred regimen: Ceftriaxone 1-2 g IV  q 12-24 h  for 10-14 days AND Azithromycin 1 g PO in a single dose
- 2. Gonococcal infections among neonates
- 2.1 Ophthalmia neonatorum caused by N. gonorrhoeae
- Preferred regimen: Ceftriaxone 25-50 mg/kg IM/IV in a single dose, not to exceed 125 mg
- 2.1.1 Management of mothers and their sex partners
- Mothers of infants with ophthalmia neonatorum caused by N. gonorrhoeae should be evaluated, tested, and presumptively treated for gonorrhea, along with their sex partner(s).
- 2.2 Disseminated gonococcal infection and gonococcal scalp abscesses in neonates
- Preferred regimen (1): Ceftriaxone 25-50 mg/kg/day IM/IV q24h for 7 days
- Preferred regimen (2): Cefotaxime 25 mg/kg IM/IV  q12h for 7 days.
- Note (1): The duration of treatment is 10-14 days if meningitis is documented.
- Note (2): Ceftriaxone should be administered cautiously to hyperbilirubinemic infants, especially those born prematurely.
- 2.2.1 Management of mothers and their sex partners
- Mothers of infants who have DGI or scalp abscesses caused by N. gonorrhoeae should be evaluated, tested, and presumptively treated for gonorrhea, along with their sex partner(s).
- 2.3 Neonates born to mothers who have gonococcal infection
- Preferred regimen: Ceftriaxone 25-50 mg/kg IM/IV in a single dose, not to exceed 125 mg
- 2.3.1 Management of mothers and their sex partners
- Mothers who have gonorrhea and their sex partners should be evaluated, tested, and presumptively treated for gonorrhea.
- 3. Gonococcal infections among infants and children
- 3.1 Infants and children who weigh  45 kg and who have uncomplicated gonococcal vulvovaginitis, cervicitis, urethritis, pharyngitis, or proctitis
- Preferred regimen: Ceftriaxone 25-50 mg/kg IM/IV in a single dose, not to exceed 125 mg
- 3.2 Children who weigh > 45 kg and who have uncomplicated gonococcal vulvovaginitis, cervicitis, urethritis, pharyngitis, or proctitis
- Preferred regimen: Ceftriaxone 250 mg IM in a single dose AND Azithromycin 1g PO in a single dose
- Alternative regimen: Cefixime 400 mg PO  single dose AND Azithromycin 1 g PO single dose.(If ceftriaxone is not available)
- 3.3 Children who weigh  45 kg and who have bacteremia or arthritis
- Preferred regimen: Ceftriaxone 50 mg/kg (maximum dose: 1 g) IM/IV q24h for 7 days
- 3.4 Children who weigh > 45 kg and who have bacteremia or arthritis
- Preferred regimen: Ceftriaxone 1 g IM/IV q24h for 7 days

# Neisseria meningitidis
- Neisseria meningitidis Return to Top
- 1. Meningococcal meningitis or meningococcemia, treatment
- 1.1 Adults
- 1.1.1 Penicillin MIC < 0.1 mcg/mL
- Preferred regimen (1): Penicillin G 4 MU IV q4h for 7 days
- Preferred regimen (2): Ampicillin 2 g IV q4h for 7 days
- Alternative regimen (1): Ceftriaxone 4 g/day IV q12-24h for 7 days
- Alternative regimen (2): Cefotaxime 8-12 g/day IV q4-6h for 7 days
- Alternative regimen (3): Chloramphenicol 4-6 g/day IV q6h for 7 days
- 1.1.2 Penicillin MIC 0.1-1.0 mcg/mL
- Preferred regimen (1): Ceftriaxone 4 g/day IV q12-24h for 7 days
- Preferred regimen (2): Cefotaxime 8-12 g/day IV q4-6h for 7 days
- Alternative regimen (1): Cefepime 2 g IV q8h for 7 days
- Alternative regimen (2): Chloramphenicol 4-6 g/day IV q6h for 7 days
- Alternative regimen (3): Moxifloxacin 400 mg IV q24h for 7 days
- Alternative regimen (4): Meropenem 2 g IV q8h for 7 days
- 1.2 Neonates (birth-7 days old)
- 1.2.1 Penicillin MIC < 0.1 mcg/mL
- Preferred regimen (1): Penicillin G 0.15 MU/kg/day IV q8-12h for 7 days
- Preferred regimen (2): Ampicillin 150 mg/kg/day IV q8h for 7 days
- Alternative regimen (1): Cefotaxime 100-150 mg/kg/day IV q8-12h for 7 days
- Alternative regimen (2): Chloramphenicol 25 mg/kg/day IV q24h for 7 days
- 1.2.2 Penicillin MIC 0.1-1.0 mcg/mL
- Preferred regimen: Cefotaxime 100-150 mg/kg/day IV q8-12h for 7 days
- Alternative regimen: Chloramphenicol 25 mg/kg/day IV q24h for 7 days
- 1.3 Neonates (8-28 days old)
- 1.3.1 Penicillin MIC < 0.1 mcg/mL
- Preferred regimen (1): Penicillin G 0.2 MU/kg/day IV q6-8h for 7 days
- Preferred regimen (2): Ampicillin 200 mg/kg/day IV q6-8h for 7 days
- Alternative regimen (1): Cefotaxime 150-200 mg/kg/day IV q6-8h  for 7 days
- Alternative regimen (2): Chloramphenicol 50 mg/kg/day IV q12-24h for 7 days
- 1.3.2 Penicillin MIC 0.1-1.0 mcg/mL
- Preferred regimen : Cefotaxime 150-200 mg/kg/day IV q6-8h  for 7 days
- Alternative regimen : Chloramphenicol 50 mg/kg/day IV q12-24h for 7 days
- 1.4 Infants and children
- 1.4.1 Penicillin MIC < 0.1 mcg/mL
- Preferred regimen (1): Penicillin G 0.3 MU/kg/day IV q4-6h for 7 days
- Preferred regimen (2): Ampicillin 300 mg/kg/day IV q6h for 7 days
- Alternative regimen (1): Ceftriaxone 80-100 mg/kg/day IV q12-24h for 7 days
- Alternative regimen (2): Cefotaxime 225-300 mg/kg/day IV q6-8h for 7 days
- Alternative regimen (3): Chloramphenicol 75-100 mg/kg/day IV q6h for 7 days
- 1.4.2 Penicillin MIC 0.1-1.0 mcg/mL
- Preferred regimen (1): Ceftriaxone 80-100 mg/kg/day IV q12-24h for 7 days
- Preferred regimen (2): Cefotaxime 225-300 mg/kg/day IV q6-8h for 7 days
- Alternative regimen (1): Cefepime 150 mg/kg/day IV q8h for 7 days
- Alternative regimen (2): Chloramphenicol 75-100 mg/kg/day q6h for 7 days
- Alternative regimen (3): Meropenem 120 mg/kg/day IV q8h for 7 days
- Note (1): Dexamethasone has not been shown to be beneficial in meningococcal meningitis and should be discontinued once this diagnosis is established.
- Note (2): Clinical data are limited on the use of fluoroquinolones for therapy for meningococcal meningitis but may be considered in patients not responding to standard therapy or when disease is caused by resistant organisms.
- 2. Meningococcal meningitis, prophylaxis for household and close contacts
- 2.1 Adults
- Preferred regimen (1): Rifampin 600 mg PO bid for 2 days
- Preferred regimen (2): Ciprofloxacin 500 mg PO single dose
- Preferred regimen (3): Ceftriaxone 250 mg IM single dose
- 2.2 Children < 15 years
- Preferred regimen: Ceftriaxone 12 mg IM single dose
- 2.3 Children  1 month
- Preferred regimen: Rifampin  10 mg /kg  PO bid for 2 days
- 2.4 Children < 1 month
- Preferred regimen: Rifampin 5 mg/kg PO bid for 2 days
- Moraxella catarrhalis Return to Top
- Moraxella catarrhalis 
- Preferred regimen(1): TMP-SMX 1DS PO bid
- Preferred regimen(2): Erythromycin 500 mg PO qid
- Preferred regimen(3): Clarithromycin 500 mg PO bid or XL 1 g PO qd
- Preferred regimen(4): Azithromycin 500 mg PO single dose THEN 250 mg PO qd
- Preferred regimen(5): Doxycycline 100 mg PO/IV bid/q12h
- Preferred regimen(6): Cefprozil 200-500 mg PO bid
- Preferred regimen(7): Cefpodoxime 200-400 mg PO bid
- Preferred regimen(8): Cefuroxime 250-500 mg PO bid
- Preferred regimen(9): Cefdinir 300 mg PO bid
- Preferred regimen(10): Moxifloxacin 400 mg IV/PO qd
- Preferred regimen(11): Levofloxacin 500 mg IV/PO qd
- Preferred regimen(12): Amoxicillin clavulanate 875/125 mg PO bid or XL 2000/125 PO bid
- Pasteurella multocida Return to Top
- Pasteurella multocida 
- Preferred regimen (1): Amoxicillin clavulanate 500 mg PO tid or 875 mg PO bid with food
- Note: Its also a preferred empirical coverage of animal bite wounds
- Preferred regimen (2): Ampicillin sulbactam 3 g IV q6h
- Preferred regimen (3): Ciprofloxacin 500 mg PO bid or 400 mg IV q12h
- Preferred regimen (4): Levofloxacin 500 mg PO qd or IV q24h
- Alternative regimen (1): Doxycycline 100 mg PO bid
- Alternative regimen (2): TMP-SMX DS PO bid (for beta-lactam allergic patients )
- Alternative regimen (3): Penicillin 500 mg PO qid or 4 MU IV q4h (use only if isolate known to be susceptible)

### Bacteria  Spirochetes
- Borrelia burgdorferi Return to Top
- Lyme disease 
- 1. Early Lyme Disease
- 1.1 Erythema migrans
- 1.1.1 Adult
- Preferred regimen (1): Doxycycline 100 mg PO bid for 10-21 days
- Preferred regimen (2): Amoxicillin 500 mg PO tid for 14-21 days
- Preferred regimen (3): Cefuroxime axetil 500 mg bid for 14-21 days
- Alternatie regimen (1): Azithromycin 500 mg PO qd for 710 days
- Alternatie regimen (2): Clarithromycin 500 mg PO bid for 1421 days (if the patient is not pregnant)
- Alternatie regimen (3): Erythromycin 500 mg PO qid for 1421 days
- 1.1.2 Pediatric
- 1.1.2.1 children <8 years of age
- Preferred regimen (1): Amoxicillin 50 mg/kg/day PO q8h (Maximum of 500 mg per dose)
- Preferred regimen (2): Cefuroxime axetil 30 mg/kg/day PO q12h(Maximum, 500 mg per dose)
- 1.1.2.2 children 8 years of age
- Preferred regimen (1): Doxycycline 4 mg/kg/day PO q12h(Maximum, 100 mg per dose)
- Preferred regimen (2): Azithromycin 10 mg/kg PO qd (Maximum, 500 mg qd)
- Preferred regimen (3): Clarithromycin 7.5 mg/kg PO bid (Maximum, 500 mg per dose)
- Preferred regimen (4): Erythromycin 12.5 mg/kg PO qid (Maximum, 500 mg per dose)
- 1.2 When erythema migrans cannot be reliably distinguished from community-acquired bacterial cellulitis
- Preferred regimen: Amoxicillin-Clavulanate 500 mg PO tid
- Pediatric regimen: Amoxicillin-Clavulanate 50 mg/kg/day q8h (Maximum, 500 mg per dose)
- 1.3 Lyme meningitis and other manifestations of early neurologic Lyme disease
- 1.3.1 Adult
- Preferred regimen: Ceftriaxone 2 g IV q24h for 1028 days
- Alternative regimen (1): Cefotaxime 2 g IV q8h
- Alternative regimen (2): Penicillin G 1824 MU q4h (for patients with normal renal function)
- Alternative regimen (3): Doxycycline 200400 mg/day PO bid for 1028 days
- 1.3.2 Pediatric
- Preferred regimen (1): Ceftriaxone 5075 mg/kg IV single dose (Maximum, 2 g)
- Preferred regimen (2): Cefotaxime 150200 mg/kg/day IV q6-8h (Maximum, 6 g per day)
- Alternative regimen (1): Penicillin G 200,000400,000 units/kg/day IV  q4h (for normal renal function) (maximum, 1824 MU per day)
- Alternative regimen (2): Doxycycline 48 mg/kg/day PO bid (maximum, 100200 mg per dose) (8 years old)
- 1.4 Lyme carditis
- Preferred regimen: Ceftriaxone 2 g IV q24h for 1028 days
- Note: patients with advanced heart block, a temporary pacemaker may be required; expert consultation with a cardiologist is recommended; Use of the pacemaker may be discontinued when the advanced heart block has resolved; An oral antibiotic treatment regimen should be used for completion of therapy and for outpatients, as is used for patients with erythema migrans without carditis (see above)
- 1.5 Borrelial lymphocytoma
- Preferred regimen: The same regimens used to treat patients with erythema migrans (see above)
- 2. Late Lyme Disease
- 2.1 Lyme arthritis
- Preferred regimen (1): Doxycycline 100 mg PO bid
- Preferred regimen (2): Amoxicillin 500 mg PO tid
- Alternative regimen: Cefuroxime axetil 500 mg PO bid for 28 days
- Pediatric regimen: Amoxicillin 50 mg/kg/day tid (Maximum, 500 mg per dose); Cefuroxime axetil 30 mg/kg/day bid (Maximum,500 mg per dose); (8 years of age) Doxycycline 4 mg/kg/day bid (Maximum, 100 mg per dose)
- Note: For patients who have persistent or recurrent joint swelling after a recommended course of oral antibiotic therapy, we recommend re-treatment with another 4-week course of oral antibiotics or with a 24 weeks course of Ceftriaxone IV
- 2.2 patients with arthritis and objective evidence of neurologic disease
- Preferred regimen: Ceftriaxone IV for 24 weeks
- Alternative regimen (1): Cefotaxime IV
- Alternative regimen (1): Penicillin G IV
- Pediatric regime: Ceftriaxone; Cefotaxime; Penicillin G IV
- 2.3 Late neurologic Lyme disease
- Preferred regimen: Ceftriaxone IV for 2 to 4 weeks
- Alternative regimen (1): Cefotaxime IV
- Alternative regimen (2): Penicillin G IV
- Pediatric regimen: Ceftriaxone; Cefotaxime; Penicillin G
- 2.4 Acrodermatitis chronica atrophicans
- Preferred regimen (1): Doxycycline 100 mg PO bid for 21 days
- Preferred regimen (2): Amoxicillin 500 mg PO tid for 21 days
- Preferred regimen (3): Cefuroxime axetil 500 mg PO bid for 21 days
- 3. PostLyme Disease Syndromes
- Preferred regimen: Further antibiotic therapy for Lyme disease should not be given unless there are objective findings of active disease (including physical findings, abnormalities on cerebrospinal or synovial fluid analysis, or changes on formal neuropsychologic testing)
- Borrelia recurrentis Return to Top
- 1. Tick-Borne Relapsing Fever 
- Preferred regimen: Doxycycline 100 mg PO bid for 5-10 days
- Alternative regimen: Erythromycin 500 mg PO qid for 5-10 days
- Note: If meningitis/encephalitis present, use Ceftriaxone 2 g IV q12h for 14 days
- 2. Louse-Borne Relapsing Fever
- Preferred regimen: Tetracycline 500 mg PO single dose
- Alternative regimen: Erythromycin 500 mg PO single dose
- Leptospira Return to Top
- 1. Severe  
- Preferred regimen: Penicillin 1.5 MU IV q6h for 5-7 days
- 2. Less severe
- Preferred regimen (1): Amoxycillin
- Preferred regimen (2): Ampicillin
- Preferred regimen (3): Doxycycline 100 mg IV/PO q12h/bid for 5-7 days
- Preferred regimen (4): Erythromycin
- Preferred regimen (5): Ceftriaxone 1 g IV q24h for 5-7 days
- Preferred regimen (6): Cefotaxime
- Preferred regimen (7): Quinolone PO
- Treponema pallidum Return to Top
- 1. Syphilis Among non-HIV-Infected Persons 
- 1.1 Primary and Secondary Syphilis
- Preferred regimen: Benzathine penicillin G 2.4 MU IM single dose
- Pediatric regimen: Benzathine penicillin G 50,000 U/kg (Maximum, 2.4 MU) IM single dose
- 1.2 Latent Syphilis
- 1.2.1 Early Latent Syphilis
- Preferred regimen: Benzathine penicillin G 2.4 MU IM in a single dose
- Pediatric regimen: Benzathine penicillin G 50,000 U/kg (Maximum, 2.4 MU) IM single dose
- 1.2.2 Late Latent Syphilis or Latent Syphilis of Unknown Duration
- Preferred regimen: Benzathine penicillin G 7.2 MU total, administered as 3 doses of 2.4 MU IM each at 1 week intervals
- Pediatric regimen: Benzathine penicillin G 50,000 U/kg IM (Maximum, 2.4 MU), administered as 3 doses at 1 week intervals (total 150,000 U/kg up to the adult total dose of 7.2 MU)
- 1.3 Tertiary Syphilis
- Preferred regimen: Benzathine penicillin G 7.2 MU total, administered as 3 doses of 2.4 MU IM each at 1 week intervals
- 1.4 Neurosyphilis and ocular syphilis
- Preferred regimen: Aqueous crystalline penicillin G 18-24 MU per day, administered as 3-4 MU IV q4h or continuous infusion, for 10-14 days
- Alternative regimen: Procaine penicillin 2.4 MU IM q24h AND Probenecid 500 mg PO qid for 10-14 days
- 2. Syphilis Among HIV-Infected Persons
- 2.1 Primary and Secondary Syphilis Among HIV-Infected Persons
- Preferred regimen: Benzathine penicillin G 2.4 MU IM single dose
- 2.2 Latent Syphilis Among HIV-Infected Persons
- 2.2.1 early latent
- Preferred regimen: Benzathine penicillin G 2.4 MU IM single dose
- 2.2.2 late latent
- Preferred regimen: Benzathine penicillin G 2.4 MU once a week for 3 weeks
- 2.3 Neurosyphilis Among HIV-Infected Persons
- Preferred regimen: Aqueous crystalline penicillin G 18-24 MU per day, administered as 3-4 MU IV q4h or continuous infusion, for 10-14 days
- Alternative regimen: Procaine penicillin 2.4 MU IM q24h AND Probenecid 500 mg PO qid  for 10-14 days
- 3. Syphilis During Pregnancy
- Pregnant women should be treated with the penicillin regimen appropriate for their stage of infection
- 4. Congenital Syphilis in neonates
- 4.1 condition1: Infants with proven or highly probable disease and (1) an abnormal physical examination that is consistent with congenital syphilis;(2)a serum quantitative nontreponemal serologic titer that is fourfold higher than the mother's titer; or(3)a positive darkfield test of body fluid(s).
- Preferred regimen (1): Aqueous crystalline penicillin G 100,000-150,000 U/kg/day, administered as 50,000 U/kg/dose IV q12h during the first 7 days of life and q8h thereafter for a total of 10 days
- Preferred regimen (2): Procaine penicillin G 50,000 U/kg/dose IM q24h for 10 days
- Note: If more than 1 day of therapy is missed, the entire course should be restarted. Data are insufficient regarding the use of other antimicrobial agents (e.g., ampicillin). When possible, a full 10-day course of penicillin is preferred, even if ampicillin was initially provided for possible sepsis. The use of agents other than penicillin requires close serologic follow-up to assess adequacy of therapy. In all other situations, the maternal history of infection with T. pallidum and treatment for syphilis must be considered when evaluating and treating the infant.
- 4.2 condition2: Infants who have a normal physical examination and a serum quantitive nontreponemal serologic titer the same or less than fourfold the maternal titer and the (1) mother was not treated, inadequately treated, or has no documentation of having received treatment; (2) mother was treated with erythromycin or another nonpenicillin regimen; or (3) mother received treatment <4 weeks before delivery.
- Preferred regimen (1): Aqueous crystalline penicillin G 100,000-150,000 U/kg/day, administered as 50,000 U/kg/dose IV q12h during the first 7 days of life and q8h thereafter for a total of 10 days
- Preferred regimen (2): Procaine penicillin G 50,000 U/kg/dose IM q24h for 10 days
- Preferred regimen (3): Benzathine penicillin G 50,000 U/kg/dose IM single dose
- Note: If the mother has untreated early syphilis at delivery, 10 days of parenteral therapy can be considered
- 4.3 condition3: Infants who have a normal physical examination and a serum quantitative nontreponemal serologic titer the same or less than fourfold the maternal titer and the (1) mother was treated during pregnancy, treatment was appropriate for the stage of infection, and treatment was administered >4 weeks before delivery and (2) mother has no evidence of reinfection or relapse.
- Preferred regimen: Benzathine penicillin G 50,000 U/kg/dose IM single dose
- 4.4 condition4: Infants who have a normal physical examination and a serum quantitative nontreponemal serologic titer the same or less than fourfold the maternal titer and the (1) mother's treatment was adequate before pregnancy; and (2) mother's nontreponemal serologic titer remained low and stable before and during pregnancy and at delivery (VDRL <1:2; RPR <1:4).
- No treatment is required
- Benzathine penicillin G 50,000 U/kg IM single dose might be considered, particularly if follow-up is uncertain.
- 5. Congenital Syphilis in infants and children
- Preferred regimen: Aqueous crystalline penicillin G 50,000 U/kg q46h for 10 days

### Bacteria  Gram-Negative Bacilli
- Achromobacter xylosoxidans Return to Top
- Achromobacter xylosoxidans treatment,,,,,
- Preferred regimen: most active agents are Piperacillin-Tazobactam, Meropenem AND TrimethoprimSulfamethoxazole whereas Ceftazidime is more active than Cefepime
- Alternative regimen: Colistin inhaled, could also be considered
- Note : Achromobacter (formerly Alcaligenes) xylosoxidans is a newly emerging microorganism isolated with increased frequency from the lungs of patients with cystic fibrosis. Combination therapy has been recommended for the treatment of Achromobacter xylosoxidans pulmonary exacerbations in cystic fibrosis

# Acinetobacter baumannii
- Acinetobacter baumannii Return to Top
- Acinetobacter baumannii
- Preferred regimen (1): Imipenem 0.5-1 g IV q6h
- Preferred regimen (2): Ampicillin/sulbactam 3 g IV q4h
- Preferred regimen (3): Cefepime 1-2 g IV q8h
- Preferred regimen (4): Colistin 2.5 mg/kg IV q12h
- Preferred regimen (5): Tigecycline 100 mg IV single dose THEN 50 mg IV q12h
- Preferred regimen (6): Amikacin 7.5 mg/kg IV q12h or 15 mg/kg IV q24h
- Preferred regimen (7) (pan-resistant isolates): Colistin 5 mg/kg/day IV q12h  Imipenem
- Preferred regimen (8) (pan-resistant isolates): Ampicillin-sulbactam 3 g IV q4h
- Alternative regimen (1): Ceftriaxone 1-2 g IV qd
- Alternative regimen (2): Cefotaxime 2-3 g IV q6-8h
- Alternative regimen (3): Ciprofloxacin 400 mg IV q8-12h or 750 mg PO bid
- Alternative regimen (4): TMP-SMX 15-20 mg (TMP)/kg/day IV q6-8h or 2 DS PO bid

# Aeromonas hydrophila
- Aeromonas hydrophila Return to Top
- Aeromonas hydrophila 
- 1. Diarrhea
- Preferred regimen (if not self-limiting, or if severe): Ciprofloxacin 500 mg PO bid.
- Alternate regimen: TMP-SMX 1 DS PO bid
- Note: High resistance to sulfa agents described in Taiwan and Spain
- 2. Skin and soft tissue infection
- 2.1 Mild infection
- Preferred regimen (1): Ciprofloxacin 500 mg PO bid
- Preferred regimen (2): Levofloxacin 500 mg qd
- 2.2 Severe infection or sepsis
- Preferred regimen (1): Ciprofloxacin 400 mg IV q8h
- Preferred regimen (2): Levofloxacin 750 mg IV q24h
- Note (1): For suspicion of water-based injury,empiric coverage for Vibrio doxycycline 100 mg bid, although flouroquinolones may also cover and vancomycin 15 mg/kg IV q12h with or without clindamycin or linezolid for inhibition of gram-positive toxin production
- Note (2): Alternatives to fluoroquinolones for Aeromonas coverage include carbapenems (ertapenem, doripenem, imipenem or meropenem), ceftriaxone, cefepime and aztreonam
- 3. Prevention
- Preferred regimen: Frequent recommendations include using a Cephalosporin (e.g.,cefuroxime,ceftriaxone or cefixime) OR a Fluoroquinolone (e.g.,ciprofloxacin or levofloxacin) during treatment with medicinal leeches
- Note (1): Duration of antibiotic use is 3-5 days, some recommend continuing until wound or eschar resolves
- Note (2): Aeromonas isolates from leeches have been described as uniformly susceptible to fluoroquinolones

# Bartonella
- Bartonella Return to Top
- Bartonella
- 1. Bartonella quintana
- 1.1 Acute or chronic infections without endocarditis
- Preferred regimen: Doxycycline 200 mg PO qd or 100 mg bid for 4 weeks AND Gentamicin 3 mg/kg IV qd for the first 2 weeks
- 1.2 Endocarditis
- Preferred regimen: Gentamicin 3 mg/kg/day IV q8h for 14 days AND Ceftriaxone 2 g IV q24h for 6 weeks  Doxycycline 100 mg PO bid for 6 weeks
- 2. Bartonella elizabethae
- 2.1 Endocarditis
- Preferred regimen: Gentamicin 3 mg/kg/day IV q8h for 14 days AND  Ceftriaxone 2 g IV q24h for 6 weeks  Doxycycline 100 mg PO bid for 6 weeks
- 3. Bartonella bacilliformis
- 3.1 Oroya fever
- Preferred regimen: Ciprofloxacin 500 mg PO bid for 14 days
- Note: If severe disease, add Ceftriaxone 1 g IV qd for 14 days
- 3.2 Verruga peruana
- Preferred regimen: Azithromycin 500 mg PO qd for 7 days
- Alternative regimen (1): Rifampin 600 mg PO qd for 14-21 days
- Alternative regimen (2): Ciprofloxacin 500 mg bid for 7-10 days
- 4. Bartonella henselae
- 4.1 Cat scratch disease
- No treatment recommended for typical cat scratch disease, consider treatment if there is an extensive lymphadenopathy
- 4.1.1 If extensive lymphadenopathy
- Preferred regimen (1) (pediatrics): Azithromycin 500 mg PO on day 1 THEN 250 mg PO qd on days 2 to 5
- Preferred regimen (2) (adults): Azithromycin 1 g PO at day 1 THEN 500 mg PO for 4 days
- 4.2 Endocarditis
- Preferred regimen: Gentamicin 3 mg/kg/day IV q8h for 14 days AND  Ceftriaxone 2 g/day IV for 6weeks  Doxycycline 100 mg PO bid for 6 weeks
- 4.3 Retinitis
- Preferred regimen: Doxycycline 100 mg bid AND  Rifampin 300 mg bid PO for 4-6 weeks
- 4.4 Bacillary angiomatosis
- Preferred regimen (1): Erythromycin 500 mg PO qid for 2 months at least
- Preferred regimen (2): Doxycycline 100 mg PO bid for 2 months at least
- 4.5 Bacillary Pelliosis
- Preferred regimen (1): Erythromycin 500 mg PO qid  for 4 months at least
- Preferred regimen (2): Doxycycline 100 mg PO bid for 4 months at least

# Bordetella pertussis
- Bordetella pertussis Return to Top
- Bordetella pertussis
- 1. Whooping cough
- 1.1 Adults
- Preferred regimen (1): Azithromycin 500 mg PO single dose on day 1 THEN 250 mg PO qd on 2-5 days
- Preferred regimen (2): Erythromycin 2 g/day PO qid for 14 days
- Preferred regimen (3): Clarithromycin 1 g PO bid for 7 days.
- Alternative regimen (intolerant of macrolides): Trimethoprim 320 mg/day AND Sulfamethoxazole 1600 mg/day PO bid for 14 days
- 1.2 Infants <6 months of age
- 1.2.1 Infants <1 month
- Preferred regimen (1): Azithromycin 10 mg/kg PO qd for 5 days
- Preferred regimen (2) (if azithromycin unavailable): Erythromycin 40-50 mg/kg/day PO q6h for 14 days
- Note: TMP-SMX contraindicated for infants aged < 2 months
- 1.2.2 Infants of 1-5 months of age
- Preferred regimen (1): Azithromycin 10 mg/kg PO qd for 5 days
- Preferred regimen (2): Erythromycin 40-50 mg/kg/day PO qid for 14 days
- Preferred regimen (3): Clarithromycin 15 mg/kg PO bid for 7 days
- Alternative regimen: For infants aged  2 months TMP 8 mg/kg q24h AND SMX 40 mg/kg/day PO bid for 14 days
- 1.3 Infants 6 months of age-children
- Preferred regimen(1): Azithromycin 10 mg/kg single dose THEN 5 mg/kg (500 mg Maximum) qd for 2-5 days
- Preferred regimen(2): Erythromycin 40-50 mg/kg PO (2 g daily Maximum) qid for 14 days
- Preferred regimen(3): Clarithromycin 15 mg/kg PO (1 g daily Maximum) bid for 7 days
- Preferred regimen(4): TMP 8 mg/kg/day AND SMX 40 mg/kg/day bid for 14 days
- 2. Post exposure prophylaxis
- Preferred regimen: The antibiotic regimens for post exposure prophylaxis are similar to the regimens used for the treatment of pertussis
- Note (1):  Post exposure prophylaxis to an asymptomatic contacts within 21 days of onset of cough in the index patient can potentially prevent symptomatic infection
- Note (2): Close contacts include persons who have direct contact with respiratory, oral or nasal secretions from a symptomatic patient (eg: cough, sneeze, sharing food, eating utensils, mouth to mouth resuscitation, or performing a medical examination of the mouth, nose, throat.
- Note (3): Some close contacts are at high risk for acquiring severe disease following exposure to pertussis. These contacts include infants aged < 1 year , persons with some immunodeficiency conditions, or other underlying medical conditions such as chronic lung disease, respiratory insufficiency and cystic fibrosis.

# Burkholderia cepacia
- Burkholderia cepacia Return to Top
- Burkholderia cepacia complex
- Preferred regimen (1): Ceftazidime 2 g IV q8h
- Preferred regimen (2): Imipenem 1 g IV q6h
- Preferred regimen (3): Meropenem 1-2 g IV q8h
- Preferred regimen (4): Minocycline 100 mg IV/PO bid

# Burkholderia pseudomallei
- Burkholderia pseudomallei Return to Top
- Burkholderia pseudomallei
- 1. Melioidosis
- 1.1 Intial intensive therapy (Minimum of 10-14 days)
- Preferred regimen (1): Ceftazidime 50 mg/kg upto 2 g q6h
- Preferred regimen (2): Meropenem 25 mg/kg upto 1 g q8h
- Preferred regimen (3): Imipenem 25 mg/kg upto 1 g q6h
- Note: Any one of the three may be combined with TMP-SMX 6/30 mg/kg upto 320/1600 mg/kg q12h (recommended for neurologic, bone, joint, cutaneous and prostatic melioidosis)
- 1.2 Eradication therapy (Minimum of 3 months)
- Preferred regimen: TMP-SMX 6/30 mg/kg upto 320/1600 mg/kg q12h

# Campylobacter fetus
- Campylobacter fetus Return to Top
- Campylobacter fetus
- 1. Gastroenteritis
- Preferred regimen: Gentamicin 5 mg/kg IV q24h
- Alternative regimen (1): Ampicillin 100 mg/kg IV  q6h
- Alternative regimen (2): Imipenem 500 mg IV q6h
- Campylobacter jejuni Return to Top
- Campylobacter jejuni
- 1. Gastroenteritis
- Most patients donot require antibiotics and symptoms last < 1 week
- 1.1 Indications for the treatment
- Highfevers
- Bloodystools
- Prolonged illness > 1 week
- Pregnancy
- HIV and other immunosuppressed states
- 1.2 Treatment regimen 
- Preferred regimen (1):Erythromycin stearate 500 mg PO bid for 5 days
- Preferred regimen (2): Ciprofloxacin 500 mg PO bid for 35 days
- Alternative regimen (1): TMP-SMX DS PO bid for 35 days
- Note (1): Campylobacter resistance to TMP-SMX common in tropics
- Note (2): Extraintestinal infections should be treated for longer duration (e.g.,2-4 weeks)

# Capnocytophaga canimorsus
- Capnocytophaga canimorsus Return to Top
- Capnocytophaga canimorsus
- 1. Severe cellulitis/sepsis or endocarditis
- Preferred regimen (1) (Beta-lactam/beta-lactamase inhibitor): Ampicillin/sulbactam 3 g IV q6h
- Preferred regimen (2) (Non-beta-lactamase producing): Penicillin G 2-4 MU IV q24h
- Alternative regimen (1): Ceftriaxone 1-2 g IV q24h
- Alternative regimen (2): Meropenem 1 g IV q8h
- Alternative regimen (3) (complicated infections or immunocompromise): Clindamycin 600 mg IV q8h may be combined with above agents
- Note (1): Resistance to aztreonam described, and variable susceptibility reported to TMP-SMX and aminoglycosides
- Note (2): For endocarditis, alternatives to penicillins not well established, treated for duration of 6 weeks
- Note (3): For non-endocarditis infections, duration not well established, but most authorities recommend at least 14-21 days of therapy
- 2. Mild cellulitis/dog or cat bites
- Preferred regimen (1): Amoxicillin/clavulanate 500 mg PO q8h or 875 mg PO bid
- Preferred regimen (2): Amoxicillin 500 mg PO q8h
- Alternative regimen (1): Clindamycin 300 mg PO q6h
- Alternative regimen (2): Doxycycline 100 mg PO bid
- Alternative regimen (3): Clarithromycin 500 mg PO bid
- Alternative regimen (4): Moxifloxacin 400 mg PO qd
- 3. Meningitis or brain abscess
- Preferred regimen (1): Ceftriaxone 2 g IV q12h AND Ampicillin 2 g IV q4h
- Preferred regimen (2) (if beta-lactamase producing or polymicrobial brain abscess): Imipenem/Cilastin 1000 mg q6-8h AND Clindamycin 600 mg IV q8h
- 4. Prevention
- Although no firm data supports this recommendation, many clinicians do give prophylaxis for dog and cat bites in asplenic patients with Amoxicillin/clavulanate for 7-10 days.

# Citrobacter freundii
- Citrobacter freundii Return to Top
- Citrobacter freundii
- Preferred regimen (1): Meropenem 1-2 g IV q8h
- Preferred regimen (2): Imipenem 1 g IV q6h
- Preferred regimen (3): Doripenem 500 mg IV q8h
- Preferred regimen (4): Cefepime 1-2 g IV q8h
- Preferred regimen (5): Ciprofloxacin 400 mg IV q12h or 500 mg PO bid for UTI
- Preferred regimen (6): Gentamicin 5 mg/kg IV q24h
- Alternate regimen (1): Piperacillin-tazobactam 3.375 mg IV q6h
- Alternate regimen (2): Aztreonam 1-2 g IV q6h
- Alternate regimen (3): TMP-SMX 5 mg/kg q6h IV or DS PO bid for UTI
- Note: Usually carbenicillin sensitive, cephalothin resistant

# Citrobacter koseri
- Citrobacter koseri Return to Top
- Citrobacter koseri
- Preferred regimen (1): Ceftriaxone 1-2 g IV q12-24h
- Preferred regimen (2): Cefotaxime 1-2 g IV q6h
- Preferred regimen (3): Cefepime 1-2 IV q8h
- Alternate regimen (1): Ciprofloxacin 400 mg IV q12h or 500 mg PO q12h for UTI
- Alternate regimen (2): Imipenem 1 g IV q6h
- Alternate regimen (3): Doripenem 500 mg IV q8h
- Alternate regimen (4): Meropenem 1-2 g IV q8h
- Alternate regimen (5): Aztreonam 1-2 g IV q6h
- Alternate regimen (6): TMP-SMX 5 mg/kg IV q6h  or DS PO bid for UTI
- Note: Usually Ampicillin resistant, but may be sensitive to first generation cephalosporins
- Elizabethkingia meningoseptica Return to Top
- 1. Bacteremia
- Preferred regimen (1): Levofloxacin 750 mg IV/PO q24h
- Preferred regimen (2): TMP-SMX 810 mg/kg/day IV divided q68h
- Alternative regimen (1): Ciprofloxacin 400 mg IV q12h
- Alternative regimen (2): TMP-SMX 810 mg/kg/day IV divided q68h

# Enterobacter
- Enterobacter Return to Top
- Enterobacter species including E. aerogenes and E. cloacae
- 1. Empiric antimicrobial therapy pending in vitro susceptibility
- 1.1 Nonlife-threatening infections or MDR-GNB prevalence < 20%
- Preferred regimen: Piperacillin-Tazobactam 3.375 g IV q6h  Aminoglycosides
- Alternative regimen: Ciprofloxacin 400 mg IV q812h
- 1.2 Life-threatening infections or MDR-GNB prevalence > 20%
- Preferred regimen: Meropenem 0.51 g IV q8h
- Alternative regimen (1): Colistin AND Meropenem 0.51 g IV q8h
- Alternative regimen (2): Colistin AND Imipenem 500 mg IV q6h
- Alternative regimen (3): Colistin AND Doripenem 500 mg IV q8h
- Alternative regimen (4): Colistin AND Ertapenem 1 g IV q24h
- Alternative regimen (5): Colistin AND Fosfomycin 6 g IV q6h
- 2. In vitro susceptibility available
- 2.1 Susceptible to all tested agents
- Preferred regimen: Piperacillin-Tazobactam 3.375 g IV q6h
- Alternative regimen (1): Ciprofloxacin 400 mg IV q812h
- Alternative regimen (2): Cefepime 2 g IV q8h (if MIC  1 g/mL)
- 2.2 Extended spectrum beta-lactamase (ESBL)-producing Enterobacter spp.
- Preferred regimen: Meropenem 0.51 g IV q8h
- Alternative regimen (1): Imipenem 500 mg IV q6h
- Alternative regimen (2): Doripenem 500 mg IV q8h
- Alternative regimen (3): Ertapenem 1 g IV q24h
- Alternative regimen (4): Cefepime 2 g IV q8h (if MIC  1 g/mL)
- 2.3 Resistant to all tested agents
- Preferred regimen: Colistin AND Meropenem 0.51 g IV q8h
- Alternative regimen (1): Colistin AND Imipenem 500 mg IV q6h
- Alternative regimen (2): Colistin AND Doripenem 500 mg IV q8h
- Alternative regimen (3): Colistin AND Ertapenem 1 g IV q24h
- Alternative regimen (4): Colistin AND Minocycline 100 mg IV q12h

# Escherichia coli
- Escherichia coli Return to Top
- Escherichia coli
- 1. Meningitits
- Preferred regimen (1): Ceftriaxone 4 g IV q1224h
- Preferred regimen (2): Cefotaxime 812 g/day IV q46h
- Alternative regimen (1): Aztreonam 68 g/day IV q68h
- Alternative regimen (2): Gatifloxacin 400 mg/day IV q24h
- Alternative regimen (3): Moxifloxacin 400 mg/day IV q24h
- Alternative regimen (4): Meropenem 6 g/day IV q8h
- Alternative regimen (5): Trimethoprim-Sulfamethoxazole 1020 mg/kg/day IV q612h
- Alternative regimen (6): Ampicillin 12 g/day IV q4h
- 2. Uncomplicated urinary tract infection
- Preferred agents (IDSA/AUA Guidelines): TMP-SMX DS PO bid for 3 days
- Alternative regimen (1): Ciprofloxacin 250 mg PO bid
- Alternative regimen (2): Ciprofloxacin 500 mg XR qd for 3 days
- Alternative regimen (3): Levofloxacin 250 mg PO qd for 3 days.
- Alternative regimen (4): Nitrofurantoin 100 mg PO q6h
- Alternative regimen (5): Nitrofurantoin macrocrystals 100 mg PO bid for 7 days
- Alternative regimen (6): Fosfomycin 3 g sachet PO single dose
- Note: For older patients, those with comorbidities (e.g., diabetes mellitus) use 7-10 days course.
- 3. Pyelonephritis
- 3.1 Acute uncomplicated pyelonephritis
- Preferred regimen (1): Ciprofloxacin 500 mg bid PO for 5-7 days
- Preferred regimen (2): Ciprofloxacin-Erythromycin 1000 mg q24h
- Preferred regimen (3): Levofloxacin 750 mg q24h
- Preferred regimen (4): Ofloxacin 400 mg bid
- Preferred regimen (5): Moxifloxacin 400 mg q24h
- Alternative regimen (1): Amoxicillin-Clavulanic acid 875/125 mg PO q12h or 500/125 mg PO tid or 1000 /125 mg PO bid
- Alternative regimen (2): Oral Cephalosporins
- Alternative regimen (3): TMP-SMX 2 mg/kg IV q6h PO for 14 days
- 3.2 Acute pyelonephritis (Hospitalized)
- Preferred regimen (1): Ciprofloxacin 400 mg IV q12h
- Preferred regimen (2): Ampicillin and Gentamicin
- Preferred regimen (3): Piperacillin-Tazobactam 3.375 g IV q4-6h for 14 days
- Alternative regimen (1): Ticarcillin-Clavulanate 3.1 g IV q6h
- Alternative regimen (2): Ampicillin-Sulbactam 3 g IV q6h
- Alternative regimen (3): Piperacillin-Tazobactam 3.375 g IV q4-6h
- Alternative regimen (4): Ertapenem 1 g IV q24h
- Alternative regimen (5): Doripenem 500 mg q8h for 14 days
- 4. Travelers diarrhea
- 4.1 Prophylaxis
- Preferred regimen (1): Bismuth subsalicylate  two chewable tablets  qid
- Preferred regimen (2): Norfloxacin 400 mg PO qd
- Preferred regimen (3): Ciprofloxacin 500 mg PO qd
- Preferred regimen (4): Rifaximin 200 mg  PO qd or bid
- 4.2 Symptomatic treatment
- Preferred regimen (1): Bismuth subsalicylate 1 oz PO every 30 min for 8 doses
- Preferred regimen (2): Loperamide 4 mg PO then 2 mg after each loose stool not to exceed 16 mg daily
- 4.3 Antibiotic treatment
- Preferred regimen (1): Fluoroquinolones, Norfloxacin 400 mg PO bid
- Preferred regimen (2): Ciprofloxacin 500 mg PO bid
- Preferred regimen (3): Ofloxacin 200 mg PO bid
- Preferred regimen (4): Levofloxacin 500 mg PO qd
- Preferred regimen (5): Azithromycin 1000 mg PO single dose
- Preferred regimen (6): Rifaximin 200 mg PO tid
- 5. Malacoplakia
- Preferred regimen (1): Bethanechol chloride AND Ciprofloxacin 400 mg IV q12h
- Preferred regimen (2): Bethanechol chloride AND TMP-SMX 2 mg/kg (TMP component IV q6h)
- 6. Bacteremia/pneumonia
- Preferred regimen (1): Ceftriaxone 1-2 g IV q24h
- Preferred regimen (2): Ciprofloxacin 400 mg IV q12h or 500 mg PO q12h
- Preferred regimen (3): Levofloxacin 500 mg PO/IV q24h
- Preferred regimen (4): Moxifloxacin 400 mg IV/PO q24h
- Preferred regimen (5): Ampicillin 2 g IV q6h (if sensitive)
- Preferred regimen (6): TMP-SMX 5-10 mg/kg/day for q6-8h IV (if sensitive)
- Alternative regimen (1): Imipenem, Meropenem, Ertapenem, Doripenem; Ceftazidime, Cefepime; Cefazolin or Cefuroxime (if sensitive); Aztreonam; Ticarcillin, Piperacillin; Piperacillin-Tazobactam
- Alternative regimen (2): Ampicillin-sulbactam 3 g IV q6h AND (Gentamicin 1.5 mg/kg IV q8h or 5-7 mg/kg/day IV OR Tobramycin 5 mg/kg/day IV)
- Note (1): A 7- to 14-day course of antibiotic therapy is usually recommended.
- Note (2): The choice of antimicrobial agents should be based on susceptibility results.
- Note (3): Monotherapy with aminoglycosides is generally not recommended for bacteremia or pneumonia.

# Francisella tularensis
- Francisella tularensis Return to Top
- Francisella tularensis
- 1. Tularemia
- Preferred regimen (1): Streptomycin 1 g IM bid
- Preferred regimen (2): Gentamicin 5 mg/kg IV q24h for 10 days
- Preferred regimen (3) (pregnancy): Gentamicin 5 mg/kg IV q24h for 10 days
- Alternative regimen (1): Doxycycline 100 mg IV  bid
- Alternative regimen (2): Chloramphenicol 1 g IV q6h
- Alternative regimen (3): Ciprofloxacin 400 mg IV bid until stable THEN PO for 14-21 days (total)

# Helicobacter pylori
- Helicobacter pylori Return to Top
- 1. Peptic ulcer disease
- In patients aged 55 years or younger with no alarm features, two management options may be considered:
- 1.1 Indications for eradication therapy
- In moderate to high prevalence of H. pylori infection ( 10%): Test-and-treat strategy using a validated noninvasive test (urea breathing test or stool antigen test)
- In low prevalence situations: Treatment indicated after the empiric trial of acid suppression with a proton pump inhibitor for 48 weeks
- 1.2 Proton pump inhibitors (PPI)
- Preferred regimen (1): Lansoprazole 30 mg q12h
- Preferred regimen (2): Omeprazole 20 mg q12h
- Preferred regimen (3): Esomeprazole 40 mg q24h
- Preferred regimen (4): Rabeprazole 20 mg q12h
- 1.3 Regimens for Initial Treatment
- 1.3.1 Triple therapy
- Preferred regimen (1): Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid AND Clarithromycin 500 mg bid  for 7-14 days
- Preferred regimen (2): Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid AND Metronidazole 500 mg bid for 7-14 days
- Preferred regimen (3) (Levofloxacin triple therapy): Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid AND Levofloxacin 500 mg bid for 10 days
- Preferred regimen (4) (Rifabutin triple therapy): Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid AND Rifabutin 150-300 mg/day for 10 days
- 1.3.2 Quadruple therapy
- Preferred regimen (1): Proton pump inhibitor standard dose bid AND Metronidazole 250 mg q6h AND Tetracycline 500 mg q6h AND Bismuth (dose depends on preparation) for 10-14 days
- Preferred regimen (2) non-bismuth quadruple therapy (concomitant therapy): Proton pump inhibitor (standard dose twice daily) for 714 days AND Clarithromycin 500 mg bid for 714 days AND Amoxicillin 1 g bid for 10 days AND Metronidazole 250 mg qid for 714 days
- 1.3.3 Sequential therapy
- Preferred regimen: Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid for 1-5 days followed by Proton pump inhibitor standard dose bid AND Clarithromycin 500 mg bid AND Tinidazole 500 mg bid for 6-10 days
- Note: Alternative triple therapies appropriate for patients with an allergy to Amoxicillin include (Proton pump inhibitor and Clarithromycin and Metronidazole) or (Proton pump inhibitor and Tetracycline and Metronidazole)
- 1.5 Clarithromycin resistance
- 1.5.1 Clarithromycin resistance  20%
- Preferred regimen (1) (bismuth quadruple therapy): Proton pump inhibitor standard dose bid AND Metronidazole 250 mg q6h AND Tetracycline 500 mg q6h AND Bismuth (dose depends on preparation) for 10-14 days
- Preferred regimen (2) (sequential therapy): Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid for 1-5 days followed by Proton pump inhibitor standard dose bid AND Clarithromycin 500 mg bid AND Tinidazole 500 mg bid for 6-10 days
- Preferred regimen (3) non-bismuth quadruple therapy (concomitant therapy): Proton pump inhibitor (standard dose twice daily) for 714 days AND Clarithromycin 500 mg bid for 714 days AND Amoxicillin 1 g bid for 10 days AND Metronidazole 250 mg qid for 714 days
- Alternative regimen: Proton pump inhibitor standard dose bid AND Amoxicillin 1 g bid AND Levofloxacin 500 mg bid for 10 days
- 1.5.2 Clarithromycin resistance < 20%
- Preferred regimen (1): Proton pump inhibitor standard dose bid for 7-14 days AND Clarithromycin 500 mg bid for 714 days AND Amoxicillin  1 g bid for 714 days OR Metronidazole 250 mg qid for 714 days
- Preferred regimen (2): Proton pump inhibitor standard dose bid AND Metronidazole 250 mg q6h AND Tetracycline 500 mg q6h AND Bismuth (dose depends on preparation) for 10-14 days
- Alternative regimen (1):Proton pump inhibitor standard dose bid AND Metronidazole 250 mg q6h AND Tetracycline 500 mg q6h AND Bismuth (dose depends on preparation) for 10-14 days
- Alternative regimen (2): Proton pump inhibitor standard dose bid for 10 days AND Levofloxacin 500 mg bid for 10 days AND Amoxicillin 1 g bid for 10 days

# Klebsiella granulomatis
- Klebsiella granulomatis Return to Top
- Klebsiella granulomatis (formly known as Calymmatobacterium granulomatis)
- 1. Granuloma inguinale (donovanosis)
- Preferred regimen: Azithromycin 1 g PO once a week or 500 mg qd for 3 weeks THEN until all lesions have completely healed
- Alternative regimen (1): Doxycycline 100 mg PO bid for 3 weeks THEN until all lesions have completely healed
- Alternative regimen (2): Ciprofloxacin 750 mg PO bid for at least 3 weeks THEN until all lesions have completely healed
- Alternative regimen (3): Erythromycin base 500 mg PO qid for at least 3 weeks THEN until all lesions have completely healed
- Alternative regimen (4): Trimethoprim-sulfamethoxazole DS (160 mg/800 mg) tablet PO bid for at least 3 weeks THEN until all lesions have completely healed

# Klebsiella pneumoniae
- Klebsiella pneumoniae Return to Top
- Klebsiella pneumoniae
- 1. Severe, nosocomial infections
- 1.1 Non-ESBLs in pneumonia, sepsis, complicated UTI, or intra-abdominal infections
- Preferred regimen (1): Cefepime 2 g IV q8h
- Preferred regimen (2): Ceftazidime 2 g IV q8h
- Preferred regimen (3): Imipenem 500 mg IV q6h
- Preferred regimen (4): Meropenem 1 g IV q8h
- Preferred regimen (5): Piperacillin-tazobactam 4.5 g IV q6h AND Aminoglycoside
- Alternative regimen (1): Ceftriaxone 1 g IV q24h AND Metronidazole 500 mg IV q6h or 1 g IV q12h
- Alternative regimen (2): Moxifloxacin 400 mg IV/PO q24h
- 1.2 ESBLs in pneumonia, sepsis, complicated UTI, or intra-abdominal infections
- Preferred regimen (1): Imipenem 500 mg IV q6h
- Preferred regimen (2): Meropenem 1 g IV q8h
- Preferred regimen (3): Ertapenem 1 g IV q24h
- Preferred regimen (4): Doripenem 500 mg IV q8h
- Note: In ESBLs, inconsistent activity is seen with aminoglycosides, fluoroquinolones, and piperacillin-tazobactam. Avoid cephalosporins.

# Klebsiella rhinoscleromatis
- Klebsiella rhinoscleromatis Return to Top
- 1. Rhinoscleroma
- Preferred regimen (1): Ciprofloxacin 500750 mg PO bid for 23 months
- Preferred regimen (2): Levofloxacin 750 mg PO qd for 23 months
- Preferred regimen (3): Trimethoprim-Sulfamethoxazole 1 DS tab PO bid for 3 months AND Rifampicin 300 mg PO bid for 3 months
- Alternative regimen: Tetracycline OR Streptomycin OR Doxycycline  OR Ceftriaxone OR Ofloxacin
- Note (1): The optimal duration of antimicrobial therapy remains unclear. A 6-week to 6-month course of antibiotics until histology exams and cultures are negative may be required.
- Note (2): Use of topical antiseptics such as Acriflavinium and Rifampin ointment has been reported with resolution of symptoms.

# Legionella pneumophila
- Legionella pneumophila Return to Top
- 1.Atypical pneumonia (Legionnaires' disease )
- 1.1  Mild pneumonia inpatient or outpatient, non immunocompromised
- Preferred regimen (1): Azithromycin 500 mg PO qd for 3-5 days
- Preferred regimen (2): Levofloxacin 500 mg PO qd for 7-10 days
- Preferred regimen (3): Ciprofloxacin 500 mg PO bid for 7-10 days
- Preferred regimen (4): Moxifloxacin 400 mg PO qd for 7-10 days
- Preferred regimen (5): Clarithromycin 500 mg PO bid for 10-14 days
- Alternative regimen (1): Doxycycline 200 mg PO loading dose, then 100 mg PO bid for 10-14 days
- Alternative regimen (2): Erythromycin 500 mg PO qid for 10-14 days
- Note: Patients with mild disease may be treated entirely with oral therapy.
- 1.2 Moderate to severe pneumonia or immunocompromised
- Preferred regimen (1): Azithromycin 500 mg PO/IV  q24h for 5-7 days
- Preferred regimen (2): Levofloxacin 500 mg PO/IV q24h for 7-10 days OR 750 mg PO/IV q24h for 5-7 days
- Alternative regimen (1): Ciprofloxacin 750 mg PO bid for 14 days
- Alternative regimen (2): Moxifloxacin 400 mg PO qd for 14 days
- Alternative regimen (3): Erythromycin 750-1000 mg IV q6h for 3-7 days, then 500 mg PO qid for a total course of 21 days
- Alternative regimen (4): Clarithromycin 500 mg IV q12h for 3-7 days, and then 500 mg PO bid  for a total course of 21 days
- Note: Severely ill patients parenteral therapy is advised until improvement is seen and oral absorption is sufficient.
- 2 Pontiac fever
- Pontiac fever is febrile, self-limited form of Legionella infection which requires only symptomatic therapy, such as analgesics for headache. Antibiotics are not indicated.

# Moraxella catarrhalis
- Moraxella catarrhalis Return to Top
- Moraxella catarrhalis
- Preferred regimen (1): TMP-SMX 1DS PO bid
- Preferred regimen (2): Erythromycin 500 mg PO q6h
- Preferred regimen (3): Clarithromycin 500 mg bid or XL 1 g PO qd
- Preferred regimen (4): Azithromycin 500 mg single dose THEN 250 mg PO qd
- Preferred regimen (5): Doxycycline 100 mg PO/IV bid
- Preferred regimen (6): Parenteral cephalosporins such as Cefuroxime OR Cefotaxime OR Ceftriaxone
- Preferred regimen (7): Cefprozil 200-500 mg PO bid
- Preferred regimen (8): Cefpodoxime 200-400 mg PO bid
- Preferred regimen (9): Cefuroxime 250-500 mg PO bid
- Preferred regimen (10): Cefdinir 300 mg bid
- Preferred regimen (11): Moxifloxacin 400 mg IV/PO qd
- Preferred regimen (12): Levofloxacin 500 mg IV/PO qd
- Preferred regimen (13): Amoxicillin-Clavulanate 875/125 mg PO bid or XL 2000/125 PO bid

# Morganella morganii
- Morganella morganii Return to Top
- Morganella morganii
- Preferred regimen (1): Imipenem 500 mg IV q6h
- Preferred regimen (2): Meropenem 1.0 g IV q8h (adjust dose if necessary for renal function).
- Note (1): Carbapenems are considered first line therapy due to inducible cephalosporinases, and presence of extended-spectrum beta-lactamases in some isolates
- Note (2): Duration of treatment for UTI (generally complicated) is 7 days and duration of treatment for bacteremia is 14 days
- Note (3): Tigecycline is not reliably effective
- Alternative Regimen (1): Cefepime 2.0 g IV q8-12h
- Alternative Regimen (2): Ciprofloxacin 500 mg PO/400 mg IV q12h
- Alternative Regimen (3): Piperacillin 3 g IV q6h
- Alternative Regimen (4): Ticarcillin 3 g IV q4h
- Alternative Regimen (5): Gentamicin
- Alternative Regimen (6): Tobramycin 1 mg/kg IV q24h
- Alternative Regimen (7): Amikacin 3 mg/kg IV q24h
- Note: Aminoglycosides can be used alone for treatment of UTI

# Plesiomonas shigelloides
- Plesiomonas shigelloides Return to Top
- Plesiomonas shigelloides
- 1. Immunocompetent hosts or severe Infection
- Preferred regimen: Ciprofloxacin 500 mg PO bid or 400 mg IV q12h
- Alternative regimen (1): Ofloxacin 300 mg PO bid
- Alternative regimen (2): Norfloxacin 400 mg PO bid
- Alternative regimen (3): TMP-SMX DS PO bid for 3 days
- Alternative regimen (4): Ceftriaxone 1-2 g IV qd in severe cases
- 2. Immunocompromised hosts
- Preferred regimen: Ciprofloxacin 500 mg PO bid for 3 days
- Alternative regimen (1): Ofloxacin 300 mg PO bid
- Alternative regimen (2): Norfloxacin 400 mg PO bid
- Alternative regimen (3): TMP-SMX DS PO bid for 3 days if susceptible

# Proteus mirabilis
- Proteus mirabilis Return to Top
- Proteus mirabilis
- Preferred regimen (1): Ampicillin 500 mg PO q6h or 2 g IV q6h
- Preferred regimen (2): Cefuroxime 250 mg PO bid or 750 mg IV q8h
- Preferred regimen (3): Ciprofloxacin 250-500 mg PO bid or 400 mg IV q12h
- Preferred regimen (4): Levofloxacin 500 mg PO OD or 500 mg IV q24h
- Note: Duration of treatment for uncomplicated UTI 3 days, pyelonephritis 7-14 days, complicated UTI 10-21 days and bacteremia is 7-14 days

# Indole positive Proteus species
- Indole positive Proteus species
- Preferred regimen (1): Ceftriaxone 1 g IV q24h
- Preferred regimen (2): Imipenem 500 mg IV q6h
- Preferred regimen (3): Ciprofloxacin 400 mg IV q12h or 250-500 mg PO bid
- Preferred regimen (4): Levofloxacin 500 mg IV/PO q24h

# Providencia
- Providencia Return to Top
- Providencia
- 1. Complicated uti/bacteremia/acute prostatitis
- Preferred regimen (1): Ciprofloxacin 500-750 mg PO q12h or 400 mg IV q8-12h
- Preferred regimen (2): Levofloxacin 500 mg IV/PO q24h
- Preferred regimen (3): Piperacillin-Tazobactam 3.375 mg IV q6h
- Preferred regimen (4): Ceftriaxone 1-2 g IV q24h (donot use if ESBL suspected or critically ill)
- Preferred regimen (5): Meropenem 1 g IV q8h (consider if critically ill or ESBL suspected)
- Preferred regimen (6): Amikacin 7.5 mg/kg IV q12h
- Preferred regimen (7): Gentamicin
- Preferred regimen (8): Tobramycin acceptable if susceptible but many species are resistant
- Note (1): Duration of treatment for (UTI) is 7 days common or 3-5 days after defervescence or control/elimination of complicating factors (e.g.,removal of foreign material catheter).
- Note (2): Duration of treatment for (bacteremia) is 10-14 days or 3-5 days after defervescence or control/elimination of complicating factors
- Note (3): Duration for acute prostatitis (2 weeks), shorter than chronic prostatitis (4-6 weeks)
- Alternative regimen: TMP-SMX DS PO q12h for 10-14 days or TMP 5-10 mg/kg/day IV q6h

# Pseudomonas aeruginosa
- Pseudomonas aeruginosa Return to Top
- Pseudomonas aeruginosa
- Preferred regimen (1): Cefepime 2 g IV q8h
- Preferred regimen (2): Ceftazidime 2 g IV q8h
- Preferred regimen (3): Piperacillin 3-4 g IV q4h in (no benefit for pseudomonas from beta-lactamase inhibitor)
- Preferred regimen (4): Ticarcillin 3-4 g IV q4h (no benefit for pseudomonas from beta-lactamase inhibitor)
- Preferred regimen (5): Imipenem 500 mg1 g IV q6h
- Preferred regimen (6): Meropenem 1 g IV q8h
- Preferred regimen (7): Doripenem 500 mg IV q8h
- Preferred regimen (8): Ciprofloxacin 400 mg IV q8h or 750 mg PO q12h (for less serious infections)
- Preferred regimen (9): Aztreonam 2 g IV q6-8h
- Preferred regimen (10): Colistin 2.5 mg/kg IV q12h
- Preferred regimen (11): Polymyxin B 0.75-1.25 mg/kg IV q12h
- Preferred regimen (12): Gentamicin
- Preferred regimen (13): Tobramycin 1.7-2.0 mg/Kg IV q8h or 5-7 mg/kg IV
- Preferred regimen (14): Amikacin 2.5 mg/kg IV q12h
- Note: Amikacin > Tobramycin > Gentamicin with respect to P.aeruginosa susceptibility percentages at most institutions.

# Salmonella
- Salmonella Return to Top
- 1. Salmonellosis in immunocompetent hosts
- 1.1 Gastroenteritis
- Antimicrobial therapy is usually not recommended for uncomplicated diarrheal illness.
- 1.1.1 Indications for antimicrobial therapy
- severedisease,
- Age > 50 yrs
- Prosthesis
- Presence of valvular heart disease
- Severe atherosclerosis
- Cancer
- Uremia
- Immunosuppression
- 1.1.2 Treatment regimens
- Preferred regimen (1): TMP-SMX DS PO bid for 5-7 days
- Preferred regimen (2): Ciprofloxacin 500 mg PO bid for 5-7 days
- Preferred regimen (3): Ceftriaxone 2 g IV q24h for 5-7 days
- 1.2 Typhoid fever
- 1.2.1 Uncomplicated typhoid
- Preferred regimen (1) (fully susceptible): Fluoroquinolone (e.g., Ofloxacin 15 mg/kg PO qd for 57 days)
- Preferred regimen (2) (multi drug-resistant): Fluoroquinolone (Ofloxacin 15 mg/kg PO qd for 57 days)
- Preferred regimen (3) (quinolone-resistant): Azithromycin 810 mg/kg  PO qd for 7 days
- Preferred regimen (4) (quinolone-resistant): Fluoroquinolone 20 mg/kg PO qd for 10-14 days
- Alternative regimen (1) (fully susceptible): Chloramphenicol 5075 mg/kg PO qd for 14-21 days
- Alternative regimen (2) (fully susceptible): Amoxicillin 75100 mg/kg PO qd for 14 days
- Alternative regimen (3) (fully susceptible): TrimethoprimSulfamethoxazole, 8 mg/kg (trimethoprim) 40 mg/kg (sulfamethoxazole) PO qd for 14 days
- Alternative regimen (4) (multi drug-resistant): Azithromycin 810 mg/kg PO for 7 days
- Alternative regimen (5) (multi drug-resistant): Third-generation cephalosporin, e.g., Cefixime 20 mg/kg PO qd for 7-14 days
- Alternative regimen (6) (quinolone-resistant): Third-generation cephalosporin, e.g., Cefixime 20 mg/kg PO qd for 7-14 days
- 1.2.2 Severe typhoid
- Preferred regimen (1) (fully susceptible): Fluoroquinolone (e.g., Ofloxacin 15 mg/kg IV qd for 10-14 days)
- Preferred regimen (2) (multi drug-resistant): Fluoroquinolone (Ofloxacin 15 mg/kg IV qd for 10-14 days)
- Preferred regimen (3) (quinolone-resistant): Ceftriaxone 60 mg/kg IV qd for 10-14 days
- Preferred regimen (4) (quinolone-resistant): Cefotaxime 80 mg/kg IV qd for 10-14 days
- Alternative regimen (1) (fully susceptible): Chloramphenicol 100 mg/kg PO qd for 14-21 days
- Alternative regimen (2) (fully susceptible): Ampicillin 100 mg/kg PO qd for 14-21 days
- Alternative regimen (3) (fully susceptible): TrimethoprimSulfamethoxazole, 8 mg/kg (trimethoprim) 40 mg/kg (sulfamethoxazole) IV qd for 10-14 days
- Alternative regimen (4) (multi drug-resistant): Ceftriaxone 60 mg/kg IV qd for 10-14 days
- Alternative regimen (5) (multi drug-resistant): Cefotaxime 80 mg/kg IV qd for 10-14 days
- Alternative regimen (6) (quinolone-resistant): Fluoroquinolone 20 mg/kg IV qd for 10-14 days
- 1.3 Non-typhoid (serious infection)
- Preferred regimen (1): 3rd generation cephalosporin (Ceftriaxone/Cefotaxime)
- Preferred regimen (2): Fluoroquinolone (Ciprofloxacin, Levofloxacin)
- 1.4 Bacteremia
- Preferred regimen (1): Ceftriaxone 2 g IV q24h
- Preferred regimen (2): Cefotaxime 2 g IV q6-8h for 7-14 days
- Preferred regimen (3): Ciprofloxacin 400 mg IV q12h for 7-14 days
- 1.5 Vascular prosthesis infection
- Preferred regimen (1): Ceftriaxone
- Preferred regimen (2): Cefotaxime
- Preferred regimen (3): Ciprofloxacin 400 mg IV q12h for 6 weeks
- 1.6 Osteomyelitis
- Preferred regimen (1): Ceftriaxone 2 g IV q24h
- Preferred regimen (2): Cefotaxime 2 g IV q6-8h
- Preferred regimen (3): Ciprofloxacin 750 mg PO bid for  4 weeks
- 1.7 Arthritis
- Preferred regimen (1): Ceftriaxone 2 g IV q24h
- Preferred regimen (2): Cefotaxime 2 g IV q6-8h for 6 weeks
- 1.8 Endocarditis
- Preferred regimen (1): Ceftriaxone 2 g IV q24h
- Preferred regimen (2): Cefotaxime 2 g IV q6-8h for 6 weeks
- 1.9 UTI
- Preferred regimen (1): Ceftriaxone
- Preferred regimen (2): Cefotaxime
- Preferred regimen (3): Ciprofloxacin IV for 1-2 weeks THEN (oral Ciprofloxacin OR TMP-SMX for 6 weeks)
- 1.10 Carrier state
- Preferred regimen (1): Ciprofloxacin 500 mg PO bid for 4-6 weeks
- Preferred regimen (2): TMP-SMX 1DS bid PO for 6 weeks
- Preferred regimen (3): Amoxicillin 500 mg PO for 6 weeks
- 2. Salmonellosis in immunocompromised hosts
- 2.1 HIV and salmonellosis
- 2.1.1 Gastroenteritis
- Preferred regimen: Ciprofloxacin 500-750 mg PO bid or 400 mg IV q12h, if susceptible
- Alternative regimen (1): Levofloxacin 750 mg PO/IV q24h
- Alternative regimen (2): Moxifloxacin 400 mg PO/IV q24h
- Alternative regimen (3): TMP 160 mg AND SMX 800 mg PO/IV q12h
- Alternative regimen (4): Ceftriaxone 1 g IV q24h
- Alternative regimen (5): Cefotaxime 1 g IV q8h
- Duration of treatment for gastroenteritis without bacteremia
- If CD4 count  200 cells/L: Duration of treatment is 714 days
- If CD4 count < 200 cells/L: Duration of treatment is 26 weeks
- Duration of treatment for gastroenteritis with bacteremia
- If CD4 count  200/L: Duration of treatment is 14 days; longer duration if bacteremia persists or if the infection is complicated (e.g., if metastatic foci of infection are present)
- If CD4 count < 200 cells/L: Duration of treatment is 26 weeks
- Note: Secondary prophylaxis should be considered for
- Patients with recurrent Salmonella gastroenteritis with or without bacteremia
- Patients with CD4 < 200 cells/L with severe diarrhea

# Serratia marcescens
- Serratia marcescens Return to Top
- Serratia marcescens
- 1. Bacteremia, pneumonia or serious infections
- Preferred regimen (1): Cefepime 1-2 g IV q8h
- Preferred regimen (2): Imipenem 0.5-1.0 g IV q6h
- Preferred regimen (3): Ciprofloxacin 400 mg IV q8h
- Alternative regimen (1): Aztreonam
- Alternative regimen (2): Gentamicin
- Alternative regimen (3): Amikacin
- Alternative regimen (4): Piperacillin-tazobactam also often effective
- Note: Duration depends on clinical response, usually 7-14 days
- 2. Endocarditis
- Note: Choice dictated by sensitivities, 4 to 6 week duration of parenteral therapy.
- 3. Osteomyelitis
- Note (1): Choice dictated by sensitivity profile, treat for 6-12 weeks depending upon response.
- Note (2): Use IV treatment until stable/clinically improved (10-14 days Minimum) then may convert to oral therapy if appropriate.
- 4. UTI
- Preferred regimen (1): Ciprofloxacin 250 mg PO bid or 400 mg IV q12h
- Preferred regimen (2): Levofloxacin 250 mg PO qd or 500mg IV q24h
- Note: Fluoroquinolones often sensitive but in seriously ill patient consider empiric coverage with two drugs (e.g.,beta-lactam and aminoglycoside or fluoroquinolones and carbapenem) until susceptibilities known.

# Shigella
- Shigella Return to Top
- 1. Shigellosis 
- 1.1 Adults
- Preferred regimen (1): Ciprofloxacin 500 mg PO bid for 3 days
- Alternative regimen (1): Pivmecillinam 100 mg PO qid for 5 days
- Alternative regimen (2): Azithromycin 1-1.5 g PO qd for 1 to 5 days
- 1.2 Pediatrics
- Preferred regimen (1): Ciprofloxacin 15 mg/kg PO bid for 3 days
- Alternative regimen (1): Pivmecillinam 20 mg/kg PO qid for 5 days
- Alternative regimen (2): Ceftriaxone 50-100 mg/kg IM qd for 2 to 5 days
- Alternative regimen (3): Azithromycin 6-20 mg/kg PO qd for 1 to 5 days

# Stenotrophomonas maltophilia
- Stenotrophomonas maltophilia Return to Top
- Stenotrophomonas maltophilia
- Preferred treatment: TMP-SMX 15-20 mg/kg/day (TMP component) IV/PO q8h
- Alternative treatment (1): Ceftazidime 2 g IV q8h
- Alternative treatment (2): Ticarcillin-clavulanate 3.1 g IV q4h
- Alternative treatment (3): Tigecycline 100 mg IV single dose THEN 50 mg IV q12h
- Alternative treatment (4): Ciprofloxacin 500-750 mg PO /400 mg IV q12h
- Alternative treatment (5): Moxifloxacin 400 mg PO/IV
- Alternative treatment (6): Levofloxacin 750 mg PO/IV .
- Alternative treatment (7) (Multiply-resistantance): Colistin 2.5 mg/kg q12h IV
- Note: Treatment duration uncertain, but usually  14 days
- Vibrio cholerae Return to Top
- 1. WHO  
- Note: Antibiotic treatment for cholera patients with severe dehydration only
- Adults
- Preferred regimen: Doxycycline 300 mg po single dose
- Alternative regimen: Tetracycline 12.5 mg/kg PO qid for 3 days
- Pediatric
- Under 12 years old
- Preferred regimen: Erythromycin 12.5 mg/kg PO qid for 3 days
- Over 12 years old
- Preferred regimen: Doxycycline 300 mg po single dose
- Alternative regimen: Tetracycline 12.5 mg/kg PO qid for 3 days
- 2. Pan American Health Organization 
- Note: Antibiotic treatment for cholera patients with moderate or severe dehydration
- 2.1 Adult
- Preferred regimen: Doxycycline 300 mg po single dose
- Alternative regimen (1): Ciprofloxacin 1 g PO single dose
- Alternative regimen (2): Azithromycin 1 g PO single dose
- 2.2 Pediatric
- 2.2.1 Children over 3 year, who can swallow tablets
- Preferred regimen (1): Erythromycin 12.5 mg/kg/ PO qid for 3 days
- Preferred regimen (2): Azithromycin 20 mg/kg PO in a single dose
- Alternative regimen (1): Ciprofloxacin suspension or tablets 20 mg/kg PO single dose
- Alternative regimen (2): Doxycycline suspension or tablets 2-4 mg/kg PO single dose
- Note: Although doxycycline has been associated with a low risk of yellowing of the teeth in children, its benefits outweigh its risks
- 2.2.2 Children under 3 year, or infants who cannot swallow tablets
- Preferred regimen (1): Erythromycin suspension 12.5 mg/kg/ PO qid for 3 days
- Preferred regimen (2): Azithromycin suspension 20 mg/kg PO single dose
- Alternative regimen (1): Ciprofloxacin suspension 20 mg/kg PO single dose
- Alternative regimen (2): Doxycycline syrup 2-4 mg/kg PO single dose
- 2.3 Pregnancy
- Preferred regimen (!): Erythromycin 500 mg/ PO qid for 3 days
- Preferred regimen (2): Azithromycin 1 g PO single dose
- Vibrio parahaemolyticus Return to Top
- Vibrio parahaemolyticus 
- 1. Mild to Moderate
- Treatment is not necessary in most cases of V. parahaemolyticus infection
- There is no evidence that antibiotic treatment decreases the severity or the length of the illness
- Patients should drink plenty of liquids to replace fluids lost through diarrhea
- 2. Severe or prolonged illnesses
- Preferred regimen: Tetracycline OR Ciprofloxacin
- Vibrio vulnificus Return to Top
- Vibrio vulnificus 
- Note: If V. vulnificus is suspected, treatment should be initiated immediately because antibiotics improve survival
- Preferred regimen: Doxycycline 100 mg PO/IV bid for 7-14 days AND Ceftazidime 1-2 g IV/IM q8h
- Note: A single agent regimen with a fluoroquinolone such as Levofloxacin, Ciprofloxacin or Gatifloxacin, has been reported to be at least as effective in an animal model as combination drug regimens with Doxycycline and a Cephalosporin
- Pediatric regimen: Doxycycline AND Fluoroquinolones; trimethoprim-sulfamethoxazole AND an Aminoglycoside

### Bacteria  Atypical Organisms

# Chlamydophila pneumoniae
- Chlamydophila pneumoniae Return to Top
- 1. Atypical pneumonia 
- 1.1  Adult
- Preferred regimen (1): Doxycycline 100 mg PO bid for 14-21 days
- Preferred regimen (2): Tetracycline 250  mg PO qid for 14-21 days
- Preferred regimen (3): Azithromycin 500 mg PO as a single dose, followed by 250 mg PO qd for 4 days
- Preferred regimen (4): Clarithromycin 500 mg  PO bid for 10 days
- Preferred regimen (5): Levofloxacin 500 mg IV OR PO qd for 7 to 14 days
- Preferred regimen (6): Moxifloxacin 400 mg PO qd for 10 days.
- 1.2 Pediatric
- Preferred regimen (1): Erythromycin suspension PO 50 mg/kg/day for 10 to 14 days
- Preferred regimen (2): Clarithromycin suspension PO 15 mg/kg/day for 10 days
- Preferred regimen (3): Azithromycin suspension PO 10 mg/kg once on the first day, followed by 5 mg/kg qd daily for 4 days
- 2. Upper respiratory tract infection
- 2.1 Bronchitis
- Antibiotic therapy for C. pneumoniae is not required.
- 2.2 Pharyngitis
- Antibiotic therapy for C. pneumoniae is not required.
- 2.3 Sinusitis
- Antibiotic therapy is advisable if symptoms remain beyond 7-10 days.

# Chlamydia trachomatis
- Chlamydia trachomatis Return to Top
- 1 Chlaymydial infections 
- 1.1 Chlamydial Infections in Adolescents and Adults
- Preferred regimen (1): Doxycycline 100 mg PO bid for 7 days
- Preferred regimen (2): Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Erythromycin base 500 mg PO qid for 7 days
- Alternative regimen (2): Erythromycin ethylsuccinate 800 mg PO qid for 7 days
- Alternative regimen (3): Levofloxacin 500 mg PO qd for 7 days
- Alternative regimen (4): Ofloxacin 300 mg PO bid for 7 days.
- Note: Patients should be instructed to refer their sex partners for evaluation, testing, and treatment if they had sexual contact with the patient during the 60 days preceding onset of the patient's symptoms or chlamydia diagnosis.
- 1.2 Chlamydial Infections in patients with HIV Infection
- Preferred regimen (1): Doxycycline 100 mg PO bid for 7 days
- Preferred regimen (2): Azithromycin 1 g PO in a single dose
- Preferred regimen (3): Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Erythromycin base 500 mg PO qid for 7 days
- Alternative regimen (2): Erythromycin ethylsuccinate 800 mg PO  qid for 7 days
- Alternative regimen (3): Levofloxacin 500 mg  PO qd for 7 days
- Alternative regimen (4): Ofloxacin 300 mg PO bid for 7 days.
- 1.3 Pregancy
- Preferred regimen: Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Amoxicillin  500 mg PO tid for 7 days
- Alternative regimen (2): Erythromycin base 500 mg PO qid for 7 days
- Alternative regimen (3): Erythromycin base 250 mg PO  qid for 14 days
- Alternative regimen (4): Erythromycin ethylsuccinate 800 mg PO qid for 7 days
- Alternative regimen (5): Erythromycin ethylsuccinate 400 mg PO qid for 14 days
- Note:Doxycycline, Ofloxacin, and Levofloxacin are contraindicated in pregnant women
- 1.4 Management of sex partners
- Preferred regimen (1): Doxycycline 100 mg PO bid for 7 days
- Preferred regimen (2): Azithromycin 1 g PO in a single dose
- Alternative regimen (1): Erythromycin base 500 mg PO qid for 7 days
- Alternative regimen (2): Erythromycin ethylsuccinate 800 mg PO qid for 7 days
- Alternative regimen (3): Levofloxacin 500 mg  PO qd for 7 days
- Alternative regimen (4): Ofloxacin 300 mg PO bid for 7 days.
- Note (1): Recent sex partners (i.e., persons having sexual contact with the infected patient within the 60 days preceding onset of symptoms or Chlamydia  diagnosis) should be referred for evaluation, testing, and presumptive dual treatment.
- Note (2): If the patients last potential sexual exposure was >60 days before onset of symptoms or diagnosis, the most recent sex partner should be treated.
- Note (3): To avoid reinfection, sex partners should be instructed to abstain from unprotected sexual intercourse for 7 days after they and their sexual partner(s) have completed treatment and after resolution of symptoms, if present
- 2. Chlamydial infection among neonates
- 2.1 Ophthalmia Neonatorumcaused by C. trachomatis
- Preferred regimen: Erythromycin  base or ethylsuccinate 50 mg/kg/ day  PO qid for 14 days
- Alternative regimen: Azithromycin suspension 20 mg/kg /day PO qd for 3 days
- Note: The mothers of infants who have chlamydial infection and the sex partners of these women should be evaluated and treated.
- 2.2 Infant Pneumonia
- Preferred regimen: Erythromycin  base or ethylsuccinate 50 mg/kg/ day  PO qid for 14 days
- Alternative regimen: Azithromycin suspension 20 mg/kg /day PO qd for 3 days
- 3.Chlamydial infection among infants and childern
- 3.1 Infants and childern who weigh < 45 kg
- Preferred regimen: Erythromycin  base or ethylsuccinate 50 mg/kg/ day PO qid for 14 days
- 3.2 Infants and childern who weigh 45 kg but who are aged <8 years
- Preferred regimen: Azithromycin 1 g PO in a single dose
- 3.3 Infants and childern aged  8 years
- Preferred regimen (1): Azithromycin 1 g PO in a single dose
- Preferred regimen (2): Doxycycline 100 mg PO bid for 7 days
- 4. Lymphogranuloma venereum (LGV) 
- Preferred regimen: Doxycycline 100 mg PO bid for 21 days
- Alternative regimen: Erythromycin base 500 mg PO qid for 21 days
- Note (1): Azithromycin 1 g PO once weekly for 3 weeks is probably effective based on its chlamydial antimicrobial activity. Fluoroquinolone-based treatments might also be effective, but extended treatment intervals are likely required.
- Note (2): Pregnant and lactating women should be treated with Erythromycin. Azithromycin might prove useful for treatment of LGV in pregnancy, but no published data are available regarding its safety and efficacy. Doxycycline is contraindicated in pregnant women.
- Note (3): Persons with both LGV and HIV infection should receive the same regimens as those who are HIV negative. Prolonged therapy might be required, and delay in resolution of symptoms might occur.
- Note (4): Persons who have had sexual contact with a patient who has LGV within the 60 days before onset of the patients symptoms should be examined and tested for urethral, cervical, or rectal chlamydial infection depending on anatomic site of exposure. They should be presumptively treated with a chlamydia regimen ( Azithromycin 1 g PO single dose OR Doxycycline 100 mg PO bid for 7 days).

# Chlamydophila psittaci
- Chlamydophila psittaci Return to Top
- 1. ' Psittacosis 
- 1.1 Adult
- Preferred regimen (1): Doxycycline 100 mg PO bid for 10-21 days
- Preferred regimen (2): Tetracycline 500  mg PO qid for 10-21 days
- Alternative regimen: Minocycline
- 1.2 Pediatric
- 1.2.1 Mild infection, Infants >3 months
- Preferred regimen: Azithromycin  10 mg/kg PO qd on day 1 THEN 5 mg/kg PO q24h  for 4 days; (Maximum, 500 mg for 1st dose, 250 mg for subsequent doses)
- 1.2.2 Moderate-severe infection, Infants  >3 months
- Preferred regimen: Azithromycin  10 mg/kg IV q24h for 2 days THEN 5 mg/kg PO qd for 3 days; (Maximum, 500 mg/dose IV; 250 mg/dose PO)
- 1.3 Pregnant Patients
- Preferred regimen: Azithromycin  500 mg PO on day 1 THEN by 250 mg qd on days 2-5  OR  500 mg  IV as a single dose for at least 2 days, followed by 500 mg  PO qd  for 7- 10 days

# Coxiella burnetii
- Coxiella burnetii Return to Top
- 1. Acute Q fever 
- 1.1 Adults
- Preferred Regimen: Doxycycline 100 mg PO bid for 14 days
- 1.2 Pediatric
- 1.2.1  8 years old
- Preferred regimen:Doxycycline 2.2 mg/kg PO bid for 14 days (Maximum, 100 mg per dose)
- 1.2.2 < 8 years old with high risk criteria
- Preferred regimen:Doxycycline 2.2 mg/kg PO bid for 14 days (Maximum, 100 mg per dose)
- 1.2.3 < 8 years old with mild or uncomplicated illness
- Preferred regimen:Doxycycline 2.2 mg/kg PO bid for 5 days (Maximum, 100 mg per dose)
- Alternative regimen: (If patient remains febrile past 5 days of treatment) Trimethoprim/Sulfamethoxazole 4-20 mg/kg PO bid for 14 days (Maximum, 800 mg per dose)
- 1.3 Pregnant women
- Preferred regimen: Trimethoprim/sulfamethoxazole 160 mg/800 mg PO bid
- Note: Should be given throughout pregnancy
- 2. Chronic Q fever
- 2.1 Endocarditis or vascular infection
- Preferred regimen: Doxycycline 100 mg PO bid AND hydroxychloroquine 200 mg PO tid for 18 months
- Note: Childern and pregnant women consultation recommended
- 2.2 Non-cardiac organ disease
- Preferred regimen: Doxycycline 100 mg PO bid AND hydroxychloroquine 200 mg PO tid
- Note: childern and pregnant women consultation recommended
- 2.3 Postpartumwith serologic profile for chronic Q fever
- Preferred regimen: Doxycycline 100 mg PO bid AND hydroxychloroquine 200 mg PO tid for 12 months
- Note (1): Women should only be treated postpartum if serologic titers remain elevated >12 months after delivery (immunoglobulin G phase I titer 1:1024); Women treated during pregnancy for acute Q fever should be monitored similarly to other patients who are at high risk for progression to chronic disease (e.g., serologic monitoring at 3, 6, 12, 18, and 24 months after delivery)
- Note (2): Post-Q fever fatigue syndrome- no current recommendation

# Mycoplasma pneumoniae
- Mycoplasma pneumoniae Return to Top
- 1. Atypical pneumonia
- Preferred regimen (1): Azithromycin 500 mg PO qd on day 1 and 250 mg PO qd on days 2 to 5
- Preferred regimen (2): Clarithromycin 500 mg PO qd for 14 days
- Preferred regimen (3): Moxifloxacin 400 mg PO qd for 14 days
- Preferred regimen (4): Levofloxacin 750 mg PO qd for 14 days
- Alternative regimen : Doxycycline 100 mg PO bid for 14 days

# Mycoplasma genitalium
- Mycoplasma genitalium Return to Top
- 1. Urethritis and cervicitis
- Preferred regimen (macrolide-susceptible strains) (1): Azithromycin 1 g PO as a single dose
- Preferred regimen (macrolide-susceptible strains) (2): Azithromycin 500 mg PO as a dose followed by 250 mg PO qd for 4 days
- Preferred regimen (for patients with previous treatment failures): Moxifloxacin 400 mg PO qd for 714 days
- 2. Pelvic inflammatory disease (PID)
- Preferred regimen: Moxifloxacin 400 mg PO qd for 14 days
- 3. Specific considerations
- 3.1 Management of sex partners
- Sex partners should be managed according to guidelines for patients with nongonococcal urethritis, cervicitis, and pelvic inflammatory disease.
- 3.2 HIV infection
- Persons who have an M. genitalium infection and HIV infection should receive the same treatment regimen as those who are HIV negative.

### Bacteria  Miscellaneous
- Gardnerella vaginalis Return to Top
- 1.Bacterial Vaginosis
- Gardnerella vaginalis is one of the anaerobic bacteria causing Bacterial Vaginosis,which is a polymicrobial clinical syndrome
- Preferred regimen (1): Metronidazole 500 mg PO bid for 7 days
- Preferred regimen (2): Metronidazole gel 0.75%, one full applicator (5 g) intravaginally, qd for 5 days
- Preferred regimen (3): Clindamycin cream 2%, one full applicator (5 g) intravaginally at bedtime for 7 days
- Alternative regimen (1): Tinidazole 2 g PO qd for 2 days
- Alternative regimen (2): Tinidazole 1 g  PO qd for 5 days
- Alternative regimen (3): Clindamycin 300 mg  PO bid for 7 days
- Alternative regimen (4): Clindamycin ovules 100 mg intravaginally once at bedtime for 3 days
- Note: Clindamycin ovules use an oleaginous base that might weaken latex or rubber products (e.g., condoms and vaginal contraceptive diaphragms). Use of such products within 72 hours following treatment with clindamycin ovules is not recommended.
- 2. Management of Sex Partners
- Routine treatment of sex partners is not recommended.
- 3. Special Considerations
- 3.1 Allergy, Intolerance, or Adverse Reactions
- Intravaginal Clindamycin cream is preferred in case of allergy or intolerance to Metronidazole or Tinidazole. Intravaginal Metronidazole gel can be considered for women who are not allergic to Metronidazole but do not tolerate oral metronidazole. It is advised to avoid consuming alcohol during treatment with nitroimidazoles. To reduce the possibility of a disulfiram-like reaction, abstinence from alcohol use should continue for 24 hours after completion of metronidazole or 72 hours after completion of tinidazole.
- 3.2  Pregnancy
- Preferred regimen (1): Metronidazole 500 mg PO bid for 7 days
- Preferred regimen (2): Metronidazole gel 0.75%, one full applicator (5 g) intravaginally, qd for 5 days
- Note: Tinidazole should be avoided during pregnancy
- 3.3 HIV Infection
- Women with HIV who have BV should receive the same treatment regimen as those who do not have HIV infection.
- Eikenella corrodens Return to Top
- Bordetella pertussis Return to Top
- Bartonella Return to Top
- Stenotrophomonas maltophilia Return to Top
- Acinetobacter baumannii Return to Top
- Yersinia enterocolitica Return to Top
- Yersinia enterocolitica infection (yersiniosis)
- 1. Enterocolitis and mesenteric adenitis
- Preferred regimen: Enterocolitis and adenitis usually self-limited.  No antibiotic therapy is required unless clinically indicated.
- 2. Septicemia
- Preferred regimen (1): Doxycycline 100 mg IV q12h AND Tobramycin 5 mg/kg IV q24h
- Preferred regimen (2): Doxycycline 100 mg IV q12h AND Gentamicin 5 mg/kg IV q24h
- Alternative regimen (1): Ciprofloxacin 500 mg IV q12h
- Alternative regimen (2): TMP-SMX TMP 8 mg/kg/day and SMX 40 mg/kg/day IV q12h
- 3. Peritonitis
- Preferred regimen: Fluoroquinolones
- Yersinia pestis Return to Top
- Yersinia pseudotuberculosis Return to Top

### Bacteria  Anaerobic Gram-Negative Bacilli
- Bacteroides fragilis Return to Top
- Bacteroides fragilis 
- 1. Monotherapy
- Preferred regimen (1): Imipenem
- Preferred regimen (2): Ertapenem
- Preferred regimen (3): Meropenem
- Preferred regimen (4): Doripenem 0.5-1.0 g IV q6h
- Preferred regimen (5): Piperacillin-tazobactam 3.375 g IV q6h
- Preferred regimen (6): Ampicillin-sulbactam 1-2 g IV q6h
- Preferred regimen (7): Tigecycline 100 mg IV THEN 50 mg IV q12h
- 2. Combination therapy
- Preferred regimen: Metronidazole 0.75-1.0 g IV q12h AND Cefotaxime 1.5-2 g IV q6h OR Aztreonam 1-2 g IV q8h OR Ceftriaxone 1 g IV q12h
- Fusobacterium necrophorum Return to Top

### Fungi
- Aspergillosis Return to Top
- 1. Invasive pulmonary aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- 2. Invasive sinus aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- 3. Tracheobronchial aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- 4. Chronic necrotizing pulmonary aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- 5. Aspergillosis of the CNS
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: There are drug interactions with anticonvulsant therapy.
- 6. Aspergillus infections of the heart (endocarditis, pericarditis, and myocarditis)
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: endocardial lesions generally require surgical treatment. Aspergillus pericarditis usually requires pericardiectomy.
- 7. Aspergillus osteomyelitis and septic arthritis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: Surgical resection of devitalized bone and cartilage is important for curative intent.
- 8. Aspergillus infections of the eye (endophthalmitis and keratitis)
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: Topical therapy is indicated for keratitis, ophthalmologic intervention and management is recommended for all forms of ocular infection. Systemic therapy may be beneficial when treating aspergillus endophthalmitis.
- 9. Cutaneous aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: Surgical resection is indicated when feasible.
- 10. Aspergillus peritonitis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- 11. Prophylaxis against invasive aspergillosis
- Preferred regimen: Posaconazole PO 200 mg tid
- Alternative regimen: (1) Itraconazole 200 mg IV bid for 2 days then 200 mg IV qd OR Itraconazole PO 200mg bid
- Alternative regimen: (2) Micafungin 50 mg/day PO qd
- 12. Aspergilloma
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen: Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- 13. Chronic cavitary pulmonary aspergillosis
- Preferred regimen: Voriconazole 6 mg/kg IV q12h single dose, THEN 4 mg/kg IV q12h or PO 200 mg q12h
- Alternative regimen (1): Liposomal Amphotericin B (L-AMB) 35 mg/kg/day IV qd
- Alternative regimen (2): Amphotericin B lipid complex (ABLC) 5 mg/ kg/day IV qd
- Alternative regimen (3): Caspofungin 70 mg IV single dose THEN 50 mg/day IV qd
- Alternative regimen (4): Posaconazole 200 mg PO qid if patient is critical, then 400 mg PO bid after stabilization of the disease.
- Alternative regimen (5): Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (6): Micafungin 100150 mg/day PO qd
- Note: Micafungin has been evaluated as salvage therapy for invasive aspergillosis but remains investigational for this indication, and the dosage has not been established.
- Note: long-term therapy might be needed.
- 14. Allergic bronchopulmonary Itraconazole aspergillosis
- Preferred regimen: Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Alternative regimen (1): Voriconazole PO 200 mg bid
- Alternative regimen (2): Posaconazole PO 400 mg bid
- Note: Corticosteroids are a cornerstone of the therapy.
- 15. Allergic aspergillus sinusitis
- Preferred regimen: None or Itraconazole dosage depends upon formulation - 600 mg/day PO for 3 days, THEN 400 mg/day PO OR 200 mg q12h IV for 2 days, THEN 200 mg IV qd
- Note: Few data available for other agents.
- 16. Relative indications for surgical treatment of invasive aspergillosis
- Pulmonary lesion in proximity to great vessels or pericardium;
- Pericardial infection;
- Invasion of chest wall from contiguous pulmonary lesion;
- Aspergillus empyema;
- Persistent hemoptysis from a single cavitary lesion;
- Infection of skin and soft tissues;
- Infected vascular catheters and prosthetic devices;
- Endocarditis;
- Osteomyelitis;
- Sinusitis;
- Cerebral lesions.
- Blastomycosis Return to Top
- Blastomycosis
- 1. Mild to moderate pulmonary blastomycosis
- Preferred regimen: Itraconazole 200 mg PO qd or bid for 612 months
- Note: Oral Itraconazole, 200 mg tid PO for 3 days and THEN 200 mg PO qd or bid for 612 months
- 2. Moderately severe to severe pulmonary blastomycosis
- Preferred regimen (1): Lipid Amphotericin B 35 mg/kg IV qd for 12 weeks AND Itraconazole 200 mg PO bid for 612 months
- Preferred regimen (2): Amphotericin B deoxycholate 0.71 mg/kg IV qd for 12 weeks AND Itraconazole 200 mg PO bid for 612 months
- Note: Oral Itraconazole, 200 mg tid PO for 3 days THEN 200 mg PO bid, for a total of 612 months
- 3. Mild to moderate disseminated blastomycosis
- Preferred regimen: Itraconazole 200 mg PO qd or bid for 612 months
- Note (1): Treat osteoarticular disease for 12 months
- Note (2): Oral Itraconazole, 200 mg PO tid for 3 days THEN 200 mg PO bid, for 612 months
- 4. Moderately severe to severe disseminated blastomycosis
- Preferred regimen (1): Lipid Amphotericin B 35 mg/kg IV qd, for 12 weeks AND Itraconazole 200 mg PO bid for 612 months
- Preferred regimen (2): Amphotericin B deoxycholate 0.71 mg/kg IV qd, for 12 weeks AND Itraconazole 200 mg PO bid for 612 months
- Note: oral Itraconazole, 200 mg PO tid for 3 days THEN 200 mg PO bid, for 612 months
- 5. CNS disease
- Preferred regimen: Lipid Amphotericin B 5 mg/kg IV qd for 46 weeks AND an oral azole for at least 1 year
- Note (1): Step-down therapy can be with Fluconazole, 800 mg/day PO qd or bid OR Itraconazole, 200 mg bid or tid OR voriconazole, 200400 mg bid.
- Note (2): Longer treatment may be required for immunosuppressed patients.
- 6. Immunosuppressed patients
- Preferred regimen (1): Lipid Amphotericin B 35 mg/kg IV qd, for 12 weeks, AND Itraconazole, 200 mg PO bid for 12 months
- Preferred regimen (2): Amphotericin B deoxycholate, 0.71 mg/kg IV qd, for 12 weeks, AND Itraconazole, 200 mg PO bid for 12 months
- Note (1): Oral Itraconazole, 200 mg PO tid for 3 days THEN 200 mg PO bid, for 12 months
- Note (2): Life-long suppressive treatment may be required if immunosuppression cannot be reversed.
- 7. Pregnant women
- Preferred regimen: Lipid Amphotericin B 35 mg/kg IV qd
- Note (1): Azoles should be avoided because of possible teratogenicity
- Note (2): If the newborn shows evidence of infection, treatment is recommended with Amphotericin B deoxycholate, 1.0 mg/kg IV qd
- 8. Children with mild to moderate disease
- Preferred regimen: Itraconazole 10 mg/kg PO qd for 612 months
- Note: Maximum dose 400 mg/day
- 9. Children with moderately severe to severe disease
- Preferred regimen (1): Amphotericin B deoxycholate 0.71 mg/kg IV qd for 12 weeks AND Itraconazole 10 mg/kg PO qd to a maximum of 400 mg/day for 612 months
- Preferred regimen (2): Lipid amphotericin B (Lipid AmB) 35 mg/kg IV qd for 12 weeks AND Itraconazole 10 mg/kg PO qd to a maximum of 400 mg/day for 612 months
- Note: Children tolerate Amphotericin B deoxycholate better than adults do.
- Paracoccidioidomycosis Return to Top
- Preferred regimen (1): 
- Adults: Itraconazole 200 mg/day PO
- Children: Itraconazole (5 yr) 5-10 mg/kg/day PO
- Note: Treatment duration based on organ involvement:
- Mild involvement: 6-9 months
- Moderate involvement: 12-18 months
- Preferred regimen (2): 
- Adults Trimethoprim/sulfamethoxazole (TMP/SMX)  TMP: 160-240 mg/day PO/IV, SMX: 800-1200 mg/day PO/IV bid
- Children Trimethoprim/sulfamethoxazole (TMP/SMX) TMP: 8-10 mg/kg PO/IV, SMX: 40-50 mg/kg PO/IV, bid
- Note (1): Treatment duration based on organ involvement:
- Minor involvement: 12 months
- Moderate involvement: 18-24 months
- Note (2): Preferred treatment in children due to larger experience.
- Note (3): Preferred in IV formulation in severe forms of the disease - 2 ampules IV tid until patient condition improves so that oral medication can be given.
- Preferred regimen (3): Amphotericin B deoxycholate 1 mg/kg/day IV until patient improves and can be treated by the oral route.
- Note: Preferred in severe forms of the disease.
- Alternative regimen (4): Ketoconazole 200-400 mg/day PO for 9-12 months
- Alternative regimen (5): Voriconazole initial dose 400 mg PO/IV q12h for one day, then 200 mg q12h for 6 months
- Note: Diminish the dose to 50% if weight is <40 kg.
- Candidiasis Return to Top
- 1. Candidemia
- 1.1. Nonneutropenic adults
- Preferred regimen (1): Fluconazole 800 mg (12 mg/kg) loading dose, THEN 400 mg (6 mg/kg) qd
- Preferred regimen (2): Caspofungin 70 mg loading dose, THEN 50 mg qd
- Preferred regimen (3): Micafungin 100 mg qd
- Preferred regimen (4): Anidulafungin 200 mg loading dose, THEN 100 mg qd
- Alternative regimen (1): Lipid formulation of amphotericin B(LFAmB) 35 mg/kg qd
- Alternative regimen (2): Amphotericin B deoxycholate(AmB-d) 0.51.0 mg/kg qd
- Alternative regimen (3): Voriconazole 400 mg (6 mg/kg) PO/IV bid for 2 doses, THEN 200 mg (3 mg/kg) bid
- Note (1): Echinocandin includes Anidulafungin, Micafungin and Caspofungin.
- Note (2): Choose an echinocandin for moderately severe to severe illness and for patients with recent azole exposure.
- Note (3): Treat for 14 days after first negative blood culture result and resolution of signs and symptoms associated with candidemia.
- Note (4): Ophthalmological examination recommended for all patients.
- 1.2. Neutropenic patients
- Preferred regimen (1): Caspofungin 70 mg loading dose, THEN 50 mg qd
- Preferred regimen (2): Micafungin 100 mg qd
- Preferred regimen (3): Anidulafungin 200 mg loading dose, THEN 100 mg qd
- Preferred regimen (4): Lipid formulation of Amphotericin B (LFAmB) 35 mg/kg qd
- Alternative regimen (1): Fluconazole 800 mg (12 mg/kg) loading dose, THEN 400 mg (6 mg/kg) qd
- Alternative regimen (2): Voriconazole 400 mg (6 mg/kg) bid for 2 doses, THEN 200 mg (3 mg/kg) bid
- Note: Fluconazole is recommended for patients without recent azole exposure and who are not critically ill.
- 2. Suspected candidiasis treated with empiric antifungal therapy
- 2.1. Nonneutropenic patients
- Preferred regimen (1): Fluconazole 800 mg (12 mg/kg) loading dose, THEN 400 mg (6 mg/kg) daily
- Preferred regimen (2): Caspofungin 70 mg loading dose, THEN 50 mg daily
- Preferred regimen (3): Micafungin 100 mg daily
- Preferred regimen (4): Anidulafungin 200 mg loading dose, THEN 100 mg daily
- Alternative regimen (1): Lipid formulation of amphotericin B(LFAmB) 35 mg/kg daily
- Alternative regimen (2): Amphotericin B deoxycholate(AmB-d) 0.51.0 mg/kg daily
- Note (1): Duration of therapy is uncertain, but should be discontinued if cultures and/or serodiagnostic tests have negative results.
- Note (2): Echinocandin includes Anidulafungin, Micafungin and Caspofungin.
- Note (3): Echinocandin is preferred for patients with recent azole exposure, patients with moderately severe to severe illness, or patients who are at high risk of infection due to C. glabrata or C. krusei.
- Note (4): Empirical antifungal therapy should be considered in critically ill patients with risk factors for invasive candidiasis and no other known cause of fever and should be based on clinical assessment of risk factors, serologic markers for invasive candidiasis, and/or culture data from nonsterile sites
- 2.2. Neutropenic patients
- Preferred regimen (1): Lipid formulation of amphotericin B(LFAmB) 35 mg/kg daily
- Preferred regimen (2): Caspofungin 70 mg loading dose, THEN 50 mg daily
- Preferred regimen (3): Voriconazole 400 mg (6 mg/kg) bid for 2 doses, THEN 200 mg (3 mg/kg) bid
- Alternative regimen (1): Fluconazole 800 mg (12 mg/kg) loading dose, THEN 400 mg (6 mg/kg) daily
- Alternative regimen (2): Itraconazole 200 mg (3 mg/ kg) bid
- Note (1): In most neutropenic patients, it is appropriate to initiate empiric antifungal therapy after 4 days of persistent fever despite antibiotics.
- Note (2): Do not use an azole in patients with prior azole prophylaxis.
- 3. Urinary tract infection
- 3.1. Asymptomatic cystitis
- Preferred regimen: Therapy not usually indicated, unless patients are at high risk (e.g., neonates and neutropenic adults) or undergoing urologic procedures.
- Note (1): Elimination of predisposing factors recommended
- Note (2): For high-risk patients, treat as for disseminated candidiasis
- Note (3): For patients undergoing urologic procedures, fluconazole, 200400 mg (36 mg/kg) daily or Amphotericin B deoxycholate (AmB-d) 0.30.6 mg/kg daily for several days before and after the procedure.
- 3.2. Symptomatic cystitis
- Preferred regimen: Fluconazole 200 mg (3 mg/kg) daily for 2 weeks
- Alternative regimen (1): Amphotericin B deoxycholate(AmB-d) 0.30.6 mg/kg for 17 days
- Alternative regimen (2): Flucytosine 25 mg/kg qid for 710 days
- Note: Amphotericin B deoxycholate (AmB-d) bladder irrigation is recommended only for patients with refractory fluconazole -resistant organisms (e.g., Candida krusei and Candida glabrata).
- 3.3 Pyelonephritis
- Preferred regimen (1): Fluconazole 200400 mg (36 mg/kg) daily for 2 weeks
- Alternative regimen (1): Amphotericin B deoxycholate(AmB-d) 0.50.7 mg/kg daily  Flucytosine (5-FC) 25 mg/kg qid
- Alternative regimen (2): Flucytosine (5-FC) 25 mg/kg qid for 2 weeks
- Note: For patients with pyelonephritis and suspected disseminated candidiasis, treat as for candidemia.
- 4. Urinary fungus balls
- Preferred regimen (1): Surgical removal strongly recommended
- Preferred regimen (2): Fluconazole 200400 mg (36 mg/kg) daily
- Preferred regimen (3): Amphotericin B deoxycholate(AmB-d) 0.50.7 mg/kg daily  Flucytosine (5-FC) 25 mg/kg qid
- Note (1): Local irrigation with Amphotericin B deoxycholate(AmB-d) may be a useful adjunct to systemic antifungal therapy.
- Note (2):  Treatment duration should be until symptoms have resolved and urine cultures no longer yield Candida species.
- 5. Vulvovaginal candidiasis
- Preferred regimen (1): Butoconazole 2% cream 5 g intravaginally for 3 days
- Preferred regimen (2): Butoconazole 2% cream 5 g (butoconazole1-sustained release), single intravaginal application
- Preferred regimen (3): Clotrimazole 1% cream 5 g intravaginally for 714 days
- Preferred regimen (4): Clotrimazole 100-mg vaginal tablet for 7 days
- Preferred regimen (5): Clotrimazole 100-mg vaginal tablet, 2 tablets for 3 days
- Preferred regimen (6): Miconazole 2% cream 5 g intravaginally for 7 days
- Preferred regimen (7): Miconazole 100-mg vaginal suppository, 1 suppository for 7 days
- Preferred regimen (8): Miconazole 200-mg vaginal suppository, 1 suppository for 3 days
- Preferred regimen (9): Miconazole 1200-mg vaginal suppository, 1 suppository for 1 day
- Preferred regimen (10): Nystatin 100,000-unit vaginal tablet, 1 tablet for 14 days
- Preferred regimen (11): Tioconazole 6.5% ointment 5 g intravaginally in a single application
- Preferred regimen (12): Terconazole 0.4% cream 5 g intravaginally for 7 days
- Preferred regimen (13): Terconazole 0.4% cream 5 g intravaginally for 3 days
- Preferred regimen (14): Terconazole 80-mg vaginal suppository, 1 suppository for 3 days
- Preferred regimen (15): Fluconazole 150 mg single dose for uncomplicated vaginitis
- Note: For recurring Candida Vulvovaginal candidiasis (VVC), 1014 days of induction therapy with a topical or oral azole, followed by fluconazole at a dosage of 150 mg once per week for 6 months, is recommended
- 6. Chronic disseminated candidiasis
- Preferred regimen (1): Fluconazole 400 mg (6 mg/kg) daily for stable patients
- Preferred regimen (2): Lipid formulation of amphotericin B(LFAmB) 35 mg/kg daily for severely ill patients
- Preferred regimen (3): Amphotericin B deoxycholate(AmB-d) 0.50.7 mg/kg daily for severely ill patients
- Alternative regimen (1): Caspofungin 70 mg loading dose, THEN 50 mg daily, followed by oral Fluconazole when clinically appropriate
- Alternative regimen (2): Micafungin 100 mg daily, followed by oral Fluconazole when clinically appropriate
- Alternative regimen (3): Anidulafungin 200 mg loading dose, THEN 100 mg daily, followed by oral Fluconazole when clinically appropriate
- Note (1): Transition from Lipid formulation of amphotericin B(LFAmB) or Amphotericin B deoxycholate(AmB-d) to fluconazole is favored after several weeks in stable patients.
- Note (2): Duration of therapy is until lesions have resolved (usually months) and should continue through periods of immunosuppression (e.g., chemotherapy and transplantation).
- Note (3): Therapy should be continued for weeks to months, until calcification occurs or lesions resolve.
- 7. Candida osteoarticular infection
- 7.1. Osteomyelitis
- Preferred regimen (1): Fluconazole 400 mg (6 mg/kg) daily for 612 months
- Preferred regimen (2): Lipid formulation of amphotericin B(LFAmB) 35 mg/kg daily for at least 2 weeks, then Fluconazole 400 mg daily for 612 months
- Alternative regimen (1): Caspofungin 70 mg loading dose, THEN 50 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily for 612 months
- Alternative regimen (2): Micafungin 100 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily for 612 months
- Alternative regimen (3): Anidulafungin 200 mg loading dose, THEN 100 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily for 612 months
- Alternative regimen (4): Amphotericin B deoxycholate(AmB-d) 0.51.0 mg/kg daily followed by Fluconazole at a dosage of 400 mg daily for 612 months
- Note (1): Duration of therapy usually is prolonged (612 months)
- Note (2): Surgical debridement is frequently necessary
- 7.2. Septic arthritis
- Preferred regimen (1): Fluconazole 400 mg (6 mg/kg) for at least 6 weeks
- Preferred regimen (2): Lipid formulation of amphotericin B (LFAmB) 35 mg/kg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily
- Alternative regimen (1): Caspofungin 70 mg loading dose, THEN 50 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily
- Alternative regimen (2): Micafungin 100 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily
- Alternative regimen (3): Anidulafungin 200 mg loading dose, THEN 100 mg daily for at least 2 weeks followed by Fluconazole at a dosage of 400 mg daily
- Note (1): Duration of therapy usually is for at least 6 weeks, but few data are available.
- Note (2): Surgical debridement is recommended for all cases.
- Note (3): For infected prosthetic joints, removal is recommended for most cases.
- 8. CNS candidiasis
- Preferred regimen (1): Lipid formulation of amphotericin B(LFAmB) at a dosage of 35 mg/kg daily  Flucytosine at a dosage of 25 mg/kg qid for several weeks followed by Fluconazole 400800 mg (612 mg/kg) daily
- Alternative regimen (1): Fluconazole 400800 mg (612 mg/ kg) daily for patients unable to tolerate Lipid formulation of amphotericin B (LFAmB)
- Note (1): Treat until all signs and symptoms, CSF abnormalities, and radiologic abnormalities have resolved.
- Note (2): Removal of intraventricular devices is recommended.
- 9. Candida endophthalmitis
- Preferred regimen (1): Amphotericin B deoxycholate(AmB-d) 0.71 mg/kg AND Flucytosine 25 mg/ kg qid
- Preferred regimen (2): Fluconazole 400800 mg daily (loading dose of 12 mg/kg then 612 mg/kg daily) is an acceptable alternative for less severe endophthalmitis
- Alternative regimen (1): Lipid formulation of amphotericin B(LFAmB) at a dosage of 35 mg/kg daily
- Alternative regimen (2): Voriconazole 6 mg/kg q12h for 2 doses, then 34 mg/kg q12h
- Alternative regimen (3): Caspofungin 70 mg loading dose, THEN 50 mg daily
- Alternative regimen (4): Micafungin 100 mg daily
- Alternative regimen (5): Anidulafungin 200 mg loading dose, THEN 100 mg daily
- Note (1): Alternative therapy is recommended for patients intolerant of or experiencing failure of Amphotericin B and Flucytosine therapy
- Note (2): Duration of therapy is at least 46 weeks as determined by repeated examinations to verify resolution.
- Note (3): Diagnostic vitreal aspiration should be done if etiology unknown.
- Note (4): Fluconazole at a dosage of 400800 mg daily (loading dose of 12 mg/kg then 612 mg/kg daily) is an acceptable alternative for less severe endophthalmitis
- Note (5): Surgical intervention for patients with severe endophthalmitis or vitreitis
- 10. Candida infection of the cardiovascular system
- 10.1. Endocarditis
- Preferred regimen (1): Lipid formulation of amphotericin B(LFAmB) at a dosage of 35 mg/kg daily  Flucytosine at a dosage of 25 mg/kg qid
- Preferred regimen (2): Amphotericin B deoxycholate AmB-d 0.61 mg/kg daily  Flucytosine 25 mg/kg qid
- Preferred regimen (3): Caspofungin 50150 mg daily
- Preferred regimen (4): Micafungin  100150 mg daily
- Preferred regimen (5): Anidulafungin  100200 mg daily
- Alternative regimen (1): Step-down therapy to Fluconazole 400800 mg (612 mg/kg) daily for susceptible organism in stable patient with negative blood culture results
- Note (1): Valve replacement is strongly recommended.
- Note (2): For those who are unable to undergo surgical removal of the valve, chronic suppression with fluconazole 400800 mg (612 mg/kg) daily is recommended.
- Note (3): Lifelong suppressive therapy for prosthetic valve endocarditis if valve cannot be replaced is recommended.
- 10.2. Pericarditis or myocarditis
- Preferred regimen (1): Lipid formulation of amphotericin B (LFAmB) at a dosage of 35 mg/kg daily
- Preferred regimen (2): Fluconazole 400800 mg (612 mg/kg) daily
- Preferred regimen (3): Caspofungin 50150 mg daily
- Preferred regimen (4): Micafungin 100150 mg daily
- Preferred regimen (5): Anidulafungin 100200 mg daily
- Alternative regimen (1): After stable, step-down therapy to Fluconazole 400800 mg (612 mg/kg) daily
- Note(1): Therapy is often for several months, but few data are available
- Note(2): A pericardial window or pericardiectomy is recommended.
- 10.3. Suppurative thrombophlebitis
- Preferred regimen (1): Lipid formulation of amphotericin B (LFAmB) at a dosage of 35 mg/kg daily
- Preferred regimen (2): Fluconazole 400800 mg (612 mg/kg) daily
- Preferred regimen (3): Caspofungin 50150 mg daily
- Preferred regimen (4): Micafungin 100150 mg daily
- Preferred regimen (5): Anidulafungin 100200 mg daily
- Alternative regimen (1): After stable, step-down therapy to Fluconazole 400800 mg (612 mg/kg) daily
- Note(1): Surgical incision and drainage or resection of the vein is recommended if feasible.
- Note(2): Treat for at least 2 weeks after candidemia has cleared.
- 10.4. Infected pacemaker, ICD, or VAD
- Preferred regimen (1): Lipid formulation of amphotericin B(LFAmB) at a dosage of 35 mg/kg daily  Flucytosine at a dosage of 25 mg/kg qid
- Preferred regimen (2): Amphotericin B deoxycholate (AmB-d) 0.61 mg/kg daily  Flucytosine 25 mg/kg qid
- Preferred regimen (3): Caspofungin 50150 mg daily
- Preferred regimen (4): Micafungin  100150 mg daily
- Preferred regimen (5): Anidulafungin  100200 mg daily
- Alternative regimen (1): Step-down therapy to Fluconazole 400800 mg (612 mg/kg) daily for susceptible organism in stable patient with negative blood culture results
- Note(1): Removal of pacemakers and ICDs strongly recommended.
- Note(2): Treat for 46 weeks after the device removed.
- Note(3): For VAD that cannot be removed, chronic suppressive therapy with fluconazole is recommended.
- 11. Neonatal candidiasis
- Preferred regimen (1): Amphotericin B deoxycholate (AmB-d) 1 mg/kg daily for 3 weeks
- Preferred regimen (2): Fluconazole 12 mg/kg daily for 3 weeks
- Alternative regimen (1): Lipid formulation of amphotericin B (LFAmB) 35 mg/kg daily for 3 weeks
- Note (1): A lumbar puncture and dilated retinal examination should be performed on all neonates with suspected invasive candidiasis.
- Note (2): Intravascular catheter removal is strongly recommended.
- Note (3): Duration of therapy is at least 3 weeks.
- Note (4): Lipid formulation of amphotericin B (LFAmB) used only if there is no renal involvement.
- Note (5): Echinocandins should be used with caution when other agents cannot be used.
- 12. Candida isolated from respiratory secretions
- Preferred regimen (1): Therapy not recommended
- Note (1): Candida lower respiratory tract infection is rare and requires histopathologic evidence to confirm a diagnosis.
- 13. Nongenital mucocutaneous candidiasis
- 13.1. Oropharyngeal
- Preferred regimen (1): Clotrimazole troches 10 mg 5 times daily
- Preferred regimen (2): Nystatin suspension at a concentration of 100,000 U/mL and a dosage of 46 mL qid OR 12 Nystatin pastilles (200,000 U each) administered qid for 714 days
- Preferred regimen (3): Fluconazole 100200 mg PO (3 mg/kg) daily for 714 days
- Alternative regimen (1): Itraconazole solution 200 mg daily
- Alternative regimen (2): Posaconazole suspension at a dosage of 400 mg twice daily for 3 days, THEN 400 mg daily for up to 28 days
- Alternative regimen (3): Voriconazole 200 mg bid
- Alternative regimen (4): Amphotericin B deoxycholate (AmB-d) 1-mL oral suspension administered at a dosage of 100 mg/mL qid
- Alternative regimen (5): Caspofungin 70 mg IV loading dose, THEN 50 mg daily
- Alternative regimen (6): Micafungin 100 mg IV daily
- Alternative regimen (7): Anidulafungin 200 mg IV loading dose, THEN 100 mg daily
- Alternative regimen (8): Amphotericin B deoxycholate (AmB-d) 0.3 mg/kg daily
- Note(1): Fluconazole is recommended for moderate-to-severe disease, and topical therapy with clotrimazole or nystatin is recommended for mild disease.
- Note(2): Treat uncomplicated disease for 714 days.
- Note(3): For refractory disease, itraconazole, voriconazole, posaconazole, or AmB suspension is recommended.
- 13.2. Esophageal
- Preferred regimen (1): Fluconazole 200400 mg  (36 mg/kg) PO daily
- Preferred regimen (2): Caspofungin 70 mg IV loading dose, THEN 50 mg daily
- Preferred regimen (3): Micafungin 100 mg IV daily
- Preferred regimen (4): Anidulafungin 200 mg IV loading dose, THEN 100 mg daily
- Preferred regimen (4): AmB-d 0.30.7 mg/kg daily
- Alternative regimen (1): Itraconazole oral solution 200 mg daily
- Alternative regimen (2): Posaconazole 400 mg bid
- Alternative regimen (3): Voriconazole 200 mg bid
- Note(1): Oral fluconazole is preferred.
- Note(2): For patients unable to tolerate an oral agent,Fluconazole IV, an echinocandin, or AmB-d is appropriate.
- Note(3): Treat for 1421 days.
- Note(4): For patients with refractory disease, the alternative therapy as listed or AmB-d or an echinocandin is recommended.
- Chromoblastomycosis Return to Top
- Preferred regimen: Itraconazole 200-400 mg PO q24h OR 400 mg pulse therapy once daily for 1 week monthly for 6-12 months
- Note: Pulse therapy reduces cost but it is questionable if it produces resistance to the drug.
- Alternative regimen (1): Terbinafine 500-1000 mg PO qd for 6-12 months
- Alternative regimen (2): Posaconazole 800 mg PO qd for 6-12 months
- Alternative regimen (3): 5-fluorocytosine 100-150 mg/kg/day PO qd for 6-12 months
- Note: This disease has a low cure ratio and high relapse ratio. Physical treatment is needed to achieve better results:
- Cryosurgery with liquid nitrogen - most used physical therapy, it's used in localized lesions and it has a very good treatment response, probably achieved by immune mechanisms since fungi are eliminated from lesions as late as 1-2 weeks after the therapy.
- Thermotherapy - used in conjunction with systemic therapy, was developed by Japanese authors and consists in placing "pocket warmers" in the lesions for 24h/day for some months, as the fungi is sensible to heat.
- Laser vaporization - studied in Germany as an alternative therapy, reported to successfully treat relapsing lesions.
- Coccidioidomycosis Return to Top
- 1. Primary pulmonary infection  
- 1.1 Indications for antifungal therapy
- Immunosupression (AIDS, therapy with high dose corticosteroids, receiptients of TNF-alpha, receiptients of an organ transplant)
- Diabetes
- Preexisting cardiomyopathy
- Pregnancy (third trimester)
- Filipino or African
- Weight loss of > 10%
- Intense night sweats persisting longer than 3 weeks
- Infiltrates involving more than one-half of one lung or portions of both lungs
- Prominent or persistent hilar adenopathy
- Anticoccidiodial complement-fixing antibody concentrations in excess of 1:16
- 1.2 Patients with low risk of complications or dissemination
- For many (if not most) patients, management may rely on periodic reassessment of symptoms and radiographic findings to assure resolution without antifungal treatment.
- 1.3 Patients with high risk of complications or dissemination
- 1.3.1 Mild to moderate pneumonia
- Preferred regimen (1): Itraconazole solution 200 mg PO bid or IV q12h
- Preferred regimen (2): Fluconazole 400 mg PO q24h for 312 months
- 1.3.2 Locally severe or disseminated pneumonia
- Preferred regimen: (Amphotericin B 0.61 mg/kg PO qd every 7 days THEN 0.8 mg/kg PO every other day OR Liposomal Amphotericin B 3-5 mg/kg IV q24 hrs OR Amphotericin B lipid complex 5 mg/kg IV q24 hrs until clinical improvement) followed by Itraconazole OR Fluconazole for at least 1 year.
- Note (1): Some use combination of Amphotericin B and Fluconazole for progressive severe disease; controlled series lacking.
- Note (2): Consultation with specialist recommendation, surgery may be required.
- 2. Meningitis
- 2.1 Adult
- Preferred regimen: Fluconazole 4001,000 mg PO q24h indefinitely.
- Alternative regimen: Amphotericin B 3-5 mg/kg IV q24 hrs PLUS 0.10.3 mg qd intrathecal (intraventricular) via reservoir device OR Itraconazole 400800 mg q24h OR Voriconazole
- Note: Some use combination of Amphotericin B and Fluconazole for progressive severe disease; controlled series lacking.
- 2.2 Child
- Preferred regimen: Fluconazole PO (Pediatric dose not established, 6 mg per kg q24h used)
- Alternative regimen: Amphotericin B 3-5 mg/kg IV q24 hrs PLUS 0.10.3 mg daily intrathecal (intraventricular) via reservoir device OR itra 400800 mg q24h OR Voriconazole
- 3. Special considerations for HIV/AIDS patients
- 3.1 Clinically mild infections (e.g., focal pneumonia)
- Preferred regimen: Fluconazole 400 mg PO daily OR Itraconazole 200 mg PO bid
- Alternative regimen (unresponsive to Fluconazole or Itraconazole): Posaconazole 200 mg PO bid OR Voriconazole 200 mg PO bid
- Note: Itraconazole, posaconazole, and voriconazole may have significant interactions with certain antiretro viral agents. These interactions are complex and can be bi-directional
- 3.2 Severe, non-meningeal infection (diffuse pulmonary infection or severely ill patients with extrathoracic, disseminated disease)
- Preferred regimen: Amphotericin B deoxycholate 0.71.0 mg/kg IV q12hrs OR Lipid formulation Amphotericin B 46 mg/kg IV q24hrs. Duration of therapy: continue until clinical improvement, then switch to an azole.
- Alternative regimen: Some specialists will add a triazole (Fluconazole or Itraconazole, with Itraconazole (preferred for bone disease) 400 mg per day to Amphotericin B therapy and continue triazole once Amphotericin B is stopped
- Note (1): Therapeutic drug monitoring and dosage adjustment may be necessary to ensure triazole antifungal and antiretroviral efficacy and reduce concentration-related toxicities.
- Note (2): Therapy should be continued indefinitely in patients with diffuse pulmonary or disseminated diseases because relapse can occur in 25%33% of HIV-negative patients. It can also occur in HIV-infected patients with CD4 counts >250 cells/L
- 3.3 Meningeal Infections
- Preferred regimen: Fluconazole 400800 mg IV or PO daily
- Alternative regimen: Itraconazole 200 mg PO tid for 3 days THEN 200 mg PO bid OR Posaconazole 200 mg PO bid OR Voriconazole 200400 mg PO bid OR Intrathecal Amphotericin B deoxycholate when triazole antifungals are ineffective.
- Note (1): Intrathecal amphotericin B should only be given in consultation with a specialist and administered by an individual with experience with the technique.
- Note (2): Some patients with meningitis may develop hydrocephalus and require CSF shunting
- Note (3): Therapy should be lifelong in patients with meningeal infections because relapse occurs in 80% of HIV-infected patients after discontinuation of triazole therapy
- 3.4 Chronic Suppressive Therapy
- Preferred regimen (1): Fluconazole 400 mg PO qd
- Preferred regimen (2): Itraconazole 200 mg PO bid
- Alternative regimen (1): Posaconazole 200 mg PO bid
- Alternative regimen (2): Voriconazole 200 mg PO bid
- Cryptococcosis Return to Top
- Cryptococcus Return to Top
- 1. Cryptococcus neoformans
- 1.1 Cryptococcus neoformans meningitis in HIV infected patients
- Preferred regimen for induction and consolidation: (Amphotericin B deoxycholate 0.7-1.0 mg/kg IV qd (consider using lipid formulations for patients with renal dysfunction) OR Liposomal AmB 3-4mg/kg IV qd OR Amphotericin B lipid complex (ABLC) 5mg/kg IV qd) PLUS Flucytosine 100mg/kg/day PO or IV qid for at least 2 weeks followed by Fluconazole 400mg (6mg/kg) PO qd for at least 8 weeks.
- Alternative regimen for induction and consolidation (1): Amphotericin B deoxycholate 0.7-1.0 mg/kg IV qd OR Liposomal AmB 3-4 mg/kg IV qd OR AmB lipid complex 5mg/kg IV qd for 4-6 weeks
- Alternative regimen for induction and consolidation (2): Amphotericin B deoxycholate 0.7 mg/kg IV qd PLUS Fluconazole 800mg PO qd for 2 weeks, followed by Fluconazole 800mg PO qd for at least 8 weeks
- Alternative regimen for induction and consolidation (3): Fluconazole (>800 mg PO qd, 1200mg PO qd is favored) PLUS Flucytosine (100mg/kg/day PO qid) for 6 weeks
- Alternative regimen for induction and consolidation (4): Fluconazole PO 800-2000mg qd for 10-12 weeks
- Preferred regimen for maintenance and prophylactic therapy: Initiate HAART 2-10 weeks after commencing initial antifungal therapy AND Fluconazole 200mg PO qd
- Alternative regimen for maintenance and prophylactic therapy: Itraconazole 200mg PO bid - monitor drug-level OR Amphotericin B deoxycholate (1 mg/kg) per week IV (should be used in azole-intolerant patients).
- Note (1): Consider discontinuing supressive therapy if CD4 count is higher than 100 cells/uL AND undetectable OR very low HIV RNA level for more than 3 months. Consider reinstitution of maintenance therapy if CD4 count <100 cels/uL.
- Note (2): Do not use acetazolamide OR mannitol OR corticosteroids to treat increased intracranial pressure, instead it should be used lombar puncture in the absence of focal neurologic signs or impaired mentation (which, if present, patient must be submitted to CT or MRI scan first).
- Preferred regimen for induction and consolidation: (Amphotericin B deoxycholate 0.7-1.0 mg/kg IV qd (consider using lipid formulations for patients with renal dysfunction) OR Liposomal AmB 3-4mg/kg IV qd OR Amphotericin B lipid complex (ABLC) 5mg/kg IV qd) PLUS Flucytosine 100mg/kg/day PO or IV qid for at least 2 weeks followed by Fluconazole 400mg (6mg/kg) PO qd for at least 8 weeks
- Note: Consider surgery if lesions are larger than 3cm, accessible lesions with mass effect or lesions that are enlarging and not explained by IRIS.
- Preferred regimen: Amphotericin B deoxycholate 0.7-1.0 mg/kg IV qd PLUS Flucytosine 100mg/kg/day PO or IV qid for at least 4 weeks (which may be extended to 6 weeks if there is any neurological complication) followed by Fluconazole 400mg PO qd for 8 weeks. If there's toxicity to AmBd, consider changing to LFAmB in the second 2 weeks.
- Note (1): After induction and consolidation therapy, start Fluconazole 200mg (3mg/kg) PO qd for 6-12 months.
- Note (2): If Flucytosine is not given, consider lengthening the induction therapy for at least 2 weeks.
- Mild-moderate symptoms, without severe immunosupression and absence of diffuse pulmonary infiltrates:
- Preferred regimen: Fluconazole 400mg PO qd for 6-12 months
- Severe pneumonia or disseminated disease or CNS infection:
- Preferred regimen: treat like CNS cryptococcosis.
- Note (1): In HIV- infected patients, treatment should be stopped after 1 year if CD4 count is >100 and a cryptococcal antigen titer is <1:512 and not increasing.
- Note (2): Consider corticosteroid if ARDS is present in a context which it might be attributed to IRIS.
- Mild-moderate symptoms, without severe immunosupression and absence of diffuse pulmonary infiltrates:
- Preferred regimen: Fluconazole 400mg PO qd for 6-12 months
- Alternative regimen: if Fluconazole is unavailable or contraindicated, Itraconazole 200mg PO bid, Voriconazole 200 mg PO bid, and Posaconazole 400mg PO bid
- If there's severe pneumonia, disseminated disease or CNS infection:
- Preferred regimen: treat like CNS cryptococcosis for 6-12 months.
- Cryptococcemia or disseminated cryptococcic disease  (involvement of at least 2 noncontiguous sites or cryptococcal antigen titer >1:512):
- Preferred regimen: treat like CNS infection.
- If infection occurs at a single site and no immunosupressive risk factors
- Preferred regimen: Fluconazole 400mg PO qd for 6-12 months
- Preferred regimen for induction and consolidation: Amphotericin B deoxycholate 1.0 mg/kg qd IV PLUS Flucytosine 100mg/kg PO or IV qid for 2 weeks followed by Fluconazole 10-12mg/kg PO qd for 8 weeks
- Alternative regimen: patients with renal dysfunction: change Amphotericin B deoxycholate by Liposomal AmB 5mg/kg IV qd or Amphotericin B lipid complex (ABLC) 5mg/kg IV qd
- Preferred regimen for maintenance: Fluconazole 6mg/kg PO qd. Discontinuation of maintenance therapy is poorly studied and should be individualized.
- Cryptococcal pneumonia:
- Preferred regimen Fluconazole 6-12mg/kg PO qd for 6-12 months
- Preferred regimen for induction and consolidation: Amphotericin B deoxycholate 0.7-1.0 mg/kg IV qd (consider using lipid formulations for patients with renal dysfunction - Liposomal AmB 3-4mg/kg IV qd OR Amphotericin B lipid complex (ABLC) 5mg/kg IV qd. Consider using Flucytosine in relationship to benefit risk basis, since it is a Category C drug for pregnancy. Start Fluconazole after delivery. Avoid use during first trimester and consider use in the last 2 trimesters with the need for continuous antifungal therapy during pregnancy.
- Note: If pulmonary cryptococcosis: perform close follow-up and administer fluconazole after delivery.
- Disseminated cryptococcosis or CNS disease:
- Preferred regimen: treatment is the same as C. neoformans.
- Pulmonary disease: single and small cryptococcoma:
- Preferred regimen: Fluconazole 400mg per day PO for 6-18months
- Pulmonary disease: Very large or multiple cryptococcomas:
- Preferred regimen: administer Flucytosine AND AmB deocycholate for 4-6 weeks, followed by fluconazole for 6-18 months.
- Note: Surgery should be considered if there is compression of vital structures OR failure to reduce the size of the cryptococcoma after 4 weeks of therapy
- Tinea cruris Return to Top
- Tinea Cruris
- 1. Topical cream/ointment
- Preferred regimen (1): Butenafine cream applied qd for 14 days
- Preferred regimen (2): Terbinafine cream applied bid for 14 days
- 2. Oral antifungal
- Preferred regimen: Fluconazole 200 mg qd for 10 days AND Terbinafine 250 mg qd for 30 days
- Note: Oral antifungal therapy is generally reserved for cases unresponsive to topical agents or can be used along with topical agents in severe cases.
- Tinea corporis Return to Top
- Tinea corporis
- Small, well-defined lesions
- Preferred regimen: Topical cream/ointment like Terbinafine OR Miconazole OR Econazole OR Clotrimazole
- Larger lesionss
- Preferred regimen:  Terbinafine 250 mg/day PO for 2 weeks OR Itraconazole 200 mg/day PO for 1 wk OR Fluconazole 250 mg PO weekly for 2-4 weeks
- Tinea pedis Return to Top
- 1. Tinea pedis
- 1.1 Athlete's foot
- 1.1.1 Interdigital
- Preferred regimen: Topical cream/ointment Terbinafine OR Miconazole OR Econazole OR Clotrimazole
- 1.1.2 Dry type
- Preferred regimen (1): Terbinafine 250 mg/day PO for 2-4 weeks
- Preferred regimen (2): Itraconazole 400 mg/day PO for 1 week per month (repeated if necessary)
- Preferred regimen (3): Fluconazole 200 mg PO  weekly for 4-8 weeks
- Tinea capitis Return to Top
- Tinea capitis
- Preferred regimen (1): Griseofulvin 10-20 mg/kg/day for minimum 6 weeks
- Preferred regimen (2): Itraconazole 4-6 mg/kg pulsed dose weekly
- Preferred regimen (3): Terbinafine if 40 kg: 250 mg/day
- Tinea barbae Return to Top
- Tinea Barbae
- Preferred regimen: Terbinafine PO 250mg/day for 4 weeks.
- Alternative regimen: Itraconazole PO 200mg/day for 2 weeks.
- Tinea incognito Return to Top
- Tinea Incognito
- Preferred regimen: Stop topical steroids and treat with topical 1% terbinafine cream for 6 weeks.
- Tinea manuum Return to Top
- Tinea Manuum
- Preferred regimen: topical or systemic terbinafine PO 250 mg/day por 2-4 weeks.
- Tinea versicolor Return to Top
- Tinea versicolor
- Preferred regimen: Ketoconazole 400 mg PO single dose OR 200 mg q24h for 7 days OR 2% cream once q24h for 2 weeks
- Alternative regimen: Fluconazole 400 mg PO single dose OR Itraconazole 400 mg PO q24h for 37 days
- Majocchi's granuloma Return to Top
- Majocchi's Granuloma
- Preferred regimen: Terbinafine PO 250mg/day for 2-4 weeks.
- Alternative regimen: Itraconazole 200mg PO bid for 1 week, per month for 2 months.
- Onychomycosis Return to Top
- Onychomycosis
- 10.1 Fingernails
- Preferred regimen: Terbinafine PO 250mg/day for 6 weeks OR Itraconazole PO 200mg twice a day for a week a month for 2 months (European guidelines).
- 10.2 Toenails
- Preferred regimen: Toenails Terbinafine PO 250mg/day for 12 weeks OR Itraconazole PO 200mg/day for 12 weeks (U.S. guidelines) OR Itraconazole PO 200mg twice a day for a week a month for 3 months (European guidelines).
- Note (1): There is no evidence that combining systemic and topic treatments has any benefit to the patient.
- Histoplasmosis Return to Top
- 1. Adult treatment: 
- 1.1 Pulmonary
- 1.1.1 Acute pulmonary histoplasmosis
- 1.1.1.1 Moderate severe or severe
- Preferred regimen (1): Lipid formulation of Amphotericin B (3.05.0 mg/kg IV q12h for 12 weeks) THEN Itraconazole (200 mg tid for 3 days THEN 200 mg bid for a total of 12 weeks).
- Preferred regimen (2): Methylprednisolone (0.51.0 mg/kg IV q24h) during the first 12 weeks of antifungal therapy is recommended for patients who develop respiratory complications, including hypoxemia or significant respiratory distress
- Alternative regimen: The deoxycholate formulation of Amphotericin B (0.71.0 mg/kg q24h IV) is an alternative to a lipid formulation in patients who are at a low risk for nephrotoxicity.
- Note (1): In severe cases, cases accompanied by respiratory insufficiency, or hypoxemia, anecdotal reports suggest that corticosteroid therapy may hasten recovery
- Note (2): The pulmonary infiltrates should be resolved on the chest radiograph before antifungal therapy is stopped.
- 1.1.1.2 Mild to moderate:
- Treatment is usually unnecessary
- Preferred regimen for patients who continue to have symptoms for >1 month: Itraconazole (200 mg tid for 3 days {{then} 200 mg qd OR bid for 612 weeks)
- Note (1): Antifungal treatment is unnecessary in patients with mild symptoms caused by acute pulmonary histoplasmosis
- 1.1.2 Chronic cavitary pulmonary histoplasmosis:
- Preferred regimen: Itraconazole (200 mg tid for 3 days and THEN qd or bid for at least 1 year) is recommended
- Note (1): Blood levels of itraconazole should be obtained after the patient has been receiving this agent for at least 2 weeks to ensure adequate drug exposure
- Note (2): Patients with underlying emphysema often develop progressive pulmonary disease, which is characterized by cavities with surrounding inflammation after infection with hysotplasma capsulatum
- 1.1.3 Broncholithiasis
- Antifungal treatment is not recommended
- Note: Bronchoscopic or surgical removal of the broncholith is recommended
- 1.1.4 Pulmonary nodules (Histoplasmomas)
- Antifungal treatment is not recommended
- Note: There is no evidence that antifungal agents have any effect on histoplasmomas or that histoplasmomas contain viable organisms.
- 1.2 Mediastinitis
- 1.2.1 Mediastinal lymphadenitis
- 1.2.1.1 Asymptomatic cases
- Treatment is usually unnecessary
- 1.2.1.2 Patients who have symptoms that warrant treatment with corticosteroids and in those who continue to have symptoms for > 1 month
- Itraconazole (200 mg 3 tid for 3 days and THEN 200 mg qd or bid for 612 weeks)
- 1.2.1.2 Severe cases with obstruction or compression of contiguous structures
- Preferred regimen: Prednisone (0.51.0 mg/kg qd  in tapering doses over 12 weeks)
- Note (1): Antifungal treatment is unnecessary in most patients with symptoms due to mediastinal lymphadenitis
- Note (2): Itraconazole is recommended for 612 weeks to reduce the risk of progressive disseminated disease caused by corticosteroid-induced immunosuppression in patients who are given corticosteroids and in patients whose symptoms last longer than 1 month.
- 1.2.2 Mediastinal granuloma
- 1.2.2.1 Asymptomatic cases
- Treatment is usually unnecessary
- 1.2.2.2 Symptomatic cases
- Preferred regimen: Itraconazole (200 mg 3 times qd for 3 days and THEN qd or bid for 612 weeks)
- Note (1): Itraconazole is appropriate for symptomatic cases but there are no controlled trials to prove its efficacy.
- Note (2): There is no evidence that mediastinal granuloma evolves into mediastinal fibrosis. Thus treatment with either surgery or itraconazole should not be used to prevent the development of mediastinal fibrosis
- 1.2.3 Mediastinal fibrosis
- Antifungal treatment is not recommended
- 1.2.3.1 If clinical findings cannot differentiate mediastinal fibrosis from mediastinal granuloma
- Preferred regimen: Itraconazole (200 mg qd or bid for 12 weeks)
- Note: The placement of intravascular stents is recommended for selected patients with pulmonary vessel obstruction
- Note (2): Mediastinal fibrosis is characterized by invasive fibrosis that encases mediastinal or hilar nodes and that is defined by occlusion of central vessels and airways
- 1.3 Pericarditis:
- 1.3.1 Mild cases
- Preferred regimen: Nonsteroidal anti-inflammatory therapy
- 1.3.2 Patients with evidence of hemodynamic compromise or unremitting symptoms after several days of therapy with nonsteroidal anti-inflammatory therapy
- Prednisone (0.51.0 mg/kg qd  in tapering doses over 12 weeks)
- 1.3.3 If corticosteroids are administered
- Preferred regimen: Itraconazole (200 mg tid for 3 days and THEN qd or bid for 612 weeks)
- Note (1): Pericardial fluid removal is indicated for patients with hemodynamic compromise.
- Note (2): Pericarditis occurs as a complication of inflammation in adjacent mediastinal lymph nodes in patients with acute pulmonary histoplasmosis.
- 1.4 Central nervous system histoplasmosis
- Preferred regimen: Liposomal Amphotericin B (5.0 mg/kg qd for a total of 175 mg/kg given over 46 weeks) followed by Itraconazole (200 mg 2 or 3 times qd) for at least 1 year and until resolution of cerebro spinal fluid abnormalities including Histoplasma antigen levels.
- Note: Blood levels of Itraconazole should be obtained to ensure adequate drug exposure
- 1.5 Rheumatologic syndromes
- 1.5.1 Mild cases
- Preferred regimen: Nonsteroidal anti-inflammatory therapy
- 1.5.2 Severe cases
- Preferred regimen: Prednisone (0.51.0 mg/kg qd  in tapering doses over 12 weeks)
- 1.5.3 Corticosteroids administration
- Itraconazole (200 mg 3 times tid for 3 days and THEN qd or bid for 612 weeks)
- Note (1): If corticosteroids are used, concurrent itraconazole treatment is recommended to reduce the risk of progressive infection
- Note (2): Bone or joint involvement is very rare in progressive disseminated histoplasmosis but it should not be overlooked.
- 1.6 Progressive disseminated histoplasmosis
- 1.6.1 Moderately severe to severe disease
- Preferred regimen: Liposomal Amphotericin B (3.0 mg/kg qd) is recommended for 12 weeks followed by oral Itraconazole (200 mg 3 times qd for 3 days and THEN 200 mg bid for a total of at least 12 months)
- Note (1): Substitution of another lipid formulation at a dosage of 5.0 mg/kg qd may be preferred in some patients because of cost or tolerability
- Note (2): The deoxycholate formulation of Amphotericin B (0.71.0 mg/kg qd) is an alternative to a lipid formulation in patients who are at a low risk for nephrotoxicity
- 1.6.2 Immunosupressed patients
- Lifelong suppressive therapy with Itraconazole (200 mg qd)
- 1.6.3 Mild to moderate disease
- Itraconazole (200 mg tid for 3 days and then bid qid for at least 12 months)
- Note (1): Lifelong suppressive therapy with itraconazole (200 mg daily) may be required in immunosuppressed patients if immunosuppression cannot be reversed and in patients who relapse despite receipt of appropriate therapy
- Note (2): Blood levels of itraconazole should be obtained to ensure adequate drug exposure
- Note (3): Antigen levels should be measured during therapy and for 12 months after therapy is ended to monitor for relapse. Persistent low-level antigenuria may not be a reason to prolong treatment in patients who have completed appropriate therapy and have no evidence of active infection.
- Note (4): Progressive disseminated histoplasmosis is fatal without therapy and treatment with either Amphotericin B or Itraconazole is highly effective. Among patients with AIDS and moderately severe to severe disseminated histoplasmosis, the rate of response was higher (88% vs. 64%) and the mortality rate was lower (2% vs. 13%) among recipients of liposomal amphotericin B (3 mg/kg qd for 12 weeks) than among recipients of the deoxycholate formulation.
- 1.7 Prophylaxis recommended for immunosuppressed patients
- Preferred regimen: Itraconazole (200 mg qd) in patients with HIV infection with CD4 cell counts 10 cases per 100 patient-years
- Note: Prophylaxis with Itraconazole (200 mg qd) may be appropriate in specific circumstances in other immunosuppressed patients
- 1.8 Performance Measures
- Preferred regimen: Itraconazole is the preferred azole for initial therapy for patients with mild-to-moderate histoplasmosis and as step-down therapy after receipt of Amphotericin B
- Note: When other azole agents are used, the medical record should document the specific reasons that Itraconazole was not used and why other azoles were used.
- 14.1 Severe or moderately severe histoplasmosis
- Preferred regimen: Amphotericin B
- Note: When Amphotericin B is used the patient's electrolyte level renal function and blood cell count should be monitored several times per week and documented in the medical record.
- Note (2): Itraconazole drug levels should be measured during the first month in patients with disseminated or chronic pulmonary histoplasmosis and these levels should be documented in the medical record as well as the physician's response to levels that are too low.
- Note (3): Itraconazole should not be given to patients receiving contraindicated medications (i.e., pimozide, quinidine, dofetilide, lovastatin, simvastatin, midazolam, and triazolam). Reasons for deviation from this practice should be documented in the medical record.
- 2. Pregnancy treatment
- Preferred regimen: Lipid formulation Amphotericin B (3.05.0 mg/kg qd for 46 weeks) is recommended
- Prefered regimen low risk for nephrotoxicity: The deoxycholate formulation of Amphotericin B (0.71.0 mg/kg qd) is an alternative to a lipid formulation
- Note (1): If the newborn shows evidence for infection, treatment is recommended with Amphotericin B deoxycholate (1.0 mg/kg daily for 4 weeks)
- Note (2): Unique issues in pregnancy include the risk of teratogenic complications of azole therapy and of transplacental transmission of Histoplasma capsulatum to the fetus
- 3. Children treatment
- 3.1 Acute pulmonary histoplasmosis
- Treatment indications and regimens are similar to those for adults, except that Amphotericin B deoxycholate (1.0 mg/kg daily) is usually well tolerated and the lipid preparations are not preferred
- Note: Itraconazole dosage: 5.010.0 mg/kg daily in 2 divided doses (not to exceed 400 mg daily), generally using the solution formulation
- Progressive disseminated histoplasmosis
- Prefered regimen: Amphotericin B deoxycholate (1.0 mg/kg qd for 46 weeks)
- Alternative regimen: Amphotericin B deoxycholate (1.0 mg/kg qd for 24 weeks) followed by itraconazole (5.010.0 mg/kg qd in 2 divided doses) to complete 3 months of therapy.
- Immunosuppressed patients if immunosuppression cannot be reversed and patients in relapse despite appropiate therapy
- Note (1): Longer therapy may be needed for patients with severe disease, immunosuppression, or primary immunodeficiency syndromes
- Note (2): Blood levels of itraconazole should be obtained to ensure adequate drug exposure
- Note (3): Antigen levels should be monitored during therapy and for 12 months after therapy is ended to monitor for relapse. Persistent low-level antigenuria may not be a reason to prolong treatment in patients who have completed appropriate therapy and have no evidence of active infection.
- Mucormycosis Return to Top
- Mucormycosis
- Treatment include surgical debridement of involved tissues, antifungal therapy, use of growth factors to accelerate recovery from neutropenia, provision of granulocyte transfusions with sustained circulating neutrophils until the patient recovers from neutropenia, and discontinuation or reduction in the dose of glucocorticoids, correction of metabolic acidosis and hyperglycemia.
- Preferred regimen (1): Amphotericin B Deoxycholate 1.0-1.5 mg/kg/day IV q24h
- Preferred regimen (2): Lipid Amphotericin B 5-10 mg/kg/day IV q24h
- Preferred regimen (3): Amphotericin B lipid complex 5-7.5 mg/kg/day IV q24h
- Alternative regimen (1):Caspofungin 70 mg IV load dose, 50 mg/day for >2 weeks PLUS Lipid Amphotericin B 5-10 mg/kg/day IV q24h
- Pediatric dose: Caspofungin 50 mg/m2 IV q24h PLUS  Lipid Amphotericin B 5-10 mg/kg/day IV q24h
- Alternative regimen (2): Micafungin OR Anidulafungin 100 mg/day for 2 weeks PLUS Lipid Amphotericin B 5-10 mg/kg/day IV q24h
- Pediatric dose: Micafungin 4 mg/kg/day; Micafungin 10mg/kg/day for low-birth weight infants; Anidulafungin 1.5 mg/kg/day
- Alternative regimen (3): Deferasirox 20 mg/kg PO qd for 24 weeks PLUS Lipid Amphotericin B 5-10 mg/kg/day IV q24h
- Alternative regimen (4): Posaconazole 800 mg/day PO qid or bid
- Alternative regimen (5): Initial: Isavuconazole 200 mg PO/IV q8h for 6 doses; maintenance: 200 mg PO/IV qd
- Note (1): start maintenance dose 12 to 24 hours after the last loading dose.
- Note (2): For salvage therapy: (Posaconazole 800 mg/day PO qid or bid  Lipid Amphotericin B 5-10 mg/kg/day IV q24h) OR (Deferasirox 20 mg/kg PO qd for 24 weeks PLUS Lipid Amphotericin B 5-10 mg/kg/day IV q24h) OR Granulocyte transfusions (for persistently neutropenic patients) 109 cells/kg OR Recombinant cytokines G-CSF 5 g/kg/day, GM-CSF 100250 g/m2, or IFN-g at 50 g/m2 for those with body surface area  0.5 m2 and 1.5 g/kg for those with body surface area <0.5 m2
- Penicilliosis Return to Top
- Penicilliosis treatment
- 1. Mild disease
- Preferred regimen: Itraconazole 200 mg PO bid for 8 to 12 weeks without amphotericin B induction therapy
- Alternative regimen: Voriconazole 400 mg PO bid on day 1 THEN 200 mg PO bid for 12 weeks
- 2. Moderate-severe disease
- Preferred regimen: Liposomal Amphotericin B 3-5 mg/kg/day IV qd OR Amphotericin B lipid complex 5 mg/kg/day IV qd for 2 weeks THEN Itraconazole 200 mg PO bid for 10 weeks
- Alternative regimen:  Voriconazole 6 mg/kg IV q12h on day 1 THEN 4 mg/kg q12h for at least 3 days THEN Voriconazole 200 mg PO bid for a total of 12 weeks
- 3. Maintenance therapy
- Preferred regimen Itraconazole 200 mg PO qd
- Alternative regimen: Voriconazole 200 mg PO bid
- Note: Voriconazole and Itraconazole use require serum levels to be monitored to ensure adequate absorption.
- Sporotrichosis Return to Top
- Lymphocutaneous/cutaneous
- Preferred regimen: Itraconazole 200mg PO qd
- Alternative regimen: Itraconazole 200 mg PO bid OR Terbinafine 500 mg PO bid OR Saturated solution potassium iodide with increasing doses OR Fluconazole 400800 mg PO qd OR local hyperthermia
- Note (1): Treat for 24 weeks after lesions resolved
- Note (2): SSKI initiated at a dosage of 5 drops (using a standard eyedropper) q8h, increasing as tolerated to 4050 drops q8h
- Osteoarticular
- Preferred regimen: Itraconazole 200mg PO bid for 12 months
- Alternative regimen: Lipid amphotericin B (Lipid AmB) 35 mg/kg/day IV OR Amphotericin B deoxycholate 0.71 mg/kg/day IV
- Note (1): Switch to Itraconazole after favorable response if AmB used
- Note (2): Treat for a total of at least 12 months
- Pulmonary
- Preferred regimen(1): Lipid amphotericin B (Lipid AmB) 35 mg/kg/day IV for severe or life-threatening pulmonary sporotrichosis, then Itraconazole 200 mg PO bid
- Preferred regimen(2): Itraconazole 200 mg PO bid for 12 months for less severe disease
- Alternative regimen: Amphotericin B deoxycholate 0.71 mg/kg/d IV THEN Itraconazole 200 mg PO bid OR surgical removal
- Note (1): Treat severe disease with an AmB formulation followed by Itraconazole
- Note (2): Treat less severe disease with Itraconazole
- Note (3): Treat for a total of at least 12 monthsSurgery combined with amphotericin B therapy is rec- ommended for localized pulmonary disease
- Meningitis
- Preferred regimen: Lipid amphotericin B (Lipid AmB) 5 mg/kg daily for 46 weeks, then Itraconazole 200 mg PO bid
- Alternative regimen: Amphotericin B deoxycholate 0.71 mg/kg/d, then Itraconazole 200 mg PO bid
- Note  (1): Length of therapy with AmB not established, but therapy for at least 46 weeks is recommended.
- Note (2): Treat for a total of at least 12 months.
- Note (3): May require long-term suppression with Itraconazole.
- Disseminated
- Preferred regimen: Lipid amphotericin B (Lipid AmB) 35 mg/kg/day, then Itraconazole 200 mg PO bid
- Alternative regimen: Amphotericin B deoxycholate 0.71 mg/kg/day, then Itraconazole 200 mg PO bid
- Note(1): Therapy with AmB should be continued until the patient shows objective evidence of improvement.
- Note(2): Treat for a total of at least 12 months.
- Note(3): May require long-term suppression with Itraconazole.
- Pregnant women
- Preferred regimen(1): Lipid amphotericin B (Lipid AmB) 35 mg/kg/day IV OR Amphotericin B deoxycholate 0.71 mg/kg/day IV for severe sporotrichosis
- Preferred regimen(2): Local hyperthermia for cutaneous disease.
- Note (1): It is preferable to wait until after delivery to treat nonlife-threatening forms of sporotrichosis.
- Note (2): Azoles should be avoided.
- Children
- Preferred regimen:
- Mild disease: Itraconazole 610 mg/kg/day PO (400 mg/day maximum)
- Severe disease: Amphotericin B deoxycholate 0.7 mg/kg/day IV followed by Itraconazole 610 mg/kg PO up to a maximum of 400 mg PO daily, as step-down therapy
- Alternative regimen: Saturated solution potassium iodide with increasing doses for mild disease initiated at a dosage of 1 drop (using a standard eyedropper) q8h and increased as tolerated up to a maximum of 1 drop/kg or 4050 drops q8h, whichever is lowest
- Pneumocystis jiroveci Return to Top
- 1. Preventing First Episode of PCP (Primary Prophylaxis)
- Preferred regimen: TMP-SMX 1 Double-Strength(DS) PO daily OR TMP-SMX 1 Single-Strength(SS) PO daily
- Alternative regimen (1): TMP-SMX 1 Double-Strength(DS) tid weekly OR Dapsone 100 mg PO daily or 50 mg PO bid
- Alternative regimen (2): Dapsone 50 mg PO AND (Pyrimethamine 50 mg PO AND Leucovorin 25 mg) PO weekly
- Alternative regimen (3): Dapsone 200 mg PO AND Pyrimethamine 75 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (4): Aerosolized Pentamidinec 300 mg via Respigard IITM nebulizer every month
- Alternative regimen (5): Atovaquone 1500 mg PO qd with food
- Alternative regimen (6): Atovaquone 1500 mg PO AND Pyrimethamine 25 mg PO AND Leucovorin 10 mg PO daily with food
- 2. Treatment of Pneumocystis Pneumonia
- 2.1. Moderate to Severe PCP
- Preferred regimen: TMP-SMX (TMP 1520 mg and SMX 75100 mg)/kg/day IV given q6h or q8h
- Note: May switch to PO after clinical improvement
- Alternative regimen (1): Pentamidine 4 mg/kg IV once daily infused over at least 60 minutes
- Note: May reduce the dose to 3 mg/kg IV once daily because of toxicities.
- Alternative regimen (2): Primaquine 30 mg (base) PO once daily AND (Clindamycin  or )
- Note (1): Duration of PCP treatment is 21 days
- Note (2): Adjunctive corticosteroid may be indicated in some moderate to severe cases.Prednisone doses (beginning as early as possible and within 72 hours of PCP therapy) (AI):
- Note (3): Prednisone doses (beginning as early as possible and within 72 hours of PCP therapy)
- Days 15 40 mg PO BID
- Days 610 40 mg PO daily
- Days 1121 20 mg PO daily
- 2.2. Mild to Moderate PCP
- Preferred regimen: TMP-SMX (TMP 1520 mg/kg/day and SMX 75100 mg/kg/day), given PO in 3 divided doses OR TMP-SMX Double-Strength(DS) - 2 tablets tid
- Alternative regimen (1): Dapsone 100 mg PO daily AND TMP 15 mg/kg/day PO (3 divided doses)
- Alternative regimen (2): Primaquine 30 mg (base) PO daily AND Clindamycin PO (450 mg q6h or 600 mg q8h)
- Alternative regimen (3): Atovaquone 750 mg PO BID with food
- Note: Duration of PCP treatment is 21 days
- 3. Preventing Subsequent Episode of PCP (Secondary Prophylaxis)
- Preferred regimen: TMP-SMX 1 Double-Strength(DS) PO daily OR TMP-SMX 1 Single-Strength(SS) PO daily
- Alternative regimen (1): TMP-SMX 1 Double-Strength(DS) tid weekly OR Dapsone 100 mg PO daily or 50 mg PO BID
- Alternative regimen (2): Dapsone 50 mg PO daily AND (Pyrimethamine 50 mg + Leucovorin 25 mg) PO weekly
- Alternative regimen (3): Dapsone 200 mg AND Pyrimethamine 75 mg AND Leucovorin 25 mg PO weekly
- Alternative regimen (4): Aerosolized Pentamidinec 300 mg via Respigard IITM nebulizer every month
- Alternative regimen (5): Atovaquone 1500 mg PO daily with food
- Alternative regimen (6): Atovaquone 1500 mg AND Pyrimethamine 25 mg AND Leucovorin 10 mg PO daily with food

### Mycobacteria
- Mycobacterium tuberculosis Return to Top
- 1. Standard Regimens for new patients 
- 1.1 Adult
- 1.1.1 Initial phase
- Preferred regimen: Isoniazid 300 mg PO (5 mg/kg/day) qd for 8 weeks AND Rifampicin 600 mg PO (10 mg/kg/day) qd for 8 weeks AND Pyrazinamide 2 g PO (25 mg/kg/day) qd for 8 weeks AND Ethambutol 1.6 g PO (15 mg/kg/day) qd for 8 weeks
- Alternative regimen (1): Isoniazid 300 mg/day PO for 2 weeks (5 mg/kg/day) AND Rifampicin 600 mg/day PO for 2 weeks (10 mg/kg/day) AND Pyrazinamide 2 g/day PO for 2 weeks (25 mg/kg/day) AND Ethambutol 1.6 g PO for 2 weeks (15 mg/kg/day), followed by Isoniazid 300 mg/day PO twice weekly for 6 weeks (5 mg/kg/day) AND Rifampicin 600 mg/day PO twice weekly for 6 weeks (10 mg/kg/day) AND Pyrazinamide 2 g/day PO twice weekly for 6 weeks AND Ethambutol 1.6 g PO for 2 weeks (15 mg/kg/day)
- Alternative regimen (2): Isoniazid 300 mg/day PO thrice weekly for 8 weeks (5 mg/kg/day) AND Rifampicin 600 mg/day PO thrice weekly for 8 weeks (10 mg/kg/day) AND Pyrazinamide 2g/day PO thrice weekly for 8 week (25 mg/kg/day) AND Ethambutol 1.6 g PO thrice weekly for 8 weeks (15 mg/kg/day)
- 1.1.2 Continuation phase
- Preferred regimen (1): Isoniazid 300 mg PO (5 mg/kg/day) qd AND Rifampicin 600 mg PO (10 mg/kg/day) qd for 18 weeks
- Preferred regimen (2): Isoniazid 300 mg PO twice weekly (5 mg/kg/day) AND Rifampicin 600 mg/day PO twice weekly (10 mg/kg/day) for 18 weeks
- Alternative regimen (1): Isoniazid 300 mg/day PO biweekly for 18 weeks (5 mg/kg/day) AND Rifampicin 600 mg/day PO biweekly for 18 weeks (10 mg/kg/day)
- Alternative regimen (2): Isoniazid 300 mg/day PO thrice weekly for 18 weeks (5 mg/kg/day) AND Rifampicin 600 mg/day PO thrice weekly for 18 weeks (10 mg/kg/day)
- 1.2 Pediatric
- 1.2.1 Initial phase
- Preferred regimen: Isoniazid 10 mg/kg PO (Maximum, 300 mg/day) AND Rifampicin 15 mg/kg PO (Maximum, 600 mg/day) AND Pyrazinamide 35 mg/kg PO (Maximum, 2 g/day) AND Ethambutol 20 mg/kg PO (Maximum, 1.6 g/day), each for 8 weeks
- 1.2.2 Continuation phase
- Preferred regimen: Isoniazid 10 mg/kg PO (Maximum, 300 mg/day) AND Rifampicin 15 mg/kg PO (Maximum, 600 mg/day), each drug daily for 18 weeks
- 2. MDR Tuberculosis 
- 2.1 Adult
- Preferred regimen: 4 agents combination
- Agent 1: Pyrazinamide 2030 mg/kg OR Ethambutol 1525 mg/kg OR Rifabutin 5 mg/kg
- Agent 2: Capreomycin 15 mg/kg OR Kanamycin 15 mg/kg OR Amikacin 7.5-10 mg/kg OR Streptomycin 1218 mg/kg
- Agent 3: Levofloxacin 500-1000 mg OR Moxifloxacin 400 mg OR Ofloxacin 400 mg
- Agent 4: Ethionamide 15-20 mg/kg OR Protionamide 15-20 mg/kg OR Cycloserine 10-15 mg/kg OR Terizidone 10-20 mg/kg OR Para-aminosalicylic acid 8-12 g/day IV q8-12h
- 2.2 Pediatric
- Preferred regimen: 4 agents combination
- Agent 1: Pyrazinamide 20-30 mg/kg (Maximum: 600 mg) OR Ethambutol 15-20 mg/kg OR Rifabutin 5 mg/kg
- Agent 2: Capreomycin 15-30 mg/kg (Maximum: 1000 mg) OR Kanamycin 15-30 mg/kg (Maximum: 1000 mg) OR Amikacin 15-22.5 mg/kg (Maximum: 1000 mg) OR Streptomycin 12-18 mg/kg AND
- Agent 3: Levofloxacin 7.5-10 mg/kg OR Moxifloxacin 7.5-10 mg/kg OR Ofloxacin 15-20 mg/kg/day q12h (Maximum: 800 mg)
- Agent 4: Ethionamide 15-20 mg/kg/day q12h (Maximum: 1000 mg) OR Protionamide 15-20 mg/kg/day q12h (Maximum: 1000 mg) OR Cycloserine 10-20 mg/kg (Maximum: 1000 mg) OR Terizidone 10-20 mg/kg (Maximum: 1000 mg) OR Para-aminosalicylic acid 150 mg/kg/day q8-12h(Maximum: 12,000 mg)
- 3. XDR Tuberculosis 
- 3.1 Adult
- Preferred regimen: 3 agents combination
- Agent 1: Pyrazinamide 2030 mg/kg OR Ethambutol 1525 mg/kg OR Rifabutin 5 mg/kg
- Agent 2: Ethionamide 15-20 mg/kg OR Protionamide 15-20 mg/kg OR Cycloserine 10-15 mg/kg OR Terizidone 10-20 kg/mg OR Para-aminosalicylic acid 8-12 g/day q8-12h
- Agent 3: Clofazimine 50 mg/d AND 300 mg once a month OR Amoxicillin/clavulanate 500 mg/125 mg q12h OR Linezolid 300-600 mg OR Imipenem 500mg q6h OR Clarithromycin 500-1000 mg q12h OR Thioacetazone 2.5 mg/kg OR Isoniazid (high-dose) 1620 mg/kg
- 3.2 Pediatric
- Preferred regimen: 3 agents combination
- Agent 1: Pyrazinamide 20-30 mg/kg (Maximum: 600 mg) OR Ethambutol 15 mg/kg OR Rifabutin 5 mg/kg
- Agent 2: Ethionamide 15-20 mg/kg (Maximum: 1000 mg) OR Protionamide 15-20 mg/kg (Maximum: 1000 mg) OR Cycloserine 10-20 mg/kg (Maximum: 1000 mg) OR Terizidone 10-20 mg/kg (Maximum: 1000 mg) OR Para-aminosalicylic acid 150 mg/kg/day q8-12h
- Agent 3: Clofazimine 50 mg/d AND 300 mg once a month OR Amoxicillin/clavulanate OR Linezolid 300-600 mg OR Imipenem 500mg q6h OR Clarithromycin 500-1000 mg q12h OR Thioacetazone 2.5 mg/kg OR Isoniazid (high-dose) 1620 mg/kg
- Mycobacterium abscessus Return to Top
- 1.Limited, localized extrapulmonary disease  
- Preferred regimen: Clarithromycin 500 mg PO bid  Amikacin 10-15 mg/kg/day IV or 25 mg/kg three times weekly for 4 months
- Alternative regimen (1): Amikacin AND Cefoxitin 12 g/day PO for two weeks
- Note: until clinical improvement in severe cases
- Alternative regimen (2): Amikacin AND Imipenem 500 mg IV q6-8h for two weeks
- Note(1): Until clinical improvement in severe cases
- Note(2): Osteomyelitis should be treated for as least 6 months; Infected foreign bodies should be removed
- 2.Pulmonary or serious extrapulmonary disease
- Preferred regimen: Clarithromycin 500 mg PO bid AND Amikacin 15 mg/kg/day IV AND Cefoxitin 2g IV q4h OR Imipenem 1g IV q6h for at least 2-4 months
- Note: If limited by adverse effects THEN Clarithromycin 500 mg PO bid or 1000 mg XR qd OR Azithromycin 250 mg PO qd
- Alternative regimen(1): Tigecycline 100 mg IV loading dose THEN 50 mg IV q12h
- Note: could be substituted as one of the injectables
- Alternative regimen(2): Linezolid 600 mg PO bid or 600 mg PO qd AND Clarithromycin
- Note: Could replace parental tx if not tolerated or feasible
- Mycobacterium bovis Return to Top
- Mycobacterium bovis 
- Note: Is intrinsically resistant to Pyrazinamide (PZA). The treatment of M. bovis is extrapolated from experience with the treatment of PZA-resistant M. tuberculosis
- 1. Pulmonary and most extrapulmonary disease
- Preferred regimen: Isoniazid AND Rifampin AND Ethambutol for 2 months, followed by Isoniazid AND Rifampin for 7 months
- 2. Meningitis
- Preferred regimen: Isoniazid AND Rifampin AND Ethambutol for 2 months, followed by Isoniazid AND Rifampin for 10 months
- Mycobacterium avium-intracellulare Return to Top
- 1. Treatment of MAC pulmonary disease 
- 1.1 Patients with nodular/bronchiectatic disease
- Preferreday regimen: Clarithromycin 1,000 mg three times weekly OR Azithromycin 500600 mg three times weekly AND Ethambutol 25 mg/kg three times weekly AND Rifampin 600 mg three times weekly
- Note: Patients should be treated until culture negative on therapy for 1 year
- 1.2 Patients with fibrocavitary or severe nodular/bronchiectatic disease
- Preferreday regimen: Clarithromycin 5001,000 mg/day OR Azithromycin 250300 mg/day OR Rifampin 600 mg/day OR Rifabutin 150300 mg/day AND Ethambutol 15 mg/kg/day
- Note(1): Amikacin OR Streptomycin threetimes-weekly can be used early in therapy
- Note(2): Patients should be treated until culture negative on therapy for 1 year
- 2. Disseminateday MAC disease
- Preferreday regimen: Clarithromycin 1,000 mg/day OR Azithromycin 250 mg/day AND Ethambutol 15 mg/kg/day  Rifabutin 150350 mg/day
- Mycobacterium celatum Return to Top
- Mycobacterium celatum 
- Preferred regimen: Clarithromycin AND Ethambutol AND Ciprofloxacin  Rifabutin
- Mycobacterium chelonae Return to Top
- Mycobacterium chelonae 
- 1. Localized infections
- Preferred regimen: Clarithromycin 500 mg PO bid
- Alternative regimen: Azithromycin
- 2. Disseminated or extensive disease
- 2.1 monotherapy
- Preferred regimen: Clarithromycin 500 mg PO bid for 6 months
- 2.2 multidrug therapy
- preferred regimen: Clarithromycin 500 mg PO bid AND Tobramycin 5 mg/kg IV q24h OR Imipenem 0.5-1 g IV q6h OR Linezolid 600 mg IV/PO q12h/bid for 4-8 weeks
- Alternative regimen: Moxifloxacin 400 mg PO qd AND Linezolid 600 mg PO bid
- Note(1): During initial treatment, multidrug therapy may prevent development of acquired resistance
- Note(2): Total treatment duration is 6 months
- 3. Keratitis (LASIK-related)
- Preferred regimen: Clarithromycin 500 mg PO bid AND Tobramycin 0.3% 2 gtts q4h AND Gatifloxacin 0.3% 1 gtt q4h OR Moxifloxacin 0.5% 1 gtt q4h
- Mycobacterium foruitum Return to Top
- Mycobacterium foruitum 
- 1. In vitro isolates
- Susceptible agents: Amikacin (100%), Ciprofloxacin and Ofloxacin (100%), Sulfonamides (100%), Cefoxitin (50%), Imipenem (100%), Clarithromycin (80%), and Doxycycline (50%)
- 2. Disease
- 2.1 M. fortuitum lung disease
- At least two agents with in vitro activity against the clinical isolate should be given for at least 12 months of negative sputum cultures
- 2.2 Serious skin, bone, and soft tissue M fortuitum disease
- At least two agents with in vitro activity against the clinical isolate should be given for a minimum of 4 months; For bone infections, 6 months of therapy is recommended
- Mycobacterium haemophilum Return to Top
- Mycobacterium haemophilum 
- 1. In vitro
- Susceptible: Amikacin, Clarithromycin, Ciprofloxacin, Rifampin, and Rifabutin
- Less susceptible: Doxycycline and Sulfonamides
- 2. Infection
- 2.1 Disseminated disease
- Preferred regimen: Clarithromycin AND Rifampin AND Rifabutin AND Ciprofloxacin
- Mycobacterium genavense Return to Top
- Mycobacterium genavense 
- Susceptibility: Amikacin, Rifamycin, Fluoroquinolones, Streptomycin, and Macrolides
- Note(1): Ethambutol has limited activity
- Note(2): Optimal therapy is not determined, but multidrug therapies including Clarithromycin appear to be more effective than those without Clarithromycin
- Mycobacterium gordonae Return to Top
- Mycobacterium gordonae 
- Preferred regimen: Ethambutol OR Rifabutin OR Clarithromycin OR Linezolid OR Fluoroquinolones
- Mycobacterium kansasii Return to Top
- Mycobacterium kansasii 
- 1. pulmonary disease
- Preferred regimen: Rifampin 10 mg/kg/day (Maximum, 600 mg) PO AND Ethambutol 15 mg/kg/ day PO AND Isoniazid 5 mg/kg/day (Maximum 300 mg) PO AND Pyridoxine 50 mg/day PO
- Note: Treatment duration for M. kansasii lung disease should include 12 months of negative sputum cultures
- 2. Rifampin-resistant M. kansasii disease
- Preferred regimen: Clarithromycin OR Azithromycin OR Moxifloxacin OR Ethambutol OR Sulfamethoxazole OR Streptomycin
- Note(1): Use three-drug regimen
- Note(2): Patients undergoing therapy for M. kansasii lung disease should have close clinical monitoring with frequent sputum examinations for mycobacterial culture throughout therapy
- 3. Disseminated M. kansasii disease
- Note: The treatment regimen for disseminated disease should be the same as for pulmonary disease
- Mycobacterium marinum Return to Top
- Mycobacterium marinum 
- 1. In vitro M. marinum isolates
- Susceptible: Rifampin, Rifabutin, Ethambutol, Clarithromycin, Sulfonamides, and Trimethoprim sulfamethoxazole
- Intermediately susceptible: Streptomycin, Doxycycline, and Minocycline
- Resistant: Isoniazid and Pyrazinamide
- Note: Two active agents for 1 to 2 months after resolution of symptoms, typically 3 to 4 months in total
- 2. Infection
- 2.1 skin and soft tissue infections
- Preferred regimen (1): Clarithromycin AND Ethambutol
- Preferred regimen (2): Ethambutol AND Rifampin
- Note: Azithromycin can replace Clarithromycin
- 2.2 osteomyelitis or deep structure infection
- Preferred regimen: Clarithromycin AND Ethambutol AND Rifampin
- Mycobacterium scrofulaceum Return to Top
- Mycobacterium scrofulaceum 
- Susceptibility data are lacking and standard treatment regimens for M. scrofulaceum are controversial, emphasizing the need to perform susceptibility testing on confirmed disease-producing isolates of M. scrofulaceum
- Mycobacterium simiae Return to Top
- Mycobacterium simiae 
- Preferred regimen: Clarithromycin AND Moxifloxacin AND Trimethoprim/sulfamethoxazole
- Mycobacterium ulcerans Return to Top
- Mycobacterium ulcerans 
- 1. Preulcerative lesions
- Excision and primary closure, Rifampin monotherapy, or heat therapy
- 2. Established ulcers
- Most antimycobacterial agents are ineffective for the treatment of the ulcer; Surgical debridement combined with skin grafting is the usual treatment of choice
- 3. Control complications of the ulcer
- Preferred regimen: Clarithromycin AND Rifampin
- Mycobacterium xenopi Return to Top
- Mycobacterium xenopi 
- 1. The cornerstone of therapy for M. xenopi
- Preferred regimen: Clarithromycin AND Rifampin AND Ethambutol
- Note: Therapy should be continued until the patient has maintained negative sputum cultures while on therapy for 12 months
- 2. Pulmonary disease
- Preferred regimen: INH AND Rifabutin OR Rifampin AND Ethambutol AND Clarithromycin  Streptomycin
- Note: A quinolone, preferably Moxifloxacin, could be substituted for one of the antituberculous drugs
- 3. Extrapulmonary disease
- Note: Therapy for extrapulmonary disease would include the same agents as for pulmonary disease
- Mycobacterium leprae Return to Top
- Mycobacterium leprae 
- 1. Multibacillary Leprosy (Skin smear positive)
- 1.1 Adult
- Preferred regimen: Dapsone 100 mg/day PO AND Rifampin 600 mg PO 4 times per week AND Clofazimine 50 mg PO qd for 12-24 months
- Note: Clofazimine should be supplemented by loading dose 300 mg PO monthly
- 1.2 Pediatric
- 1.2.1 < 35 kg
- Preferred regimen: Dapsone 1-2 mg/kg/day PO AND Rifampin 450 mg PO for 12-24 months
- 1.2.2 < 20 kg
- Preferred regimen: Dapsone 1-2 mg/kg/day PO AND Rifampin 300 mg PO for 12-24 months
- 1.2.3 < 12 kg
- Preferred regimen: Dapsone 1-2 mg/kg/day PO AND Rifampin 150 mg PO for 12-24 months
- 2. Paucibacillary Leprosy (Skin Smear negative)
- Preferred regimen: Rifampin 600 mg PO once a month for 6 months AND Dapsone 100 mg PO qd for 6 months
- 3. Erythema Nodosum Leprosum (ENL)
- 3.1 Mild
- Preferred regimen: Rest affect limb, analgesics, follow-up twice a week, check for iridocyclitis; Chloroquine OR Aspirin may be useful
- 3.2 Severe (numerous nodules + fever, ulcerating/pustular ENL, visceral involvement, nodules + neuritis, recurrent ENL)
- Preferred regimen: Prednisolone 30-40 mg/day PO for 1-2 weeks THEN taper over 12 weeks
- Alternative regimen (1): (If unresponsive to corticosteroids or if risk of corticosteroids prevent administration) Clofazimine 100 mg PO tid for maximum of 12 weeks THEN taper the dose to 100 mg PO bid for 12 weeks THEN 100 mg qd for 12-24 weeks
- Alternative regimen (2): (if not contraindicated) Thalidomide 200-400 mg/day PO THEN 50-100 mg/day after 1-2 weeks
- 4. Reversal Reaction
- Preferred regimen: Prednisolone start with 40 mg/day PO THEN taper by 10 mg twice a week for 12 weeks
- Mycobacterium smegmatis Return to Top
- Mycobacterium smegmatis 
- 1. Mild disease
- Preferred regimen: Doxycycline PO AND Trimethoprim sulfamethoxazole PO
- 2. Severe disease
- Preferred regimen: Amikacin IV OR Imipenem IV
- Mycobacterium immunogenum Return to Top
- Mycobacterium immunogenum 
- In vitro
- Susceptible: Amikacin and Clarithromycin
- Resistant: Ciprofloxacin, Doxycycline, Cefoxitin, Tobramycin, and Sulfamethoxazole
- Note: The optimal therapy for this organism is unknown; however, successful therapy is likely difficult due to the extensive antibiotic resistance of the organism
- Mycobacterium malmoense  Return to Top
- Mycobacterium malmoense
- 1. In vitro
- Susceptible: Ethambutol, Ethionamide, Kanamycin, and Cycloserine
- Resistant: INH, Streptomycin, Rifampin, and Capreomycin
- 2. Pulmonary M. malmoense infection
- Preferred regimen: INH AND Rifampin AND Ethambutol  Quinolones AND Macrolides
- Mycobacterium mucogenicum Return to Top
- Mycobacterium mucogenicum 
- In vitro susceptible agents: Aminoglycosides, Cefoxitin, Clarithromycin, Minocycline, Doxycycline, Quinolones, Trimethoprim/sulfamethoxazole, and Imipenem
- Mycobacterium szulgai Return to Top
- Mycobacterium szulgai 
- 1. in vitro susceptibility
- M. szulgai is susceptible in vitro to most antituberculous drugs including Quinolones and newer Macrolides
- 2. Infection
- 2.1 Pulmonary infection
- Three- or four-drug regimen based on susceptibility that includes 12 months of negative sputum cultures while on therapy
- 2.2 Extrapulmonary infection
- Combination anti-tuberculous medications based on in vitro susceptibilities for 4-6 months
- Mycobacterium terrae Return to Top
- Mycobacterium terrae 
- 1. In vitro susceptibility
- All six of the isolates from a single center and 90% or more of an additional 22 isolates of M. terrae complex were susceptible to Ciprofloxacin and Sulfonamides. Recently, 11 isolates of M. terrae complex were also shown to be susceptible to Linezolid
- 2. Antimicrobial therapy
- Based on in vitro susceptibility results

### Parasites  Intestinal Protozoa
- Balantidium coli treatment
- Adult dosage:
- Preferred regimen: Metronidazole 750 mg PO tid for 5 days, Tetracycline 500 mg PO qid for 10 days
- Alternative regimen: Iodoquinol 650 mg PO tid for a 20-days
- Pediatric dosage:
- Preferred regimen: Metronidazole 35-50 mg/kg/day PO in three doses (maximum dosage: 2 g) for 5 days, Tetracycline 40 mg/kg/dose PO in four doses for 10 days.
- Alternative regimen: Iodoquinol 40 mg/kg/dose PO in three doses for 20 days AND Doxycycline.
- Note: Nitazoxanide, a broad-spectrum antiparasitic and antihelminthic drug, may be another treatment for balantidiosis.
- Blastocystis hominis Return to Top
- Blastocystis
- Preferred regimen (1): Metronidazole 750 mg PO tid or 1.5 g qd for 10 days
- Preferred regimen (2): Trimethoprim-sulfamethoxazole 1 DS PO bid or 2 DS PO qd for 7 days
- Preferred regimen (3): Iodoquinol 650 mg PO tid for 20 days
- Preferred regimen (4): Nitazoxanide 500 mg PO bid for 3 days
- Preferred regimen (5): Paromomycin 25-35 mg/kg/day PO tid for 7 days
- Note (1): Treatment of asymptomatic infections is unnecessary
- Note (2): One double strength tablet contains 160 mg trimethoprim/800 mg sulfamethoxazole
- Cryptosporidium parvum Return to Top
- 1. Immunocompetent
- Preferred regimen: No specific therapy recommended since healthy patients usually recover within a few weeks, but if needed: Nitazoxanide 500 mg PO bid for 3 days.
- 2. HIV
- Preferred regimen: Nitazoxanide 500 mg PO bid for 3 days
- 3. HIV and Immunodeficiency
- Preferred regimen: Effective antiretroviral therapy
- Note: Nitazoxanide is not licensed for immunodeficient patients
- Cryptosporidium hominis Return to Top
- 1. Immunocompetent
- Preferred regimen: No specific therapy recommended since healthy patients usually recover within a few weeks, but if needed: Nitazoxanide 500 mg PO bid for 3 days.
- 2. HIV
- Preferred regimen: Nitazoxanide 500 mg PO bid for 3 days
- 3. HIV and Immunodeficiency
- Preferred regimen: Effective antiretroviral therapy
- Note: Nitazoxanide is not licensed for immunodeficient patients
- Cyclospora cayetanensis Return to Top
- Cyclospora cayetanensis
- Preferred regimen: Trimethoprim-sulfamethoxazole one double-strength tablet PO bid for 7-10 days
- Alternative regimen(1): Ciprofloxacin 500 mg PO bid for 7 days
- Alternative regimen(2): Nitazoxanide 500 mg PO bid for 7 days
- Note(1): One double-strength tablet (160 mg TMP/800 mg SMX) .
- Note(2): Treatment is continued for 7 days in immunocompetent hosts and for 7 to 10 days in patients with HIV infection.
- Dientamoeba fragilis Return to Top
- Dientamoebiasis
- Preferred regimen: Iodoquinol 650 mg PO tid for 20 days
- Alternative regimen (1): Paromomycin 2535 mg/kg/day PO in three divided doses for 7 days
- Alternative regimen (2): Metronidazole 500750 mg PO tid for 10 days
- Alternative regimen (3): Tetracycline 500 mg PO qid for 10 days
- 1.1 Treatment in pregnancy
- The use of Iodoquinol in pregnancy is limited, and risk to the embryo-fetus is unknown, should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
- Oral dose of Paromomycin generally is poorly absorbed from the gastrointestinal tract, with minimal, if any, systemic availability.
- Metronidazole is in pregnancy category B. Data on the use of this drug in pregnant women are conflicting. The available evidence suggests use during pregnancy has a low risk of congenital anomalies. May be used during pregnancy in those patients who will clearly benefit from the drug, although its use in the first trimester is generally not advised.
- 1.2 Treatment during lactation
- Iodoquinol should be used with caution in breastfeeding women.
- Oral dose of Paromomycin is unlikely to be excreted in breast milk, and the drug generally is poorly absorbed from the gastrointestinal tract.
- Metronidazole should be used during lactation only if the potential benefit of therapy to the mother justifies the potential risk to the infant.
- 1.3 Treatment in pediatric patients
- Iodoquinol 3040 mg/kg/day (maximum 2 g) PO in 3 doses for 20 days. The safety of iodoquinol in children has not been established.
- Paromomycin 2535 mg/kg/day PO in 3 doses for 7 days. The safety of oral dose in children has not been formally evaluated. However, the safety profiles likely are comparable in children and adults.
- Metronidazole 3550 mg/kg/day PO in 3 doses for 10 days. The safety in children has not been established, is listed as an antiamebic and antigiardiasis medicine on the WHO Model List of Essential Medicines for Children, intended for the use of children up to 12 years of age.
- Tetracycline 40 mg/kg/day (maximum 2 g) PO in 4 doses for 10 days
- Entamoeba histolytica Return to Top
- 1. Amebic Liver Abscess
- Preferred regimen: (Metronidazole 750 mg PO tid for 10 days OR Tinidazole 2 g PO qd for 5 days) AND (Paromomycin 30 mg/kg/day PO tid for 5-10 days OR Diloxanide furoate 500 mg PO tid for 10 days)
- Alternative regimen (1): Nitazoxanide 500 mg bid for 10 days AND (Paromomycin 30 mg/kg/day PO tid for 5-10 days OR Diloxanide furoate 500 mg PO tid for 10 days)
- Alternative regimen (2): Tinidazole 2 g PO qd for 5 days AND (Paromomycin 30 mg/kg/day PO tid for 5-10 days OR Diloxanide furoate 500 mg PO tid for 10 days)
- Alternative regimen (2): Tinidazole 2 g PO qd for 5 days
- 2. Amebic Colitis
- Preferred regimen: Metronidazole 500-750 mg PO tid for 7-10 days. Pediatric dose: 35-50 mg/kg per day tid AND (Paromomycin 30 mg/kg/day PO tid for 5-10 days OR Diloxanide furoate 500 mg PO tid for 10 days)
- Alternative regimen: Tinidazole 2 g PO qd for 5 days AND (Paromomycin 30 mg/kg/day PO tid for 5-10 days OR Diloxanide furoate 500 mg PO tid for 10 days)
- 3. Asymptomatic Intestinal Colonization
- Preferred regimen: Paromomycin 30 mg/kg/day PO tid for 5-10 days
- Alternative regimen (1): Diloxanide furoate 500 mg PO tid for 10 days
- Alternative regimen (2): Diiodohydroxyquin 650 mg PO tid for 20 days for adults and 30 to 40 mg/kg per day tid for 20 days for children
- Giardia lamblia Return to Top
- 1. Giardiasis
- 1.1 Adult
- Preferred regimen (1): Metronidazole 250 mg tid 57 days
- Preferred regimen (2): Tinidazole 2 g single dose
- Preferred regimen (3): Nitazoxanide 500 mg PO bid (with food)
- Alternative regimen (1): Paromomycin 500 mg tid 3 510 days
- Alternative regimen (2): Quinacrine 100 mg tid 3 57 days
- Alternative regimen (3): Furazolidone 100 mg qid 3 710 days
- 1.2 Pediatric
- Preferred regimen (1): Metronidazole 5 mg/kg tid 3 57 days
- Preferred regimen (2): Tinidazole 50 mg/kg single dose (max, 2 g)
- Preferred regimen (3): Nitazoxanide 100 mg PO bid for age 1-3 years or 200 mg PO bid for age 4-11 years (with food)
- Alternative regimen (1): Paromomycin 30 mg/kg/day in 3 doses 3 510 days
- Alternative regimen (2): Quinacrine 2 mg/kg tid 3 7 days
- Alternative regimen (3): Furazolidone 2 mg/kg qid 3 10 days
- Cystoisospora belli Return to Top
- 1. Cystoisospora belli treatment
- 1.1 Immunocompetent hosts
- In the immunocompetent hosts, symptoms of Cystoisospora infection are usually self-limited.
- Antimicrobial therapy to immunocompetent patients may be considered if symptoms do not start to resolve spontaneously after 5 to 7 days (depending upon severity)
- Prefered regimen: Trimethoprim-sulfamethoxazole 160 mg/800 mg PO bid for 7-10 days
- Alternative regimen (1) (for patients who are allergic to or intolerant of TMP-SMX): Pyrimethamine 50-75 mg/day PO qd or divided in 2 equal doses AND Leucovorin 1025 mg PO qd
- Alternative regimen (2): Ciprofloxacin 500 mg PO bid for 7 days (second-line alternative)
- 1.1.1 In pregnancy
- TMP-SMX should be avoided near-term because of the potential for hyperbilirubinemia and kernicterus in the newborn.
- Ciprofloxacin should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.
- 1.1.2 During lactation
- TMP-SMX generally should be avoided by women when nursing infants who are premature, jaundiced, ill, or stressed, or who have glucose-6-phosphate dehydrogenase deficiency.
- The American Academy of Pediatrics classifies Ciprofloxacin as usually compatible with breastfeeding, whereas the World Health Organization recommends avoiding Ciprofloxacin while breastfeeding and CDC recommends Ciprofloxacin should be used during lactation only if the potential benefit justifies the potential risk to the fetus.
- 1.1.3 In pediatric patients
- The use of TMP-SMX in children less than 2 months of age generally is not recommended.
- Available evidence is conflicting regarding the potential for growth defects and arthropathies in exposed children. Use of Ciprofloxacin in children requires assessment of potential risks and benefits.
- 1.2 Immunocompromised hosts
- Preferred regimen (1): Trimethoprim-sulfamethoxazole 160 mg/800 mg PO/IV qid for 10 days
- Preferred regimen (2): Trimethoprim-sulfamethoxazole 160 mg/800 mg PO/IV bid for 7-10 days
- Note (1): One approach is to start with TMP-SMX (160 mg/800 mg) bid regimen first, and increase daily dose and/or duration (up to 34 weeks) if symptoms worsen or persist.
- Note (2): IV therapy is recommended for patients with potential or documented malabsorption.
- Alternative regimen (1): Pyrimethamine 5075 mg PO qd AND Leucovorin 1025 mg PO qd
- Alternative regimen (2): Ciprofloxacin 500 mg PO bid for 7 days
- 2. Cystoisospora belli prophylaxis
- 2.1 Primary prophylaxis
- Insufficient evidence is available to support a general recommendation for primary prophylaxis for Cystoisosporiasis per se, especially for U.S. travelers in isoporiasis-endemic areas.
- 2.2 Secondary prophylaxis (preventing recurrence in patients with CD4 count < 200 cells/mm3)
- Prefered regimen: Trimethoprim-sulfamethoxazole 160 mg/800 mg PO 3 times weekly
- Alternative regimen (1): Trimethoprim-sulfamethoxazole 160 mg/800 mg PO qd
- Alternative regimen (2): Trimethoprim-sulfamethoxazole 320 mg/1600 mg PO 3 times weekly
- Alternative regimen (3): Pyrimethamine 25 mg PO qd AND Leucovorin 510 mg PO qd
- Alternative regimen (4): Ciprofloxacin 500 mg PO 3 times weekly (second-line alternative)
- Note (1): Criteria for discontinuation of chronic maintenance therapy: sustained increase in CD4 count > 200 cells/mm3 for > 6 months in response to ART and without evidence of active Cystoisospora belli infection
- Note (2): Because of concerns about possible teratogenicity associated with first-trimester drug exposure, clinicians may withhold secondary prophylaxis during the first trimester and treat only symptomatic infection.
- Microsporidiosis Return to Top
- 1. Ocular
- Preferred regimen: Albendazole 400 mg PO bid for 3 weeks AND Fumagillin eye drops.
- 2. Intestinal (diarrhea)
- Preferred regimen:
- Adult: Albendazole 400 mg PO bid for 3 weeks  for E. intestinalis.
- Pediatric: Albendazole 15 mg/kg per day divided into 2 daily doses for 7 days  for E. intestinalis.
- Note: Fumagillin 20 mg PO tid is the only reported effective treatment for E. bieneusi.
- 3. Disseminated
- Preferred regimen: Albendazole 400 mg po bid for 3 weeks.

### Parasites  Extraintestinal Protozoa

# Acanthamoeba
- Acanthamoeba Return to Top
- 1. Granulomatous amoebic encephalitis, meningitis, and disseminated Acanthamoeba disease
- Preferred regimen (1): Pentamidine AND Itraconazole AND Sulfadiazine AND Flucytosine
- Preferred regimen (2): Sulfadiazine AND Fluconazole AND Pyrimethamine
- Preferred regimen (3): Sulfadiazine AND Flucytosine AND TMP-SMX
- Preferred regimen (4): TMP-SMX AND Rifampin AND Ketoconazole
- Preferred regimen (5): Miltefosine AND Amikacin
- Preferred regimen (6): Miltefosine AND Voriconazole
- Preferred regimen (7): Pentamidine AND Itraconazole AND Flucytosine AND Levofloxacin AND Amphotericin B AND Rifampin
- Preferred regimen (8): Pentamidine AND Fluconazole AND Miltefosine
- Note: The mainstay of successful treatment includes early diagnosis and combination therapy with pentamidine, azole, sulfonamide, miltefosine, and possibly flucytosine.
- 2. Cutaneous acanthamoebiasis
- Preferred regimen: Pentamidine AND Sulfadiazine AND Flucytosine AND (Itraconazole OR Fluconazole) AND Chlorhexidine topical AND Ketoconazole topical
- 3. Acanthamoeba keratitis
- Preferred regimen: (Polyhexamethylene biguanide topical OR Chlorhexidine topical)  (Propamidine topical OR Hexamidine topical)
- Note (1): Azole antifungal drugs (Ketoconazole, Itraconazole, Voriconazole) may be considered as oral or topical adjuncts.
- Note (2): The duration of therapy for Acanthamoeba keratitis may last six months to a year.
- Note (3): Pain control can be helped by topical cyclopegic solutions and oral nonsteroidal medications.
- Note (4): The use of corticosteroids to control inflammation is controversial.
- Note (5): Penetrating keratoplasty may help restore visual acuity.

# Balamuthia mandrillaris
- Balamuthia mandrillaris Return to Top
- 1. Granulomatous Amebic Encephalitis
- Preferred regimen (1): Pentamidine AND Flucytosine AND Fluconazole AND Sulfadiazine AND (Azithromycin OR Clarithromycin)
- Preferred regimen (2): Pentamidine AND Albendazole AND (Itraconazole OR Fluconazole) AND Miltefosine

# Naegleria fowleri
- Naegleria fowleri Return to Top
- Primary amoebic meningoencephalitis
- Preferred regimen: Amphotericin B 1.5 mg/kg/day bid for 3 days; then 1 mg/kg/day for 6 days AND 1.5 mg/day intrathecal for 2 days; then 1 mg/day intrathecal qd for 8 days.
- Note: Investigational drug called miltefosine  also available for treatment.

# Babesia microti
- Babesia microti Return to Top
- Babesiosis
- 1. Mild/moderate disease
- Preferred regimen: Atovaquone 750 mg PO bid AND Azithromycin 600 mg PO qd for 7-10 days
- 2. Severe disease:
- Preferred regimen: Clindamycin 600 mg PO tid AND Quinine 650 mg PO tid for 710 days
- Preferred regimen: Clindamycin 1.2 g IV q12h
- Note (1): For overwhelming infection in asplenic patients and immunocompromised patients, treat for 6 or more weeks.
- Note (2): Consider transfusion if 10% parasitemia.

# Leishmania
- Leishmania Return to Top
- Leishmaniasis
- 1. Cutaneous Leishmaniasis
- Different Leishmania species cause Old World versus New World (American) cutaneous leishmaniasis. In the Old World (the Eastern Hemisphere), the etiologic agents include Leishmania tropica, L. major, and L. aethiopica, as well as L. infantum and L. donovani. The main species in the New World (the Western Hemisphere) are either in the L. mexicana species complex (L. mexicana, L. amazonensis, and L. venezuelensis) or the subgenus Viannia (L.  braziliensis, L.  guyanensis, L.  panamensis, and L.  peruviana). The Viannia subgenus is also referred to as the L. (V.) braziliensis species complex.
- 1.1 Systemic Therapy (Parenteral)
- Preferred Regimen (1): Sodium stibogluconate 20 mg/kg IV/IM q24h for 10-20 days
- Preferred Regimen (2): Meglumine antimoniate 20 mg/kg IV/IM  q24h for 10-20 days
- Alternative Regimen (1): Liposomal amphotericin B 3 mg/kg/day IV infusion for 6-10 days
- Alternative Regimen (2): Pentamidine 2-3 mg/kg/day IV/IM for 4-7 days
- Note: Data supporting the use of amphotericin B for treatment of cutaneous and mucosal leishmaniasis are anecdotal; standard dosage regimens have not been established. In the United States, pentamidine isethionate is uncommonly used for treatment of cutaneous leishmaniasis. Its limitations include the potential for irreversible toxicity and variable effectiveness.
- 1.2 Systemic Therapy (Oral)
- 1.2.1 Adults and adolescents at least 12 years of age, who weigh from 33-44 kg
- Preferred Regimen:Miltefosine 50 mg PO q12h for 28 days
- 1.2.2 Adults and adolescents at least 12 years of age, who weigh  >45 kg
- Preferred Regimen:Miltefosine 50 mg PO q8h for 28 days
- Alternative Regimen (1): Ketoconazole 600 mg qd for 28 days OR qd for 6 weeks
- Alternative Regimen (2): Fluconazole 200 mg qd for 6 weeks
- Note:The FDA-approved indications are limited to infection caused by three particular species, all three of which are New World species in the Viannia subgenusnamely, Leishmania (V.) braziliensis, L. (V.) panamensis, and L. (V.) guyanensis.  The "azoles" showed modest activity against some Leishmania species in some cases, but are not FDA approved
- 1.3 Local Therapy
- List of possible local therapies
- Cryotherapy (with liquid nitrogen OR Thermotherapy (use of localized current field radiofrequency heat) OR Intralesional administration of SbV OR Topical application of Paromomycin (such as an ointment containing 15% Paromomycin/12% methylbenzethonium chloride in soft white paraffin)
- 2. Visceral Leishmaniasis
- Visceral leishmaniasis usually is caused by the species L. donovani and L. infantum (L. chagasi generally is considered synonymous with L. infantum)
- 2.1 Systemic Therapy (Parenteral)
- Preferred Regimen (1): Liposomal amphotericin B 3 mg/kg/day IV for 5 days, then once on day 14 and once on day 21  (Total dose: 21 mg/kg)
- Preferred Regimen (2): Sodium stibogluconate 20 mg/kg IV/IM q24h for 28 days
- Preferred Regimen (3): Meglumine antimoniate 20 mg/kg IV/IM q24h for 28 days
- Alternative Regimen: Amphotericin B deoxycholate 0.5-1 mg/kg IV  q24h (Total dose: 15-20 mg/kg)
- Note: In immunosuppressed patients, dose is 4 mg/kg/day for 5 days, then once on day 10,  17, 24, 31, and 38  (Total dose: 40 mg/kg)
- 2.2 Systemic Therapy (Oral)
- 2.2.1 Adults and adolescents at least 12 years of age, who weigh from 33-44 kg
- Preferred Regimen: Miltefosine 50 mg PO q12h for 28 days
- 2.2.2 Adults and adolescents at least 12 years of age, who weigh >45 kg
- Preferred Regimen: Miltefosine 50 mg PO q8h for 28 days

# Plasmodium
- Plasmodium Return to Top
- 1. Plasmodium falciparum
- 1.1 Treatment of uncomplicated P. falciparum malaria
- 1.1.1 Treat children and adults with uncomplicated P. falciparum malaria (except pregnant women in their first trimester) with one of the following recommended ACT (artemisinin-based combination therapy)
- Preferred regimen (1):  Artemether 524 mg/kg/day PO bid AND Lumefantrine 29144 mg/kg/day PO bid for 3 days.
- Note: The first two doses should, ideally, be given 8 h apart.
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 15-     Artemether 20 mg PO bid AND Lumefantrine 120 mg PO bid  for 3 days
- Body weight (kg)-15 to < 25-    Artemether 40 mg PO bid AND Lumefantrine 240 mg PO bid  for 3 days
- Body weight (kg)-25 to < 35-    Artemether 60 mg PO bid AND Lumefantrine 360 mg PO bid  for 3 days
- Body weight (kg)    35-       Artemether 80 mg PO bid AND Lumefantrine 480 mg PO bid  for 3 days
- Preferred regimen (2): Artesunate 210 mg/kg/day PO qd AND Amodiaquine 7.515 mg/kg/day PO qd for 3 days
- Note: A total therapeutic dose range of 630 mg/kg/day artesunate and 22.545 mg/kg/day per dose amodiaquine is recommended.
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-4.5 to < 9-   Artesunate 25 mg PO qd AND Amodiaquine 67.5 mg PO qd  for 3 days
- Body weight (kg)-9 to < 18 -   Artesunate 50 mg PO qd AND Amodiaquine 135 mg PO qd for 3 days
- Body weight (kg)-18 to < 36-   Artesunate 100 mg PO qd AND Amodiaquine 270 mg PO qd for 3 days
- Body weight (kg)    36 -         Artesunate 200 mg PO qd AND Amodiaquine 540 mg PO qd for 3 days
- Preferred regimen (3): Artesunate 210 mg/kg/day PO qd AND Mefloquine 210 mg/kg/day PO qd for 3 days
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 9-      Artesunate 25 mg PO qd AND Mefloquine 55 mg PO qd  for 3 days
- Body weight (kg)-9to < 18-      Artesunate 50 mg PO qd AND Mefloquine 110 mg PO qd for 3 days
- Body weight (kg)-18 to < 36-   Artesunate 100 mg PO qd AND Mefloquine 220 mg PO qd for 3 days
- Body weight (kg)-  36  -      Artesunate 200 mg PO qd AND Mefloquine 440 mg PO qd for 3 days
- Preferred regimen (4): Artesunate 210 mg/kg/day PO qd for 3 days AND Sulfadoxine-Pyrimethamine  1.25 (2570 / 1.253.5) mg/kg/day  PO given as a single dose on day 1
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 10-      Artesunate 25 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 250/12 mg PO given as a single dose on day 1
- Body weight (kg)-10 to < 25-    Artesunate 50 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 500/25 mg PO given as a single dose on day 1
- Body weight (kg)-25 to < 50-      Artesunate 100 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 1000/50 mg PO given as a single dose on day 1
- Body weight (kg)-    50-         Artesunate 200 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 1500/75 mg PO given as a single dose on day 1
- Preferred regimen (5): Dihydroartemisinin 210 mg/kg/day PO qd AND Piperaquine1627 mg/kg/day PO qd for 3 days
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 8-     Dihydroartemisinin 20 mg PO qd AND  Piperaquine 160 mg PO qd for 3 days
- Body weight (kg)-8 to < 11-      Dihydroartemisinin 30 mg PO qd AND  Piperaquine 240 mg PO qd for 3 days
- Body weight (kg)-11 to < 17 -      Dihydroartemisinin 40 mg PO qd AND  Piperaquine 320 mg PO qd for 3 days
- Body weight (kg)-17 to < 25-      Dihydroartemisinin 60 mg PO qd AND  Piperaquine 480 mg PO qd for 3 days
- Body weight (kg)-25 to < 36-       Dihydroartemisinin 80 mg PO qd AND  Piperaquine 640 mg PO qd for 3 days
- Body weight (kg)-36 to < 60-      Dihydroartemisinin 120 mg PO qd AND  Piperaquine 960 mg PO qd for 3 days
- Body weight (kg)-60 < 80 -       Dihydroartemisinin 160 mg PO qd AND  Piperaquine 1280 mg PO qd for 3 days
- Body weight (kg)- >80-      Dose of Dihydroartemisinin 200 mg PO qd AND  Piperaquine 1600 mg PO qd for 3 days
- 1.1.2 Reducing the transmissibility of treated P. falciparum infections In low-transmission areas in  patients with P. falciparum malaria (except pregnant women, infants aged < 6 months and women breastfeeding infants aged < 6 months)
- Preferred regimen: Single dose of 0.25 mg/kg Primaquine with ACT
- 1.2 Recurrent Falciparum Malaria
- 1.2.1 Failure within 28 days
- Note:The recommended second-line treatment is an alternative ACT known to be effective in the region. Adherence to 7-day treatment regimens (with artesunate or quinine both of which should be co-administered with + tetracycline, or doxycycline or clindamycin) is likely to be poor if treatment is not directly observed; these regimens are no longer generally recommended.
- 1.2.2 Failure after 28 days
- Note: all presumed treatment failures after 4 weeks of initial treatment should, from an operational standpoint, be considered new infections and be treated with the first-line ACT. However, reuse of mefloquine within 60 days of first treatment is associated with an increased risk for neuropsychiatric reactions, and an alternative ACT should be used.
- 1.3 Reducing the transmissibility of treated P. falciparum infections In low-transmission areas in  patients with P. falciparum malaria (except pregnant women, infants aged < 6 months and women breastfeeding infants aged < 6 months)
- Note: Single dose of 0.25 mg/kg bw Primaquine with ACT
- 1.4 Treating uncomplicated P. falciparum malaria in special risk groups
- 1.4.1 Pregnancy
- First trimester of pregnancy : Quinine AND Clindamycin 10mg/kg/day PO bid for 7 days
- Second and third trimesters : Mefloquine is considered safe for the treatment of malaria during the second and third trimesters; however, it should be given only in combination with an artemisinin derivative.
- Note (1): Quinine is associated with an increased risk for hypoglycaemia in late pregnancy, and it should be used (with clindamycin) only if effective alternatives are not available.
- Note (2): Primaquine and tetracyclines should not be used in pregnancy.
- 1.4.2 Infants less than 5kg body weight :  with an ACT at the same mg/kg bw target dose as for children weighing 5 kg.
- 1.4.3 Patients co-infected with HIV: should avoid Artesunate + SP if they are also receiving Co-trimoxazole, and avoid Artesunate AND Amodiaquine if they are also receiving efavirenz or zidovudine.
- 1.4.4 Large and Obese adults: For obese patients, less drug is often distributed to fat than to other tissues; therefore, they should be dosed on the basis of an estimate of lean body weight, ideal body weight. Patients who are heavy but not obese require the same mg/kg bw doses as lighter patients.
- 1.4.5 Patients co-infected with TB: Rifamycins, in particular rifampicin, are potent CYP3A4 inducers with weak antimalarial activity. Concomitant administration of rifampicin during quinine treatment of adults with malaria was associated with a significant decrease in exposure to quinine and a five-fold higher recrudescence rate
- 1.4.6 Non-immune travellers : Treat travellers with uncomplicated P. falciparum malaria returning to nonendemic settings with an ACT.
- 1.4.7 Uncomplicated hyperparasitaemia: People with P. falciparum hyperparasitaemia are at increased risk of treatment failure, severe malaria and death so should be closely monitored, in addition to receiving an ACT.
- 2. Treatment of uncomplicated malaria caused by P. vivax, P. ovale, P. malariae or P. knowlesi
- 2.1  Blood Stage infection
- 2.1.1.  Uncomplicated malaria caused by P. vivax
- 2.1.1.1 In areas with chloroquine-sensitive P. vivax
- Preferred regimen: Chloroquine total dose of 25 mg/kg PO. Chloroquine is given at an initial dose of 10 mg/kg, followed by 10 mg/kg on the second day and 5 mg/kg on the third day.
- 2.1.1.2 In areas with chloroquine-resistant P. vivax
- Note: ACTs containing Piperaquine, Mefloquine OR Lumefantrine are the recommended treatment, although Artesunate + Amodiaquine may also be effective in some areas. In the systematic review of ACTs for treating P. vivax malaria, Dihydroartemisinin + Piperaquine provided a longer prophylactic effect than ACTs with shorter half-lives (Artemether + Lumefantrine, Artesunate + Amodiaquine), with significantly fewer recurrent parasitaemias during 9 weeks of follow-up.
- 2.1.2 Uncomplicated malaria caused by P. ovale, P. malariae or P. knowlesi malaria
- Note: Resistance of P. ovale, P. malariae and P. knowlesi to antimalarial drugs is not well characterized, and infections caused by these three species are generally considered to be sensitive to chloroquine. In only one study, conducted in Indonesia, was resistance to chloroquine reported in P. malariae. The blood stages of P. ovale, P. malariae and P. knowlesi should therefore be treated with the standard regimen of ACT or Chloroquine, as for vivax malaria.
- 2.1.3 Mixed malaria infections
- Note: ACTs are effective against all malaria species and so are the treatment of choice for mixed infections.
- 2.2 Liver stages (hypnozoites) of P. vivax and P. ovale
- Note: To prevent relapse, treat P. vivax or P. ovale malaria in children and adults (except pregnant women, infants aged < 6 months, women breastfeeding infants < 6 months, women breastfeeding older infants unless they are known not to be G6PD deficient and people with G6PD deficiency) with a 14-day course of primaquine in all transmission settings. Strong recommendation, high-quality evidence In people with G6PD deficiency, consider preventing relapse by giving primaquine base at 0.75 mg base/kg bw once a week for 8 weeks, with close medical supervision for potential primaquine-induced adverse haematological effects.]
- 2.2.1 Primaquine for preventive relapse
- Preferred regimen: Primaquine 0.250.5 mg/kg/day PO qd for 14 days
- 2.2.2 Primaquine and glucose-6-phosphate dehydrogenase deficiency
- Preferred regimen: Primaquine 0.75 mg base/kg/day PO once a week for 8 weeks.
- Note: The decision to give or withhold Primaquine should depend on the possibility of giving the treatment under close medical supervision, with ready access to health facilities with blood transfusion services.
- 2.2.3 Prevention of relapse in pregnant or lacating women and infants
- Note: Primaquine is contraindicated in pregnant women, infants < 6 months of age and in lactating women (unless the infant is known not to be G6PD deficient).
- 3. Treatment of severe malaria
- 3.1 Treatment of severe falciparum infection with Artesunate
- 3.1.1 Adults and children with severe malaria (including infants, pregnant women in all trimesters and lactating women):-
- Preferred regimen: Artesunate IV/IM for at least 24 h and until they can tolerate oral medication. Once a patient has received at least 24 h of parenteral therapy and can tolerate oral therapy, complete treatment with 3 days of an ACT (add single dose Primaquine in areas of low transmission).
- 3.1.2 Young children weighing < 20 kg
- Preferred regimen:Artesunate 3 mg/kg per dose IV/IM q24h
- Alternatives regimen: use Artemether in preference to quinine for treating children and adults with severe malaria
- 3.2.Treating cases of suspected severe malaria pending transfer to a higher-level facility (pre-referral treatment)
- 3.2.1 Adults and children
- Preferred regimen: Artesunate IM q24h
- Alternative regimen: Artemether IM OR Quinine IM
- 3.2.2  Children < 6 years
- Preferred regimen: Where intramuscular injections of artesunate are not available, treat with a single rectal dose (10 mg/kg) of Artesunate, and refer immediately to an appropriate facility for further care.
- Note: Do not use rectal artesunate in older children and adults.
- 3.3 Pregancy
- Note: Parenteral artesunate is the treatment of choice in all trimesters. Treatment must not be delayed.
- 3.4 Treatment of severe P. Vivax infection
- Note: parenteral artesunate, treatment can be completed with a full treatment course of oral ACT or chloroquine (in countries where chloroquine is the treatment of choice). A full course of radical treatment with primaquine should be given after recovery.
- 3.5 Additional aspects of management in severe malaria
- Fluid therapy:  It is not possible to give general recommendations on fluid replacement; each patient must be assessed individually and fluid resuscitation based on the estimated deficit.
- Blood Transfusion :In high-transmission settings, blood transfusion is generally recommended for children with a haemoglobin level of < 5 g/100 mL(haematocrit < 15%). In low-transmission settings, a threshold of 20% (haemoglobin,7 g/100 mL) is recommended.
- Exchange blood transfusion: Exchange blood transfusion requires intensive nursing care and a relatively large volume of blood, and it carries significant risks. There is no consensus on the indications, benefits and dangers involved or on practical details such as the volume of blood that should be exchanged. It is, therefore, not possible to make any recommendation regarding the use of exchange blood transfusion.

# Toxoplasma gondii
- Toxoplasma gondii Return to Top
- Toxoplasma gondii (treatment)
- 1. Lymphadenopathic toxoplasmosis
- Preferred regimen: Treatment of immunocompetent adults with lymphadenopathic toxoplasmosis is rarely indicated; this form of the disease is usually self-limited.
- 2. Ocular disease
- 2.1 Adults
- Preferred regimen: Pyrimethamine 100 mg PO for 1 day as a loading dose, then 25 to 50 mg/day AND Sulfadiazine 1 g PO qid AND folinic acid (Leucovorin 5-25 mg PO with each dose of Pyrimethamine
- 2.2 Pediatric
- Preferred regimen: Pyrimethamine 2 mg/kg PO first day then 1 mg/kg each day AND Sulfadiazine 50 mg/kg PO bid AND folinic acid (Leucovorin 7.5 mg/day PO ) for 4 to 6 weeks followed by reevaluation of the patient's condition
- Alternative regimen: The fixed combination of Trimethoprim with Sulfamethoxazole  has been used as an alternative.
- Note: If the patient has a hypersensitivity reaction to sulfa drugs, Pyrimethamine AND  Clindamycin can be used instead.
- 3. Maternal and fetal infection
- 3.1 First and early second trimesters
- Preferred regimen: Spiramycin is recommended
- 3.2 Late second and third trimesters
- Preferred regimen: Pyrimethamine/Sulfadiazine AND Leucovorin for women with acute T. gondii infection diagnosed at a reference laboratory during gestation.
- 3.3 Infant
- Note: If the infant is likely to be infected, then treatment with drugs such as Pyrimethamine, Atovaquone, Sulfadiazine, Leucovorin  is typical. Congenitally infected newborns are generally treated with pyrimethamine, a sulfonamide, and leucovorin for 1 year.
- 4. Toxoplasma gondii Encephalitis in AIDS
- 4.1 Treatment for acute infection
- 4.1.1 Patients with weight <60 kg
- Preferred regimen: Pyrimethamine 200 mg PO 1 time, followed by Pyrimethamine 50 mg PO qd AND Atovaquone AND Sulfadiazine 1000 mg PO q6h AND Leucovorin 1025 mg PO qd,
- 4.1.2  Patients with weight 60 kg
- Preferred regimen: Pyrimethamine 200 mg PO 1 time, followed by Pyrimethamine 75 mg PO qd AND Sulfadiazine 1500 mg PO q6h AND Leucovorin 1025 mg PO qd and Leucovorin dose can be increased to 50 mg qd or bid
- Alternative regimen (1): Pyrimethamine AND Leucovorin AND Clindamycin 600 mg IV/ PO q6h
- Alternative regimen (2): TMP-SMX (TMP 5 mg/kg and SMX 25 mg/kg ) IV/PO bid
- Alternative regimen (3): Atovaquone 1500 mg PO bid AND Pyrimethamine AND Leucovorin
- Alternative regimen (4): Atovaquone1500 mg PO bid AND sulfadiazine 10001500 mg PO q6h (weight-based dosing, as in preferred therapy)
- Alternative regimen (5): Atovaquone 1500 mg PO bid
- Alternative regimen (6): Pyrimethamine AND Leucovorin AND Azithromycin 9001200 mg PO qd
- Note: Treatment for at least 6 weeks; longer duration if clinical or radiologic disease is extensive or response is incomplete at 6 weeks.
- 4.2  Chronic maintenance therapy
- Preferred regimen:  Pyrimethamine 2550 mg PO qd AND sulfadiazine 20004000 mg PO qd (in 24 divided doses) AND Leucovorin 1025 mg PO qd
- Alternative regimen (1): Clindamycin 600 mg PO q8h AND (Pyrimethamine 2550 mg AND Leucovorin 1025 mg) PO qd
- Alternative regimen (2): TMP-SMX DS 1 tablet bid
- Alternative regimen (3): Atovaquone 7501500 mg PO bid AND (Pyrimethamine 25 mg AND Leucovorin 10 mg) PO qd
- Alternative regimen (4): Atovaquone 7501500 mg PO bid
- Alternative regimen (5): Sulfadiazine 20004000 mg PO bid/qid
- Alternative regimen (6): Atovaquone 7501500 mg PO bid Pyrimethamine and Leucovorin doses are the same as for preferred therapy
- Note: Adjunctive corticosteroids (e.g., Dexamethasone) should only be administered when clinically indicated to treat mass effect associated with focal lesions or associated edema; discontinue as soon as clinically feasible. Anticonvulsants should be administered to patients with a history of seizures and continued through acute treatment, but should not be used as seizure prophylaxis . If Clindamycin is used in place of Sulfadiazine, additional therapy must be added to prevent PCP.
- Toxoplasma gondii (prophylaxis)
- 1. Prophylaxis to prevent first episode of encephalitis in AIDS
- 1.1 Indications
- Toxoplasma IgG-positive patients with CD4 count <100 cells/L
- Seronegative patients receiving PCP prophylaxis not active against toxoplasmosis should have toxoplasma serology retested if CD4 count decline to <100 cells/L. Prophylaxis should be initiated if seroconversion occurred.
- 1.2 Prophylactic therapy
- Preferred regimen: TMP-SMX 1 DS PO daily
- Alternative regimen (1): TMP-SMX 1 DS PO three times weekly
- Alternative regimen (2): TMP-SMX 1 SS PO qd
- Alternative regimen (3): Dapsone 50 mg PO qd AND (Pyrimethamine 50 mg PO AND Leucovorin 25 mg) PO weekly
- Alternative regimen (4): Dapsone 200 mg PO AND Pyrimethamine 75 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (5): Atovaquone 1500 mg PO qd
- Alternative regimen (6): Atovaquone 1500 mg  PO AND Pyrimethamine 25 mg PO AND Leucovorin 10 mg PO qd

# Trichomonas vaginalis
- Trichomonas vaginalis Return to Top
- 1. T. vaginalis infection in adults 
- Preferred regimen (1): Metronidazole 2 g PO in a single dose
- Preferred regimen (2): Tinidazole 2 g PO in a single dose
- Alternative regimen: Metronidazole 500  mg PO bid for 7 days
- 2. T. vaginalis infection in pregnant and lactating Women
- 2.1 Pregnant women
- Preferred regimen: Metronidazole 2 g PO in a single dose.
- 2.2 Post-partum and Breastfeeding
- Preferred regimen (1): Metronidazole 2 g PO in a single dose.
- Preferred regimen (2): Tinidazole 2 g PO in a single dose
- Note (1): Do not breastfeed for 12-24 hrs following Metronidazole and 72 hrs following  Tinidazole
- Note (2): Symptomatic pregnant women, regardless of pregnancy stage, should be tested and considered for treatment. Pregnant women should be advised of the risk and benefits to treatment as infection (definitely) and treatment (possibly)
- Note (3): Pregnant women with HIV who are treated for T. vaginalis infection should be retested 3 months after treatment.
- 3. T. vaginalis infection in patients with HIV
- Preferred regimen: Metronidazole 500  mg PO bid for 7 days
- 4. Persistent or recurrent trichomoniasis
- 4.1 Treatment failure
- Preferred regimen: Metronidazole 500  mg PO bid for 7 days
- 4.2 Treatment failure again
- Preferred regimen (1): Metronidazole 2 g PO for 7 days
- Preferred regimen (2): Tinidazole 2 g PO for 7 days
- 4.3 Nitroimidazole-resistant cases
- Preferred regimen: Tinidazole 2-3 g PO for 14 days

# African trypanosomiasis
- African trypanosomiasis Return to Top
- Sleeping sickness
- 1. East african trypanosomiasis
- 1.1 T. b. rhodesiense, hemolymphatic stage
- 1.1.1 Adult
- Preferred regimen: Suramin 1 gm IV on days 1,3,5,14, and 21
- 1.1.2 Pediatric
- Preferred regimen: Suramin 20 mg/kg IV on days 1, 3, 5, 14, and 21
- 1.2 T. b. rhodesiense, CNS involvement
- 1.2.1 Adult
- Preferred regimen: Melarsoprol 2-3.6 mg/kg/day IV for 3 days. After 7 days, 3.6 mg/kg/day for 3 days. Give a 3rd series of 3.6 mg/kg/d after 7 days.
- 1.2.2 Pediatric
- Preferred regimen: Melarsoprol 2-3.6 mg/kg/day IV for 3 days. After 7 days, 3.6 mg/kg/day for 3 days. Give a 3rd series of 3.6 mg/kg/d after 7 days
- 2. West african trypanosomiasis
- 2.1 T. b. gambiense, hemolymphatic stage
- 2.1.1 Adult
- Preferred regimen: Pentamidine 4 mg/kg/day IM/ IV for 7-10 days
- 2.1.2 Pediatric
- Preferred regimen: Pentamidine 4 mg/kg/day IM/IV for 7-10 days
- Note (1): Pentamidine should be used during pregnancy and lacation  only if the potential benefit justifies the potential risk
- Note (2): IM/IV Pentamidine have a similar safety profile in children age 4 months and older as in adults. Pentamidine is listed as a medicine for the treatment of 1st stage African trypanosomiasis infection (Trypanosoma brucei gambiense) on the WHO Model List of Essential Medicines for Children, intended for the use of children up to 12 years of age.
- 2.2  T. b. gambiense, CNS involvement
- 2.2.1 Adult
- Preferred regimen: Eflornithine 400 mg/kg/day  IV qid for 14 days
- 2.2.2 Pediatric
- Preferred regimen: Eflornithine 400 mg/kg/day IV  qid for 14 days
- Note (1): Eflornithine should be used during pregnancy and lactation, only if the potential benefit justifies the potential risk
- Note (2): The safety of Eflornithine in children has not been established. Eflornithine is not approved by the Food and Drug Administration (FDA) for use in pediatric patients. Eflornithine is listed for the treatment of 1st stage African trypanosomiasis inTrypanosoma brucei gambiense infection on the WHO Model List of Essential Medicines for Children, intended for the use of children up to 12 years of age.

# American trypanosomiasis
- American trypanosomiasis Return to Top
- Chagas disease
- 1. Preferred regimen(1):
- Patients of age < 12 years- Benznidazole  5-7.5 mg/kg/ day PO  bid for 60 days
- Patients of age 12 years or older- Benznidazole  5-7 mg/kg/day PO bid for 60 days
- 2. Preferred regimen(2):
- Patients of age  10 years- Nifurtimox 15-20 mg/kg/day PO tid/ qid for 90 days
- Patients of age 11-16 years- Nifurtimox 12.5-15 mg/kg/day PO tid/ qid for 90 days
- Patients of age 17 years or older-  Nifurtimox  8-10 mg/kg/day PO tid/ qid for 90 days
- Note: In the United States, Nifurtimox and Benznidazole are not FDA approved and are available only from CDC under investigational protocols.

### Parasites  Intestinal Nematodes (Roundworms)
- Gnathostoma spinigerum Return to Top
- Eosinophilic Meningitis
Preferred regimen: Supportive measures. Anthelminthic therapy might be deleterious by augmenting the inflammation due to the death of the larvae. The use of corticosteroids is generally favored for suppression of the inflammation but there are no clinical trials that prove its efficacy.
- Preferred regimen: Supportive measures. Anthelminthic therapy might be deleterious by augmenting the inflammation due to the death of the larvae. The use of corticosteroids is generally favored for suppression of the inflammation but there are no clinical trials that prove its efficacy.
- Cutaneous disease:
- Preferred regimen: Albendazole 400 mg bid for 21 days OR Ivermectin 200 mcg/kg qd for 2 days
- Alternative regimen: Albendazole 400 mg qd for 21 days OR Ivermectin 200 mcg/kg qd single dose
- Ancylostoma braziliense Return to Top
- Cutaneous larva migrans treatment
- 1.1 In adults
- Preferred regimen: Albendazole 400 mg PO qd for 3-7 days
- Alternative regimen: Ivermectin 200 mcg/kg PO qd for 1-2 days
- 1.2 In children
- Preferred regimen: Albendazole > 2 years then 400 mg PO qd for 3 days
- Alternative regimen: Ivermectin > 15 kg give 200 mcg/kg single dose
- Note: Albendazole is contraindicated in children younger than 2 years age
- Angiostrongylus cantonensis Return to Top
- Preferred: Symptomatic therapy, serial lumber puncture, corticosteroids (prednisone 60 mg qd for 2 weeks) and analgesics.
- Note: Albendazole and Mebendazole are generally not recommended due to the risk of exacerbation of neurological symptoms following anthelminthic therapy.
- Ascaris lumbricoides Return to Top
- Preferred regimen: Albendazole 400 mg PO qd OR Mebendazole 500 mg PO qd or 100 mg bid for 3 days
- Note: Albendazole dose for children of 1-2 years is 200 mg instead of 400 mg.
- Alternative regimen (1): Ivermectin 150 to 200 g/kg PO single dose
- Alternative regimen (2): Nitazoxanide 500 mg bid for 3 days 
- Alternative regimen (3): Levamisole 120 mg PO single dose
- Note: Pediatric dose: 2.5 mg/kg 
- Alternative regimen (4): Pyrantel Pamoate 11 mg/kg single dose PO - maximum 1.0 g
- Alternative regimen (5): Piperazine citrate 75 mg/kg qd for 2 days - maximum 3.5 g
- Capillaria philippinensis Return to Top
- 1. Intestinal capillariasis
- Preferred regimen: Albendazole 400 mg/day PO for 10-30 days
- Alternative regimen: Mebendazole 200 mg PO bid for 20-30 days
- Enterobius vermicularis Return to Top
- 1. Enterobius vermicularis
- Preferred regimen (1): Albendazole 400 mg PO single dose
- Preferred regimen (2): Mebendazole 100 mg PO single dose
- Preferred regimen (3): Ivermectin 200 g/kg PO single dose
- Preferred regimen (4): Pyrantel pamoate 11 mg/kg up to 1.0 g PO single dose
- Note: A second dose is given 2 weeks later because of the frequency of reinfection and autoinfection.
- Necator americanus Return to Top
- Preferred regimen: Albendazole 400 mg PO single dose
- Alternative regimen (1): Mebendazole 100 mg PO bid or 500 mg daily for 3 days
- Alternative regimen (2): Pyrantel pamoate 11 mg/kg PO qd (maximum 1 g/day) for 3 days
- Ancylostoma duodenale Return to Top
- Preferred regimen: Albendazole 400 mg PO single dose
- Alternative regimen (1): Mebendazole 100 mg PO bid or 500 mg daily for 3 days
- Alternative regimen (2): Pyrantel pamoate 11 mg/kg PO qd (maximum 1 g/day) for 3 days
- Strongyloides stercoralis Return to Top
- Preferred regimen: Ivermectin 200 mcg/kg/day PO qd for 2 days or two doses 2 weeks apart from each other
- Alternative regimen: Albendazole 400 mg PO bid for 3-7 days
- Trichuris trichiura Return to Top
- Preferred regimen: Albendazole 400 mg PO qd for 3 days
- Alternatie regimen (1): Mebendazole 100 mg PO bid for 3 days
- Alternative regimen (2): Ivermectin 200 mcg/kg/day PO qd for 3 days

### Parasites  Extraintestinal Nematodes (Roundworms)
- Ancylostoma braziliense Return to Top
- Preferred regimen
- Adult: Albendazole 400mg PO qd for 3-7 days.
- Pediatric: Albendazole > 2 years 400mg PO qd for 3 days
- Note: This drug is contraindicated in children younger than 2 years.
- Alternative regimen
- Adult: Ivermectin 200 mcg/kg PO qd for one or two days.
- Pediatric: Ivermectin >15 kg give 200mcg/kg single dose.
- Angiostrongylus cantonensis Return to Top
- Preferred: Symptomatic therapy, serial lumber puncture, corticosteroids (prednisone 60mg qd for 2 weeks) and analgesics
- Note: Albendazole and Mebendazole are generally not recommended due to the risk of exacerbation of neurological symptoms following anthelminthic therapy.
- Filariasis Return to Top
- Filariasis
- 1. Lymphatic filariasis caused by Wuchereria bancrofti, Brugia malayi, Brugia timori
- Preferred regimen: Diethylcarbamazine 6 mg/kd/day PO tid for 12 days (single dose if patient will continue to live in endemic area or is younger than 9 years old)
- 2. Loa loa filariasis
- 2.1 Symptomatic loiasis with < 8,000 microfilariae/mL
- Preferred regimen: Diethylcarbamazine 810 mg/kd/day PO tid for 21 days
- 2.2 Symptomatic loiasis, with < 8,000 microfilariae/mL and failed 2 rounds DEC
- Preferred regimen: Albendazole 200 mg PO bid for 21 days
- 2.3 Symptomatic loiasis, with  8,000 microfilariae/ml to suppress microfilaremia prior to treatment with DEC
- Preferred regimen: Albendazole 200 mg PO bid for 21 days
- 2.4 Symptomatic loiasis, with  8,000 microfilariae/mL
- Preferred regimen: Apheresis followed by Diethylcarbamazine
- Note: Apheresis should be performed at an institution with experience in using this therapeutic modality for loiasis.
- 3. River blindness (onchocerciasis) caused by Onchocerca volvulus
- Preferred regimen: Ivermectin 150 g/kg PO single dose, repeated every 6-12 mos until asymptomatic
- Alternative regimen: Doxycycline 100 mg PO qd for 6 weeks, alone or followed by Ivermectin 150 g/kg PO single dose
- Note: Do NOT administer Diethylcarbamazine where onchocerciasis is endemic due to increased risk for severe local inflammation in patients with ocular microfilariae.
- 4. Mansonella ozzardi
- Preferred regimen: Ivermectin 200 g/kg PO single dose
- Note: Endosymbiotic Wolbachia are essential to filarial growth, development, embryogenesis and survival and represent an additional target for therapy.  Doxycycline 100200 mg PO qd for 68 weeks results in loss of Wolbachia and decrease in both micro- and macrofilariae.
- 5. Mansonella perstans
- Preferred regimen: Doxycycline 100200 mg PO qd for 68 weeks
- 6. Mansonella streptocerca
- Preferred regimen (1): Diethylcarbamazine 6 mg/kd/day PO tid for 12 days
- Preferred regimen (2): Ivermectin 150 g/kg PO single dose
- 7. Tropical pulmonary eosinophilia caused by Wuchereria bancrofti
- Preferred regimen: Diethylcarbamazine 6 mg/kd/day PO tid for 1221 days
- Gnathostoma spinigerum Return to Top
- 1. Eosinophilic Meningitis
Preferred regimen: Supportive measures. Anthelminthic therapy might be deleterious by augmenting the inflammation due to the death of the larvae. The use of corticosteroids is generally favored for suppression of the inflammation but there are no clinical trials that prove its efficacy.
- Preferred regimen: Supportive measures. Anthelminthic therapy might be deleterious by augmenting the inflammation due to the death of the larvae. The use of corticosteroids is generally favored for suppression of the inflammation but there are no clinical trials that prove its efficacy.
- 2. Cutaneous disease:
- Preferred regimen (1): Albendazole 400 mg bid for 21 days
- Preferred regimen (2): Ivermectin 200 mcg/kg once daily for 2 days
- Alternative regimen (1): Albendazole 400 mg daily for 21 days
- Alternative regimen (2): Ivermectin 200 mcg/kg once daily for 1 day
- Toxocariasis Return to Top
- 1.1 Visceral toxocariasis
- Preferred regimen: Albendazole 400 mg PO bid for five days (both adult and pediatric dosage)
- Alternative regimen: Mebendazole 100-200 mg PO bid for five days (both adult and pediatric dosage)
- Note: Treatment is indicated for moderate-severe cases. Patients with mild symptoms of toxocariasis may not require anthelminthic therapy as symptoms are limited.
- 1.2 Ocular toxocariasis
- Preferred regimen: Prednisone 0.5-1mg/kg/day PO q24h AND Albendazole 400mg PO bid for 2 to 4 weeks (pediatric dose: 400mg PO qd)
- Note: Surgical therapy might be neeeded.
- Trichinella spiralis Return to Top
- Trichinella spiralis
- Preferred regimen (1): Albendazole 400 mg PO bid for 8-14 days
- Preferred regimen (2): Mebendazole 200-400 mg PO tid for 3 days THEN 400-500 mg PO tid for 10 days
- Note (1): Both treatment schemes are suitable for adult and pediatric dosages
- Note (1): Albendazole and Mebendazole are contraindicated during pregnancy and not recommended in children aged 2 years.
- Alternative regimen (1): (severe symptoms) Prednisone 30 mg/day-60 mg/day for 10-15 days
- Alternative regimen (2): Pyrantel 10-20 mg/kg single dose for 2-3 days

### Parasites  Trematodes (Flukes)
- Clonorchis sinensis Return to Top
- Preferred regimen: Praziquantel 75mg/kg/day PO tid for 2 days
- Alternative regimen (1): Albendazole 10mg/kg/day PO qd for 7 days
- Alternative regimen (2): Tribendimidine 400mg PO single dose
- This regimen is still under investigation, but it appears to be as effective as Praziquantel.
- Note: Urgent biliary decompression might be required for patients with acute cholangitis.
- Dicrocoelium dendriticum Return to Top
- Preferred regimen: Praziquantel 25 mg/kg PO tid for 2 days
- Note: Praziquantel is not approved for treatment of children less than 4 years old.
- Alternative regimen (1): Myrrh (commiphora molmol) 12 mg/kg/day PO for 6 days
- Alternative regimen (2): Triclabendazole 10 mg/kg PO single dose
- Fasciola hepatica Return to Top
- Preferred regimen: Triclabendazole 10 mg/kg PO one dose
- Note: Two-dose (double-dose) triclabendazole therapy can be given to patients who have severe or heavy Fasciola infections (many parasites) or who did not respond to single-dose therapy.
- Alternative regimen: Nitazoxanide 500mg PO bid for 7 days
- Paragonimus westermani Return to Top
- Preferred regimen (1): Praziquantel 25 mg/kg PO tid for 3 days
- Preferred regimen (2): Triclabendazole 10 mg/kg PO qd or bid
- Alternative regimen (1): Bithinol 30-50mg/kg PO on alternate days for 10-15 doses
- Alternative regimen (2): Niclosamide 2mg/kg PO single dose
- Schistosomiasis Return to Top
- 1. Schistosoma mansoni, S. haematobium, S. intercalatum
- Preferred regimen: Praziquantel 40 mg/kg per day PO in qd or bid for one day
- Alternative regimen (1): Oxamniquine 20 mg/kg PO single dose
- Alternative regimen (2): Artemisinin no dose is established yet
- Alternative regimen (3): Mefloquine 250 mg PO single dose
- Note: There is no benefit in associating the alternative therapies to Praziquantel.
- Note: Praziquantel is not effective against larval/egg stages of the disease.
- 2. S. japonicum, S. mekongi
- Preferred regimen: Praziquantel 60 mg/kg per day PO bid for one day
- Alternative regimen (1): Artemisinin no dose is established yet
- Alternative regimen (2): Mefloquine 250 mg PO single dose
- Note: There is no benefit in associating the alternative therapies to Praziquantel.
- 3. Katayama Fever
- Preferred regimen: Prednisone 20-40 mg/day PO for 5 days, THEN Praziquantel
- Note: Praziquantel should be used after 4-6 weeks of exposure, because it cannot kill the larvae stages of the Schistosoma. Praziquantel should be used after acute schistosomiasis syndrome symptoms have resolved always together with corticosteroids, only when ova are detected in stool or urine samples.
- 4. Neuroschistosomiasis
- Preferred regimen: prednisone 1-2 mg/kg
- Note: Praziquantel should only be introduced after a few days of the initiation of corticosteroid therapy, due to the risk of increasing the inflammatory response.

### Parasites  Cestodes (Tapeworms)
- Echinococcus Return to Top
- Echinococcus treatment
- 1.1 Echinococcus granulosus (hydatid disease) treatment
- Preferred regimen: Albendazole  60 kg 400 mg PO bid or < 60 kg 10-15 mg/kg/day PO bid with meals for 3-6 months
- Alternative regimen: Mebendazole 40-50mg/kg/day PO tid for 3-6 months
- Note: Percutaneous aspiration-injection-reaspiration (PAIR). Puncture & needle aspirate cyst content. Instill hypertonic saline (1530%) or absolute alcohol, wait 2030 min, then re-aspirate with final irrigation. Administer Albendazole at least 4 hours before PAIR.
- Note: If surgery is needed, make sure to administer Albendazole for at least a week before the surgery, and to keep the medication for at least 4 weeks after the procedure.
- 1.2 Echinococcus multilocularis (alveolar cyst disease) treatment
- Preferred regimen: Albendazole  60 kg 400 mg PO bid or < 60 kg 15 mg/kg/day PO bid with meals for at least 2 years. Long-term follow up needed to evaluate progression of the lesions.

# Neurocysticercosis
- Neurocysticercosis Return to Top
- Neurocysticercosis treatment
- 1. Parenchymal neurocysticercosis
- 1.1 Single lesions
- Preferred regimen:  Albendazole 15 mg/kg/day PO bid for 3-8 days AND Prednisone 1 mg/kg/day PO qid for 8-10 days followed by a taper
- 1.2  Multiple cysts
- Preferred regimen: Albendazole 15 mg/kg/day PO bid for 8-15 days and high-dose steroids
- Preferred regimen: Praziquantel 50 mg/kg/day PO tid AND Albendazole 15 mg/kg/day PO bid
- 1.3 Cysticercal encephalitis 
- Cysticercal encephalitis (diffuse cerebral edema associated with multiple inflamed cysticerci) is a contraindication for antiparasitic therapy, since enhanced parasite killing can exacerbate host inflammatory response and lead to diffuse cerebral edema and potential transtentorial herniation. Most cases of cysticercal encephalitis improve with corticosteroid therapy
- 1.4 Calcified cysts
- Radiographic evidence of parenchymal calcifications is a significant risk factor for recurrent seizure activity; these lesions are present in about 10 percent of individuals in regions where neurocysticercosis is endemic. Seizures in these patients should be treated with antiepileptic therapy.
- 2. Extraparenchymal NCC
- 2.1 Subarachnoid cysts
- Preferred regimen: Albendazole  15 mg/kg/day PO bid  for  28 days AND (Prednisone up to 60 mg/day PO OR Dexamethasone (up to 24 mg/day)) along with the antiparasitic therapy. The dose can often be tapered after a few weeks. However, in cases for which more prolonged steroid therapy is required, methotrexate can be used as a steroid-sparing agent
- 2.2 Giant cysts
- Giant cysticerci are usually accompanied by cerebral edema and mass effect, which should be managed with high-dose corticosteroids (with or without mannitol).
- 2.3  Intraventricular cysts
- Emergent management with CSF diversion via a ventriculostomy or placement of a ventriculo-peritoneal shunt
- Treatment of residual hydrocephalus may be managed with endoscopic foraminotomy and endoscopic third ventriculostomy; this approach may also allow debulking of cisternal cysticerci
- 2.4  Ocular cysticercosis
- Surgical excision is warranted in the setting of intraocular cysts
- Cysticercal involvement of the extraocular muscles should be managed with albendazole and corticosteroids.
- 2.5 Spinal cysticercosis
- Medical therapy with corticosteroids and antiparasitic drugs
- Sparganosis Return to Top
- Sparganosis (Spirometra mansonoides) treatment 
- Preferred treatment: Surgical resection or ethanol injection of subcutaneous masses
- Note: Praziquantel 75 mg/kg/day PO qd for 3 days is controversial. It's been innefective in some cases, but has had some results in patients when surgical therapy wasn't an option.

### Parasites  Ectoparasites
- Body lice Return to Top
- Pediculus humanus, corporis treatment
- A body lice infestation is treated by improving the personal hygiene of the infested person, including assuring a regular (at least weekly) change of clean clothes.
- Clothing, bedding, and towels used by the infested person should be laundered using hot water (at least 130F) and machine dried using the hot cycle.
- Sometimes the infested person also is treated with a pediculicide Ivermectin Lotion; however, a pediculicide  Ivermectin generally is not necessary if hygiene is maintained and items are laundered appropriately at least once a week. A pediculicide Ivermectin should be applied exactly as directed on the bottle or by your physician.
- Head lice Return to Top
- Pediculus humanus, capitis treatment
- Preferred regimen (1): Permethrin 1% lotion apply to shampooed dried hair for 10 min.; repeat in 9-10 days
- Preferred regimen (2):  Malathion 0.5% lotion (Ovide) apply to dry hair for 812hrs, then shampoo (2 doses 7-9 days apart)
- Alternative regimen: Ivermectin 200 g/kg PO once; 3 doses at 7 day intervals reported effective.
- Pubic lice Return to Top
- Phthirus pubis treatment
- Preferred regimen (1): Permethrin 1% cream rinse applied to affected areas and washed off after 10 minutes
- Preferred regimen (2): Pyrethrins with piperonyl butoxide applied to the affected area and washed off after 10 minutes
- Alternative regimen (1): Malathion 0.5% lotion applied to affected areas and washed off after 812 hours
- Alternative regimen (2): Ivermectin 250 ug/kg  PO, repeated in 2 weeks
- Myiasis Return to Top
- Preferred regimen: No medications approved by the FDA are available for treatment
- Note: Fly larvae need to be surgically removed.
- Fly larvae treatment 
- Preferred treatment (1): Occlude punctum to prevent gas exchange with petrolatum, fingernail polish, makeup cream or bacon.
- Preferred treatment (2): When larva migrates, manually remove.
- Note (1): Myiasis is due to larvae of flies.
- Note (2): Usually cutaneous/subcutaneous nodule with central punctum.
- Scabies Return to Top
- Sarcoptes scabiei treatment
- 1. Adult
- Preferred regimen (1): Permethrin 5% cream applied to all areas of the body from the neck down and washed off after 814 hours
- Preferred regimen (2): Ivermectin  200 ug/kg PO qd and repeated in 2 weeks
- Alternative regimen: Lindane (1%) 1 oz of lotion or 30 g of cream applied in a thin layer to all areas of the body from the neck down and thoroughly washed off after 8 hours
- 2. Infants and young children
- Preferred regimen: Permethrin 5% cream applied to all areas of the body from the neck down and washed off after 814 hours
- Note: Infants and young children aged< 10 years should not be treated with lindane.
- 3. Crusted Scabies
- Crusted scabies (i.e., Norwegian scabies) is an aggressive infestation that usually occurs in immunodeficient, debilitated, or malnourished persons, including persons receiving systemic or potent topical glucocorticoids, organ transplant recipients, persons with HIV infection or human T-lymphotrophic virus-1-infection, and persons with hematologic malignancies.
- Preferred regimen:   (Topical scabicide  5% topical Benzyl benzoate 5% OR  topical Permethrin  5% cream (full-body application to be repeated daily for 7 days then twice weekly until discharge or cure) AND treatment with Ivermectin 200 ug/kg  PO on days 1,2,8,9, and 15. Additional Ivermectin treatment on days 22 and 29 might be required for severe cases
- 4.Pregnant or Lactating Women
- Preferred regimen: Permethrin 5% cream applied to all areas of the body from the neck down and washed off after 814 hours

### Viruses
- Adenovirus Return to Top
- Adenovirus
- 1. In severe cases of pneumonia or post hematopoietic stem cell transplantation
- Preferred regimen (1): Cidofovir 5 mg/kg/week IV for 2 weeks, then every 2 weeks AND Probenecid 1.25 g/M2 PO given 3 hours before Cidofovir and 3 & 9 hours after each infusion
- Preferred regimen (2): Cidofovir 1 mg/kg IV 3 times per week
- Note: Ganciclovir, Foscarnet and Ribavirin are not recommended for use on adenovirus infection.
- 2. For hemorrhagic cystitis
- Preferred regimen: Cidofovir (5 mg/kg in 100 mL saline instilled into bladder) intravesical
- 3. Pink eye (viral conjunctivitis)
- Preferred regimen: No specific treatment available. If symptomatic, cold artificial tears may help.
- 4.Bronchitis
- Preferred regimen: No specific therapy recommended, treatment is symptomatic.
- SARS Return to Top
- Severe acute respiratory distress syndrome- coronavirus infection treatment
- Preferred regimen: supportive therapy
- Note: New therapies were studied for SARS during the last outbreaks which concluded:
- Ribavirin ineffective and probably harmful due to haemolytic anaemia
- Lopinavir AND Ritonavir is still controversial and need further investigation
- Interferon has no benefit and its studies are inconclusive
- Corticosteroids increases risk of fungal infections, some studies showed a higher incidence of psychosis, diabetes, avascular necrosis and osteoporosis
- Inhaled Nitric oxide potent mediator of airway inflammation, its has improved oxygenation in some studies
- Cytomegalovirus Return to Top
- Cytomegalovirus treatment
- 1. Immunocompetent patients
- 1.1 Mononucleosis syndrome
- Preferred regimen: supportive therapy
- 1.2 CMV in pregnancy
- Preferred regimen: Hyperimmune 200 IU/kg of maternal weight as single-dose during pregnancy
- 2. Immunocompromised patients
- 2.1 Retinitis
- Preferred regimen (1): Ganciclovir intraocular implant PLUS Valganciclovir 900 mg PO bid for 14-21 days THEN Valganciclovir 900mg PO qq for maintenance therapy - for immediate sight-threatening lesions
- Preferred regimen (2): Valganciclovir 900 mg PO bid for 14-21 days THEN Valganciclovir 900 mg PO qq for maintenance therapy - for peripheral lesions
- Alternative regimen (1): Foscarnet 60 mg/kg IV q8h OR Foscarnet 90 mg/kg IV q12h for 14-21 days THEN Foscarnet 90-120 mg/kg IV q24h
- Alternative regimen (2): Cidofovir 5 mg/kg IV for 2 weeks THEN Cidofovir 5 mg/kg IV every other week - each dose should be admnistered with IV saline hydration and probenecid
- Alternative regimen (3): Ganciclovir 5 mg/kg IV q12h for 14-21 days THEN Valganciclovir 900 mg PO bid
- Alternative regimen (4): Fomivirsen intravitreal injection - for relapses
- Note: keep a maintenance dose of Valganciclovir 900 mg PO qd until CD4 >100/mm3
- 2.2 Transplant patients
- Preferred regimen: Valganciclovir 900 mg PO bid OR Ganciclovir 5 mg/kg IV q12h for at least 2-3 weeek
- Note: Use Valganciclovir 900 mg PO qd for 1-3 months if high dose of immunosuppression.
- 2.3 Colitis, esophagitis, gastritis
- Preferred regimen: Ganciclovir 5 mg/kg/dose IV q12h for 3-6 weeks weeks for induction. There is no agreement on the use of maintenance.
- Alternative regimen: Cidofovir 5 mg/kg IV for 2 weeks, then 5 mg/kg every other week; each dose should be administered with IV saline hydration and oral probenecid 2 g PO 3h before each dose and further 1 g doses after 2h and 8h.
- Note: Switch to oral Valganciclovir when PO tolerated & when symptoms not severe enough to interfere with absorption.
- 2.4 Pneumonia
- Preferred regimen: Valganciclovir 900 mg PO bid for 1421 days, then 900 mg PO qd for maintenance therapy
- Alternative regimen for retinitis: Ganciclovir 5 mg/kg IV q12h for 1421 days, then Valganciclovir 900 mg PO qd
- Note: In bone marrow transplant patients, combine therapy with CMV immune globulin.
- 2.5 Encephalitis, ventriculitis
- Note: Treatment not defined, but should be considered the same as retinitis. Disease may develop while taking Ganciclovir as suppressive therapy.
- 2.6 Lumbosacral polyradiculopathy
- Preferred regimen: Ganciclovir, as with retinitis
- Alternative regimen: Foscarnet 40 mg/kg IV q12h another option
- Alternative regimen: Cidofovir 5 mg/kg IV for 2 weeks, then 5 mg/kg every other week; each dose should be administered with IV saline hydration and oral probenecid 2 g PO 3h before each dose and further 1 g doses after 2h and 8h.
- Note (1): Switch to Valganciclovir when possible.
- Note (2): Suppression continued until CD4 remains >100/mm3 for 6 months.
- 2.7 Peri/postnatal severe CMV infection in very low birth weight infants
- Preferred regimen: Ganciclovir 6 mg/kg/dose IV q12h for 3 weeks
- Enterovirus D68 Return to Top
- Enterovirus treatment
- Preferred regimen: supportive therapy
- Note: A new drug Pleconaril designed to affect Rhinovirus is being suggested to be effective against Enterovirus D68 but further investigation is required
- Ebola virus Return to Top
- Ebola virus treatment
- Preferred regimen: supportive therapy. There is no specific antiviral drug available for Ebola thus far. For information of investigational therapies including Favipiravir, Brincidofovir, ZMapp, TKM-Ebola, AVI-6002, and BCX4430, see here.
- Isolate patient
- Provide intravenous fluids (IV) (patients need large volumes in some cases) and maintain electrolytes at normal levels
- Maintain oxygen saturation and blood pressure
- Administer blood products if coagulopathy or bleeding, antiemetics if vomiting , antipyretics if fever, analgesics, anti-motility if severe diarrhea, total parenteral nutrition if patient has poor oral intake and dialysis if there's renal failure
- Treat other infections if they occur. Provide adequate Gram-negative coverage and gram-positive if the patient has any catheter or hospital-acquired pneumonia.
- If there's respiratory failure, invasive mechanical ventilation may be the best option to offer respiratory support
- Note (1): Recovery from Ebola depends on good supportive care and the patients immune response.
- Note (2): While there is no proven treatment available for Ebola virus disease, human convalescent whole blood has been used as an empirical treatment with promising results in a small group of EVD cases.
- Note (3): People who recover from Ebola infection develop antibodies that last for at least 10 years, possibly longer. It is not known if people who recover are immune for life or if they can become infected with a different species of Ebola.
- Note (4): Some people who have recovered from Ebola have developed long-term complications, such as joint and vision problems.
- Marburg virus Return to Top
- Marburg virus treatment
- Preferred regimen: supportive therapy including maintenance of blood volume and electrolyte balance, as well as analgesics and standard nursing care
- Hantavirus Return to Top
- Hantavirus cardiopulmonary syndrome treatment
- Preferred regimen: Supportive therapy, there is no specific treatment for hantavirus cardiopulmonary syndrome
- Note (1): ICU management should include careful assessment, monitoring and adjustment of volume status and cardiac function, including inotropic and vasopressor support if needed
- Note (2): Fluids should be administered carefully due to the potential for capillary leakage
- Note (3): Supplemental oxygen should be administered if patients become hypoxic
- Note (4): Equipment and materials for intubation and mechanical ventilation should be readily available since onset of respiratory failure may be precipitous
- Note (5): Extracorporeal membrane oxygenation was used with survival rates of 50% in some studies in patients with cardiac index output <2.5L/min/m2
- Dengue virus Return to Top
- Dengue virus 
- 1. Patients who may be sent home
- These are patients who are able to tolerate adequate volumes of oral fluids and pass urine at least once every six hours, and do not have any of the warning signs, particularly when fever subsides
- Patients who are sent home should be monitored daily by health care providers for temperature pattern, volume of fluid intake and losses, urine output (volume and frequency), warning signs, signs of plasma leakage and bleeding, haematocrit, and white blood cell and platelet counts
- 2. Ambulatory patients  with stable haematocrit can be sent home
- Encourage oral intake of oral rehydration solution (ORS), fruit juice and other fluids containing electrolytes and sugar to replace losses from fever and vomiting
- Give Paracetamol for high fever if the patient is uncomfortable. The interval of paracetamol dosing should not be less than six hours. Tepid sponge if the patient still has high fever
- Should be brought to hospital immediately if any of the following occur: no clinical improvement, deterioration around the time of defervescence, severe abdominal pain, persistent vomiting, cold and clammy extremities, lethargy or irritability/restlessness, bleeding (e.g. black stools or coffee-ground vomiting), not passing urine for more than 46 hours
- 3. Patients who should be referred for in-hospital management
- Patients may need to be admitted to a secondary health care centre for close observation, particularly as they approach the critical phase. These include patients with warning signs (Abdominal pain or tenderness, Persistent vomiting, Clinical fluid accumulation, Mucosal bleed, Lethargy, restlessness, Liver enlargment >2cm, Laboratory:increase in HCT concurrent with rapid decrease in platelet count), those with co-existing conditions that may make dengue or its management more complicated (such as pregnancy, infancy, old age, obesity, diabetes mellitus, renal failure, chronic haemolytic diseases), and those with certain social circumstances (such as living alone, or living far from a health facility without reliable means of transport)
- 3.1 With warning signs
- Obtain a reference haematocrit before fluid therapy. Give only isotonic solutions such as 0.9% saline, Ringers lactate, or Hartmanns solution. Start with 57 ml/ kg/hour for 12 hours, then reduce to 35 ml/kg/hr for 24 hours, and then reduce to 23 ml/kg/hr or less according to the clinical response
- Reassess the clinical status and repeat the haematocrit. If the haematocrit remains the same or rises only minimally, continue with the same rate (23 ml/kg/hr) for another 24 hours. If the vital signs are worsening and haematocrit is rising rapidly, increase the rate to 510 ml/kg/hour for 12 hours. Reassess the clinical status, repeat the haematocrit and review fluid infusion rates accordingly
- Give the minimum intravenous fluid volume required to maintain good perfusion and urine output of about 0.5 ml/kg/hr. Intravenous fluids are usually needed for only 2448 hours. Reduce intravenous fluids gradually when the rate of plasma leakage decreases towards the end of the critical phase. This is indicated by urine output and/or oral fluid intake that is/are adequate, or haematocrit decreasing below the baseline value in a stable patient
- Patients with warning signs should be monitored by health care providers until the period of risk is over. A detailed fluid balance should be maintained. Parameters that should be monitored include vital signs and peripheral perfusion (14 hourly until the patient is out of the critical phase), urine output (46 hourly), haematocrit (before and after fluid replacement, then 612 hourly), blood glucose, and other organ functions (such as renal profile, liver profile, coagulation profile, as indicated)
- 3.2 Without warning signs
- Encourage oral fluids. If not tolerated, start intravenous fluid therapy of 0.9% saline or Ringers lactate with or without dextrose at maintenance rate. For obese and overweight patients, use the ideal body weight for calculation of fluid infusion. Patients may be able to take oral fluids after a few hours of intravenous fluid therapy. Thus, it is necessary to revise the fluid infusion frequently. Give the minimum volume required to maintain good perfusion and urine output. Intravenous fluids are usually needed only for 2448 hours
- Patients should be monitored by health care providers for temperature pattern, volume of fluid intake and losses, urine output (volume and frequency), warning signs, haematocrit, and white blood cell and platelet counts. Other laboratory tests (such as liver and renal functions tests) can be done, depending on the clinical picture and the facilities of the hospital or health centre
- 4. Severe dengue
- Severe dengue: Severe plasma leakage leading to dengue shock and/or fluid accumulation with respiratory distress; severe haemorrhages; severe organ impairment (hepatic damage, renal impairment, cardiomyopathy, encephalopathy or encephalitis)
- 4.1 Treatment of shock
- 4.1.1 Compensated shock
- Start intravenous fluid resuscitation with isotonic crystalloid solutions at 510 ml/kg/hour over one hour. Then reassess the patients condition (vital signs, capillary refill time, haematocrit, urine output). The next steps depend on the situation
- If the patients condition improves, intravenous fluids should be gradually reduced to 57 ml/kg/hr for 12 hours, then to 35 ml/kg/hr for 24 hours, then to 23 ml/kg/hr, and then further depending on haemodynamic status, which can be maintained for up to 2448 hours
- If vital signs are still unstable (i.e. shock persists), check the haematocrit after the first bolus. If the haematocrit increases or is still high (>50%), repeat a second bolus of crystalloid solution at 1020 ml/kg/hr for one hour. After this second bolus, if there is improvement, reduce the rate to 710 ml/ kg/hr for 12 hours, and then continue to reduce as above. If haematocrit decreases compared to the initial reference haematocrit (<40% in children and adult females, <45% in adult males), this indicates bleeding and the need to cross-match and transfuse blood as soon as possible
- Further boluses of crystalloid or colloidal solutions may need to be given during the next 2448 hours
- 4.1.2 Hypotensive shock
- Initiate intravenous fluid resuscitation with crystalloid or colloid solution (if available) at 20 ml/kg as a bolus given over 15 minutes to bring the patient out of shock as quickly as possible
- If the patients condition improves, give a crystalloid/colloid infusion of 10 ml/kg/hr for one hour. Then continue with crystalloid infusion and gradually reduce to 57 ml/kg/hr for 12 hours, then to 35 ml/kg/hr for 24 hours, and then to 23 ml/kg/hr or less, which can be maintained for up to 2448 hours
- If vital signs are still unstable (i.e. shock persists), review the haematocrit obtained before the first bolus. If the haematocrit was low (<40% in children and adult females, <45% in adult males), this indicates bleeding and the need to cross- match and transfuse blood as soon as possible (see treatment for haemorrhagic complications)
- If the haematocrit was high compared to the baseline value (if not available, use population baseline), change intravenous fluids to colloid solutions at 1020 ml/kg as a second bolus over 30 minutes to one hour. After the second bolus, reassess the patient. If the condition improves, reduce the rate to 710 ml/kg/hr for 12 hours, then change back to crystalloid solution and reduce the rate of infusion as mentioned above. If the condition is still unstable, repeat the haematocrit after the second bolus
- If the haematocrit decreases compared to the previous value (<40% in children and adult females, less than 45% in adult males), this indicates bleeding and the need to cross-match and transfuse blood as soon as possible (see treatment for haemorrhagic complications). If the haematocrit increases compared to the previous value or remains very high ( more than 50%), continue colloid solutions at 1020 ml/kg as a third bolus over one hour. After this dose, reduce the rate to 710 ml/kg/hr for 12 hours, then change back to crystalloid solution and reduce the rate of infusion as mentioned above when the patients condition improves
- Further boluses of fluids may need to be given during the next 24 hours. The rate and volume of each bolus infusion should be titrated to the clinical response. Patients with severe dengue should be admitted to the high-dependency or intensive care area
- 4.2 Treatment of haemorrhagic complications
- Blood transfusion required
- Give 510ml/kg of fresh-packed red cells or 1020 ml/kg of fresh whole blood at an appropriate rate and observe the clinical response. It is important that fresh whole blood or fresh red cells are given. Oxygen delivery at tissue level is optimal with high levels of 2,3 di-phosphoglycerate (2,3 DPG). Stored blood loses 2,3 DPG, low levels of which impede the oxygen-releasing capacity of haemoglobin, resulting in functional tissue hypoxia. A good clinical response includes improving haemodynamic status and acid-base balance
- Consider repeating the blood transfusion if there is further blood loss or no appropriate rise in haematocrit after blood transfusion. There is little evidence to support the practice of transfusing platelet concentrates and/or fresh-frozen plasma for severe bleeding. It is being practised when massive bleeding can not be managed with just fresh whole blood/fresh-packed cells, but it may exacerbate the fluid overload
- Great care should be taken when inserting a naso-gastric tube which may cause severe haemorrhage and may block the airway. A lubricated oro-gastric tube may minimize the trauma during insertion. Insertion of central venous catheters should be done with ultra-sound guidance or by a very experienced person
- 5. Treatment of complications and other areas of treatment
- 5.1 Fluid overload
- Oxygen therapy should be given immediately
- When the following signs are present, intravenous fluids should be discontinued or reduced to the minimum rate necessary to maintain euglycaemia
- signs of cessation of plasma leakage; stable blood pressure, pulse and peripheral perfusion; haematocrit decreases in the presence of a good pulse volume; afebrile for more than 2448 days (without the use of antipyretics); resolving bowel/abdominal symptoms; improving urine output
- The management of fluid overload varies according to the phase of the disease and the patients haemodynamic status. If the patient has stable haemodynamic status and is out of the critical phase (more than 2448 hours of defervescence), stop intravenous fluids but continue close monitoring. If necessary, give oral or intravenous furosemide 0.10.5 mg/kg/dose once or twice daily, or a continuous infusion of furosemide 0.1 mg/kg/hour. Monitor serum potassium and correct the ensuing hypokalaemia
- If the patient has stable haemodynamic status but is still within the critical phase, reduce the intravenous fluid accordingly. Avoid diuretics during the plasma leakage phase because they may lead to intravascular volume depletion
- Patients who remain in shock with low or normal haematocrit levels but show signs of fluid overload may have occult haemorrhage. Further infusion of large volumes of intravenous fluids will lead only to a poor outcome. Careful fresh whole blood transfusion should be initiated as soon as possible. If the patient remains in shock and the haematocrit is elevated, repeated small boluses of a colloid solution may help
- 5.2 Other complications of dengue
- Both hyperglycaemia and hypoglycaemia may occur, even in the absence of diabetes mellitus and/or hypoglycaemic agents. Electrolyte and acid-base imbalances are also common observations in severe dengue and are probably related to gastrointestinal losses through vomiting and diarrhoea or to the use of hypotonic solutions for resuscitation and correction of dehydration. Hyponatraemia, hypokalaemia, hyperkalaemia, serum calcium imbalances and metabolic acidosis (sodium bicarbonate for metabolic acidosis is not recommended for pH  7.15) can occur. One should also be alert for co-infections and nosocomial infections.
- 5.3 Supportive care and adjuvant therapy
- renal replacement therapy, with a preference to continuous veno-venous haemodialysis (CWH), since peritoneal dialysis has a risk of bleeding;
- vasopressor and inotropic therapies as temporary measures to prevent life- threatening hypotension in dengue shock and during induction for intubation, while correction of intravascular volume is being vigorously carried out;
- further treatment of organ impairment, such as severe hepatic involvement or encephalopathy or encephalitis;
- further treatment of cardiac abnormalities, such as conduction abnormalities, may occur (the latter usually not requiring interventions)
- West Nile virus Return to Top
- West nile virus
- 1.1. Prevention
- No WNV vaccines are licensed for use in humans. In the absence of a vaccine, prevention of WNV disease depends on community-level mosquito control programs to reduce vector densities, personal protective measures to decrease exposure to infected mosquitoes, and screening of blood and organ donors.
- Personal protective measures include use of mosquito repellents, wearing long-sleeved shirts and long pants, and limiting outdoor exposure from dusk to dawn. Using air conditioning, installing window and door screens, and reducing peridomestic mosquito breeding sites, can further decrease the risk for WNV exposure.
- Blood and some organ donations in the United States are screened for WNV infection; health care professionals should remain vigilant for the possible transmission of WNV through blood transfusion or organ transplantation. Any suspected WNV infections temporally associated with blood transfusion or organ transplantation should be reported promptly to the appropriate state health department.
- 1.2. Treatment
- There is no specific treatment for WNV disease; clinical management is supportive. Patients with severe meningeal symptoms often require pain control for headaches and antiemetic therapy and rehydration for associated nausea and vomiting. Patients with encephalitis require close monitoring for the development of elevated intracranial pressure and seizures. Patients with encephalitis or poliomyelitis should be monitored for inability to protect their airway. Acute neuromuscular respiratory failure may develop rapidly and prolonged ventilatory support may be required.
- Yellow Fever Return to Top
- Yellow fever
- Preferred regimen: No specific treatment is available for yellow fever. In the toxic phase, supportive treatment includes therapies for treating dehydration and fever. Ribavirin has failed in several studies in the monkey model.
- Note: An international seminar held by WHO in 1984 recommended maintenance of nutrition, prevention of hypoglycemia, maintenance of the blood pressure with fluids and vasoactive drugs, prevention of bleeding with fresh-frozen plasma, dialysis if renal failure, correction of metabolic acidosis, administration of cimetidine IV to avoid gastric bleeding and oxygen if needed.
- Chikungunya virus Return to Top
- Preferred regimen: no specific therapeutics agents are available and there are no licensed vaccines to prevent Chikungunya Fever.
- Note: Anti inflammatory drugs can be used to control joint swelling and arthritis.
- Hepatitis A virus Return to Top
- Preferred regimen: No therapy recommended. If within 2 wks of exposure, IVIG 0.02 mL per kg IM times 1 protective.
- Hepatitis B virus Return to Top
- Acute Hepatitis B
- Chronic Hepatitis B
- 1. Patients with HBeAg-positive chronic hepatitis B
- 1.1. HBV DNA >20,000, ALT <2 times upper limit normal (ULN)
- Observe; consider treatment when ALT becomes elevated.
- Consider biopsy in persons 40 years, ALT persistently high normal >2 times upper limit normal (ULN), or with family history of HCC.
- Consider treatment if HBV DNA >20,000 IU/mL and biopsy shows moderate/severe inflammation or significant fibrosis.
- 1.2. HBV DNA >20,000, ALT >2 times upper limit normal (ULN)
- Preferred regimen (1): Pegylated IFN-alpha 180 mcg weekly SC for 48 weeks
- Preferred regimen (2): Tenofovir (TDF) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 300 mg q24 hrs
- If creatinine clearance 3049 give 300 mg q48 hrs
- If creatinine clearance 1029 give 300 mg q72-96 hrs
- If creatinine clearance <10 with dialysis give 300 mg once a week or after a total of approximately 12 hours of dialysis
- If creatinine clearance <10 without dialysis there is no recommendation
- Note: duration of treatment is minimum 1 year, continue for at least 6 months after HBeAg seroconversion
- Preferred regimen (3): Entecavir (ETV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 give 0.5 mg PO daily for patients with no prior Lamivudine treatment, and 1 mg PO daily for patients who are refractory/resistant to lamivudine for minimum 1 year, continue for at least 6 months after HBeAg seroconversion.
- If creatinine clearance 3049 give 0.25 mg PO qd OR 0.5 mg PO q48 hr for patients with no prior Lamivudine treatment, and 0.5 mg PO qd OR 1 mg PO q 48 hr for patients who are refractory/resistant to lamivudine for minimum 1 year, continue for at least 6 months after HBeAg seroconversion.
- If creatinine clearance 1029 give 0.15 mg PO qd OR 0.5 mg PO q 72 hr for patients with no prior Lamivudine treatment, and 0.3 mg PO qd OR 1 mg PO q 72 hr for patients who are refractory/resistant to lamivudine for minimum 1 year, continue for at least 6 months after HBeAg seroconversion.
- If creatinine clearance <10 or hemodialysis or continuous ambulatory peritoneal dialysis give 0.05 mg PO qd OR 0.5 mg PO q7 days for patients with no prior Lamivudine treatment, and 0.1 mg PO qd OR 1 mg PO q 7 days for patients who are refractory/resistant to lamivudine for minimum 1 year, continue for at least 6 months after HBeAg seroconversion.
- Note: duration of treatment is minimum 1 year, continue for at least 6 months after HBeAg seroconversion
- Alternative regimen (1): Interferon alpha (IFN) 5 MU daily or 10 MU thrice weekly SC for 16 weeks
- Alternative regimen (2): Lamivudine (LAM) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 100 mg PO qd
- If creatinine clearance 3049 give 100 mg PO first dose, then 50 mg PO qd
- If creatinine clearance 1529 give 100 mg PO first dose, then 25 mg PO qd
- If creatinine clearance 5-14 give 35 mg PO first dose, then 15 mg PO qd
- If creatinine clearance <5 give 35 mg PO first dose, then 10 mg PO qd
- The recommended dose of lamivudine for persons coinfected with HIV is 150mg PO twice daily.
- Note: duration of treatment is minimum 1 year, continue for at least 6 months after HBeAg seroconversion
- Alternative regimen (3): Adefovir (ADV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 10 mg PO daily
- If creatinine clearance 3049 give 10 mg PO every other day
- If creatinine clearance 1019 10 mg PO every third day
- If hemodialysis patients give 10 mg PO every week following dialysis
- Note: duration of treatment is minimum 1 year, continue for at least 6 months after HBeAg seroconversion
- Alternative regimen (4): Telbivudine (LdT) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 600 mg PO once daily
- If creatinine clearance 3049 600 give mg PO once every 48 hours
- If creatinine clearance <30 (not requiring dialysis) give 600 mg PO once every 72 hours
- If End-stage renal disease give 600 mg PO once every 96 hours after hemodialysis
- Note (1): duration of treatment is minimum 1 year, continue for at least 6 months after HBeAg seroconversion
- Note (2): Observe for 3-6 months and treat if no spontaneous HBeAg loss.
- Note (3): Consider liver biopsy prior to treatment if compensated.
- Note (4): Immediate treatment if icteric or clinical decompensation.
- Note (5): Interferon alpha (IFN)/ pegylated interferon-alpha (peg-IFN), Lamivudine (LAM), Adefovir (ADV), Entecavir (ETV), tenofovir disoproxil fumarate (TDF) or telbivudine (LdT) may be used as initial therapy.
- Note (6): Adefovir (ADV) not preferred due to weak antiviral activity and high rate of resistance after 1st year.
- Note (7): Lamivudine (LAM) and Telbivudine (LdT) not preferred due to high rate of drug resistance.
- Note (8): End-point of treatment  Seroconversion from HBeAg to anti-HBe.
- Note (9): Interferon alpha (IFN)  non-responders / contraindications to IFN change to Tenofovir (TDF)/Entecavir (ETV).
- 1.3. Children with elevated ALT greater than 2 times normal
- Preferred regimen(1): Interferon alpha (IFN) 6 MU/m2  SC thrice weekly with a maximum of 10 MU
- Preferred regimen(2): Lamivudine (LAM) 3 mg/kg/d PO with a maximum of 100 mg/d.
- 2. Patients with HBeAg-negative chronic hepatitis B
- 2.1. HBV DNA >2,000 IU/mL and elevated ALT >2 times normal
- Preferred regimen (1): Pegylated IFN-alpha 180 mcg weekly SC for 1 year
- Preferred regimen (2): Tenofovir (TDF) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 300 mg q24 hrs
- If creatinine clearance 3049 give 300 mg q48 hrs
- If creatinine clearance 1029 give 300 mg q72-96 hrs
- If creatinine clearance <10 with dialysis give 300 mg once a week or after a total of approximately 12 hours of dialysis
- If creatinine clearance <10 without dialysis there is no recommendation
- Note: duration of treatment is more than 1 year
- Preferred regimen (3): Entecavir (ETV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 give 0.5 mg PO daily for patients with no prior Lamivudine treatment, and 1 mg PO daily for patients who are refractory/resistant to lamivudine
- If creatinine clearance 3049 give 0.25 mg PO qd OR 0.5 mg PO q48 hr for patients with no prior Lamivudine treatment, and 0.5 mg PO qd OR 1 mg PO q 48 hr for patients who are refractory/resistant to lamivudine
- If creatinine clearance 1029 give 0.15 mg PO qd OR 0.5 mg PO q 72 hr for patients with no prior Lamivudine treatment, and 0.3 mg PO qd OR 1 mg PO q 72 hr for patients who are refractory/resistant to lamivudine
- If creatinine clearance <10 or hemodialysis or continuous ambulatory peritoneal dialysis give 0.05 mg PO qd OR 0.5 mg PO q7 days for patients with no prior Lamivudine treatment, and 0.1 mg PO qd OR 1 mg PO q 7 days for patients who are refractory/resistant to lamivudine.
- Note: duration of treatment is more than 1 year
- Alternative regimen (1): Interferon alpha (IFN) 5 MU daily or 10 MU thrice weekly SC for 1 year
- Alternative regimen (2): Lamivudine (LAM) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 100 mg PO qd
- If creatinine clearance 3049 give 100 mg PO first dose, then 50 mg PO qd
- If creatinine clearance 1529 give 100 mg PO first dose, then 25 mg PO qd
- If creatinine clearance 5-14 give 35 mg PO first dose, then 15 mg PO qd
- If creatinine clearance <5 give 35 mg PO first dose, then 10 mg PO qd
- The recommended dose of lamivudine for persons coinfected with HIV is 150mg PO twice daily.
- Note: duration of treatment is more than 1 year
- Alternative regimen (3): Adefovir (ADV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 10 mg PO daily
- If creatinine clearance 3049 give 10 mg PO every other day
- If creatinine clearance 1019 10 mg PO every third day
- If hemodialysis patients give 10 mg PO every week following dialysis
- Note: duration of treatment is more than 1 year
- Alternative regimen (4): Telbivudine (LdT)Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 600 mg PO once daily
- If creatinine clearance 3049 600 give mg PO once every 48 hours
- If creatinine clearance <30 (not requiring dialysis) give 600 mg PO once every 72 hours
- If End-stage renal disease give 600 mg PO once every 96 hours after hemodialysis
- Note (1): duration of treatment is more than 1 year
- Note (2): Interferon alpha (IFN)/ pegylated interferon-alpha (peg-IFN), Lamivudine (LAM), Adefovir (ADV), Entecavir (ETV), tenofovir disoproxil fumarate (TDF) or telbivudine (LdT) may be used as initial therapy.
- Note (3): Adefovir (ADV) not preferred due to weak antiviral activity and high rate of resistance after 1st year.
- Note (4): Lamivudine (LAM) and Telbivudine (LdT) not preferred due to high rate of drug resistance.
- Note (5): End-point of treatment  not defined
- Note (6): Interferon alpha (IFN)  non-responders / contraindications to IFN change to Tenofovir (TDF)/Entecavir (ETV).
- 3. HBV DNA >2,000 IU/mL and elevated ALT 1->2 times normal
- Consider liver biopsy and treat if liver biopsy shows moderate/severe necroinflammation or significant fibrosis.
- 4. HBV DNA <2,000 IU/mL and ALT < upper limit normal (ULN)
- Observe, treat if HBV DNA or ALT becomes higher.
- 5. +/- HBeAg and detectable HBV DNA with Cirrhosis
- 5.1. Compensated Cirrhosis and HBV DNA >2,000
- Preferred regimen (1): Entecavir (ETV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 give 0.5 mg PO daily for patients with no prior Lamivudine treatment, and 1 mg PO daily for patients who are refractory/resistant to lamivudine.
- If creatinine clearance 3049 give 0.25 mg PO qd OR 0.5 mg PO q48 hr for patients with no prior Lamivudine treatment, and 0.5 mg PO qd OR 1 mg PO q 48 hr for patients who are refractory/resistant to lamivudine.
- If creatinine clearance 1029 give 0.15 mg PO qd OR 0.5 mg PO q 72 hr for patients with no prior Lamivudine treatment, and 0.3 mg PO qd OR 1 mg PO q 72 hr for patients who are refractory/resistant to lamivudine.
- If creatinine clearance <10 or hemodialysis or continuous ambulatory peritoneal dialysis give 0.05 mg PO qd OR 0.5 mg PO q7 days for patients with no prior Lamivudine treatment, and 0.1 mg PO qd OR 1 mg PO q 7 days for patients who are refractory/resistant to lamivudine.
- Preferred regimen (2): Tenofovir (TDF) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 300 mg q24 hrs
- If creatinine clearance 3049 give 300 mg q48 hrs
- If creatinine clearance 1029 give 300 mg q72-96 hrs
- If creatinine clearance <10 with dialysis give 300 mg once a week or after a total of approximately 12 hours of dialysis
- If creatinine clearance <10 without dialysis there is no recommendation
- Alternative regimen (1): Lamivudine (LAM) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 100 mg PO qd
- If creatinine clearance 3049 give 100 mg PO first dose, then 50 mg PO qd
- If creatinine clearance 1529 give 100 mg PO first dose, then 25 mg PO qd
- If creatinine clearance 5-14 give 35 mg PO first dose, then 15 mg PO qd
- If creatinine clearance <5 give 35 mg PO first dose, then 10 mg PO qd
- The recommended dose of lamivudine for persons coinfected with HIV is 150mg PO twice daily.
- Alternative regimen (2): Adefovir (ADV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 10 mg PO daily
- If creatinine clearance 3049 give 10 mg PO every other day
- If creatinine clearance 1019 give 10 mg PO every third day
- If hemodialysis patients give 10 mg PO every week following dialysis
- Alternative regimen (3): Telbivudine (LdT) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 600 mg PO once daily
- If creatinine clearance 3049 600 give mg PO once every 48 hours
- If creatinine clearance <30 (not requiring dialysis) give 600 mg PO once every 72 hours
- If End-stage renal disease give 600 mg PO once every 96 hours after hemodialysis
- Note (1): LAM and LdT not preferred due to high rate of drug resistance.
- Note (2): ADV not preferred due to weak antiviral activity and high risk of resistance after 1st year.
- Note (3): These patients should receive long-term treatment. However, treatment may be stopped in HBeAg-positive patients if they have confirmed HBeAg seroconversion and have completed at least 6 months of consolidation therapy and in HBeAg-negative patients if they have confirmed HBsAg clearance.
- 5.2. Compensated Cirrhosis and HBV DNA <2,000
- Consider treatment if ALT elevated.
- 5.3. Decompensated Cirrhosis
- Preferred regimen (1): Tenofovir (TDF) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 300 mg q24 hrs
- If creatinine clearance 3049 give 300 mg q48 hrs
- If creatinine clearance 1029 give 300 mg q72-96 hrs
- If creatinine clearance <10 with dialysis give 300 mg once a week or after a total of approximately 12 hours of dialysis
- If creatinine clearance <10 without dialysis there is no recommendation
- Preferred regimen (2): Entecavir (ETV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 give 0.5 mg PO daily for patients with no prior Lamivudine treatment, and 1 mg PO daily for patients who are refractory/resistant to lamivudine.
- If creatinine clearance 3049 give 0.25 mg PO qd OR 0.5 mg PO q48 hr for patients with no prior Lamivudine treatment, and 0.5 mg PO qd OR 1 mg PO q 48 hr for patients who are refractory/resistant to lamivudine.
- If creatinine clearance 1029 give 0.15 mg PO qd OR 0.5 mg PO q 72 hr for patients with no prior Lamivudine treatment, and 0.3 mg PO qd OR 1 mg PO q 72 hr for patients who are refractory/resistant to lamivudine.
- If creatinine clearance <10 or hemodialysis or continuous ambulatory peritoneal dialysis give 0.05 mg PO qd OR 0.5 mg PO q7 days for patients with no prior Lamivudine treatment, and 0.1 mg PO qd OR 1 mg PO q 7 days for patients who are refractory/resistant to lamivudine.
- Preferred regimen (3): Lamivudine (LAM) AND Adefovir (ADV)
- Lamivudine (LAM) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 100 mg PO qd
- If creatinine clearance 3049 give 100 mg PO first dose, then 50 mg PO qd
- If creatinine clearance 1529 give 100 mg PO first dose, then 25 mg PO qd
- If creatinine clearance 5-14 give 35 mg PO first dose, then 15 mg PO qd
- If creatinine clearance <5 give 35 mg PO first dose, then 10 mg PO qd
- The recommended dose of lamivudine for persons coinfected with HIV is 150mg PO twice daily.
- Adefovir (ADV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 10 mg PO daily
- If creatinine clearance 3049 give 10 mg PO every other day
- If creatinine clearance 1019 give 10 mg PO every third day
- If hemodialysis patients give 10 mg PO every week following dialysis
- Preferred regimen (4): Telbivudine (LdT) AND Adefovir (ADV)
- Telbivudine (LdT) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 600 mg PO once daily
- If creatinine clearance 3049 600 give mg PO once every 48 hours
- If creatinine clearance <30 (not requiring dialysis) give 600 mg PO once every 72 hours
- If End-stage renal disease give 600 mg PO once every 96 hours after hemodialysis
- Adefovir (ADV) Adjustment of Adult Dosage in Accordance with Creatinine Clearance:
- If creatinine clearance >50 or normal renal function give 10 mg PO daily
- If creatinine clearance 3049 give 10 mg PO every other day
- If creatinine clearance 1019 give 10 mg PO every third day
- If hemodialysis patients give 10 mg PO every week following dialysis
- Note: coordinate treatment with transplant center and refer for liver transplant.
- Life-long treatment is recommended.
- 6. +/- HBeAg and undetectable HBV DNA  with Cirrhosis
- Compensated Cirrhosis: Observe
- Uncompensated Cirrhosis: Refer for liver transplant
- Hepatitis C virus Return to Top
Chronic Hepatitis C
- 1. Treatment regimens for chronic hepatitis C virus genotype 1
- 1.1. Treatment regimens for genotype 1a:
- Preferred regimen (1): Ledipasvir 90 mg PO qd AND Sofosbuvir 400 mg PO qd for 12 weeks
- Preferred regimen (2): Paritaprevir 150 mg PO qd AND Ritonavir 100 mg PO qd AND Ombitasvir 25 mg PO qd AND Dasabuvir 250 mg PO bid AND weight-based Ribavirin PO qd () for 12 weeks (no cirrhosis) OR 24 weeks (cirrhosis)
- Preferred regimen (3): Sofosbuvir 400 mg PO qd AND Simeprevir 150 mg PO qd  weight-based Ribavirin PO qd () for 12 weeks (no cirrhosis) or 24 weeks (cirrhosis)
- Note: these regimens are recommended for treatment-naive patients with HCV genotype 1a infection.
- 1.2. Treatment regimens for genotype 1b:
- Preferred regimen (1): Ledipasvir 90 mg PO qd AND Sofosbuvir 400 mg PO qd for 12 weeks
- Preferred regimen (2): Paritaprevir PO 150 mg qd AND Ritonavir 100 mg PO qd AND Ombitasvir 25 mg PO qd AND Dasabuvir 250 mg PO bid for 12 weeks. The addition of weight-based Ribavirin PO qd (1000 mg ) is recommended in patients with cirrhosis
- Preferred regimen (3): Sofosbuvir 400 mg PO qd AND Simeprevir 150 mg PO qd for 12 weeks (no cirrhosis) or 24 weeks (cirrhosis)
- Note: these regimens are recommended for treatment-naive patients with HCV genotype 1b infection.
- 2. Treatment regimens for chronic hepatitis C virus genotype 2
- Preferred regimen: Sofosbuvir 400 mg PO qd AND weight-based RBV (1000 mg ) for 12 weeks
- Note (1): This regimen are recommended for treatment-naive patients with HCV genotype 2 infection.
- Note (2): Extending treatment to 16 weeks is recommended in patients with cirrhosis.
- 3. Treatment regimens for chronic hepatitis C virus genotype 3
- Preferred regimen: Sofosbuvir 400 mg PO qd and weight-based Ribavirin PO qd (1000 mg ) PO qd for 24 weeks
- Alternative regimen: Sofosbuvir 400 mg and weight-based Ribavirin PO qd (1000 mg ) PO qd AND weekly PEG-IFN for 12 weeks is an acceptable regimen for IFN-eligible, treatment-naive patients with HCV genotype 3 infection.
- Note: These regimens are recommended for treatment-naive patients with HCV genotype 3 infection.
- 4. Treatment regimens for chronic hepatitis C virus genotype 4
- Preferred regimen (1): Ledipasvir 90 mg PO qd AND Sofosbuvir 400 mg PO qd for 12 weeks
- Preferred regimen (2): Paritaprevir 150 mg PO qd AND Ritonavir 100 mg PO qd AND Ombitasvir 25 mg PO qd AND weight-based Ribavirin PO qd (1000 mg ) for 12 weeks
- Preferred regimen (3): Sofosbuvir 400 mg PO qd AND weight-based Ribavirin PO qd (1000 mg ) for 24 weeks
- Alternative regimen (1): Sofosbuvir 400 mg PO qd AND weight-based Ribavirin PO qd (1000 mg ) AND weekly PEG-IFN for 12 weeks
- Alternative regimen (2): Sofosbuvir 400 mg PO qd AND Simeprevir 150 mg PO qd  weight-based Ribavirin PO qd (1000 mg ) for 12 weeks
- Note: These regimens are accpetable for treatment-naive patients with HCV genotype 3 infection.
- 5. Treatment regimens for chronic hepatitis C virus genotype 5
- Preferred regimen: Sofosbuvir 400 mg PO qd AND weight-based Ribavirin PO qd(1000 mg ) AND weekly PEG-IFN for 12 weeks is recommended for treatment-naive patients with HCV genotype 5 infection.
- Alternative regimen: Weekly PEG-IFN AND weight-based Ribavirin PO qd (1000 mg ) for 48 weeks is an alternative regimen for IFN-eligible, treatment-naive patients with HCV genotype 5 infection.
- 6. Treatment regimens for chronic hepatitis C virus genotype 6
- Preferred regimen: Ledipasvir 90 mg PO qd AND Sofosbuvir PO qd 400 mg for 12 weeks is recommended for treatment-naive patients with HCV genotype 6 infection.
- Alternative regimen: Sofosbuvir 400 mg PO qd AND weight-based Ribavirin PO qd (1000 mg ) AND weekly PEG-IFN for 12 weeks is an alternative regimen for IFN-eligible, treatment-naive patients with HCV genotype 6 infection.
- Hepatitis D virus Return to Top
- Preferred regimen: Interferon alpha(IFN) 5 MU daily OR 9 MU three times a week for 612 months 
- Hepatitis E virus Return to Top
- Hepatitis E treatment
- Preferred regimen: supportive therapy. There is no specific treatment available.
- Note (1): Hepatitis E is usually self-limiting, hospitalization is generally not required.
- Note (2): Hospitalization is required for people with fulminant hepatitis and should also be considered for symptomatic pregnant women.
- Epstein-Barr virus Return to Top
- Epstein-Barr Virus (EBV) 
- There is no vaccine to protect against EBV infection. You can help protect yourself by not kissing or sharing drinks, food, or personal items, like toothbrushes, with people who have EBV infection.
- There is no specific treatment for EBV. However, some things can be done to help relieve symptoms, including
- drinking fluids to stay hydrated
- getting plenty of rest
- taking over-the-counter medications for pain and fever
- Human herpesvirus 6 Return to Top
- Human herpesvirus 6 treatment
- Preferred regimen: supportive therapy
- Note: If patient is immunocompromised, there are no antiviral regimens stablished as there are no clinical trials to validate their use on these cases. Consider administering Ganciclovir, Acyclovir, Foscarnet OR Cidofovir.
- Roseola Return to Top
- Human herpesvirus 7 (roseola virus) treatment
- Preferred regimen: Supportive therapy
- Note (1): Immunocompetent hosts with uncomplicated skin manifestations associated with HHV-7, particularly roseola infantum and pityriasis rosea, need only symptomatic management
- Note (2): For HIV-positive patients, antiretroviral therapy may be advisable
- Note (3): The most active antiviral compounds against HHV-7 are Cidofovir and Foscarnet
- Human herpesvirus 8 (KSHV) Return to Top
- 1. Mild to moderate Kaposi sarcoma
- Preferred regimen: initiate or optimize ART
- 2. Advanced Kaposi sarcoma (ACTG Stage T1, including disseminated cutaneous or visceral Kaposi sarcoma)
- Preferred regimen: chemotherapy (per oncology consult) AND ART
- 3. Primary effusion lymphoma
- Preferred regimen: chemotherapy (per oncology consult) AND ART
- Note: Valganciclovir PO or Ganciclovir IV can be used as adjunctive therapy.
- 4. Multicentric Castleman's disease
- Preferred regimen (1): Valganciclovir 900 mg PO bid for 3 weeks
- Preferred regimen (2): Ganciclovir 5 mg/kg IV q12h for 3 weeks
- Preferred regimen (3): Valganciclovir 900 mg PO BID AND Zidovudine 600 mg PO q6h for 721 days
- Alternative regimen: Rituximab 375 mg/m2 given weekly for 48 weeks (may be an alternative to or used adjunctively with antiviral therapy)
- Herpes simplex virus Return to Top
- Genital Herpes
- 1.First Clinical Episode of Genital Herpes
- Preferred Regimen (1): Acyclovir 400 mg PO tid for 710 days
- Preferred Regimen (2): Acyclovir 200 mg PO five times a day for 710 days
- Preferred Regimen (3): Valacyclovir 1 g PO bid for 710 days
- Preferred Regimen (4): Famciclovir 250 mg PO tid  for 710 days
- Note:Treatment can be extended if healing is incomplete after 10 days of therapy.
- 2.Established HSV-2 Infection
- 2.1 Suppressive Therapy for Recurrent Genital Herpes
- Preferred Regimen (1): Acyclovir 400 mg PO bid
- Preferred Regimen (2): Valacyclovir 500 mg PO qd
- Preferred Regimen (3): Valacyclovir 1 g PO qd
- Preferred Regimen (4): Famciclovir 250 mg PO bid
- Note(1):Daily therapy with Acyclovir for as long as 6 years and with Valacyclovir  OR Famciclovir for 1 year
- Note(2):Valacyclovir 500 mg qd might be less effective than other Valacyclovir OR Acyclovir dosing regimens in persons who have very frequent recurrences (i.e., 10 episodes per year).
- 2.2 Episodic Therapy for Recurrent Genital Herpes
- Preferred Regimen (1): Acyclovir 400 mg PO tid for 5 days
- Preferred Regimen (2): Acyclovir 800 mg PO bid for 5 days
- Preferred Regimen (3): Acyclovir 800 mg  PO tid for 2 days
- Preferred Regimen (4): Valacyclovir 500 mg PO bid for 3 days
- Preferred Regimen (5): Valacyclovir 1 g PO qd for 5 days
- Preferred Regimen (6): Famciclovir 125 mg  PO bid  for 5 days
- Preferred Regimen (7): Famciclovir 1 g PO bid  for 1 day
- Preferred Regimen (8): Famciclovir 500 mg once, followed by 250 mg  PO bid  for 2 days
- 3. Severe Disease (disseminated infection, pneumonitis, or hepatitis) or CNS complications (e.g., meningoencephalitis).
- Preferred Regimen: Acyclovir 510 mg/kg IV q8h  for 27 days or until clinical improvement is observed, followed by oral antiviral therapy to complete at least 10 days of total therapy. HSV encephalitis requires 21 days of intravenous therapy. Impaired renal function warrants an adjustment in acyclovir dosage.
- 4. Special Considerations
- 4.1 HIV Infection
- 4.1.1 Daily Suppressive Therapy in Persons with HIV
- Preferred Regimen (1): Acyclovir 400800 mg PO bid /tid
- Preferred Regimen (2): Valacyclovir 500 mg  PO bid
- Preferred Regimen (3): Famciclovir 500 mg PO bid
- 4.1.2 Episodic Infection in Persons with HIV
- Preferred Regimen (1): Acyclovir 400 mg  PO tid  for 510 days
- Preferred Regimen (2): Valacyclovir 1 g PO bid for 510 days
- Preferred Regimen (3): Famciclovir 500 mg  PO bid for 510 days
- Note: For severe HSV disease, initiating therapy with Acyclovir 510 mg/kg IV q8 h might be necessary.
- 4.2 Genital Herpes in Pregnancy
- Suppressive therapy of pregnant women with recurrent genital herpes
- Preferred Regimen (1): Acyclovir 400800 mg PO bid /tid
- Preferred Regimen (2): Valacyclovir 500 mg  PO bid
- Note:Treatment recommended starting at 36 weeks of gestation.
- 4.3 Neonatal Herpes
- Known or suspected neonatal herpes
- Preferred Regimen: Acyclovir 20 mg/kg IV q 8 h
- Note (1): Treatment for 14 days if disease is limited to the skin and mucous membranes, or
- Note (2): Treatment for 21 days for disseminated disease and that involving the central nervous system.
- 4.4 Acyclovir-resistant genital herpes
- Preferred Regimens: Foscarnet  4080 mg/kg IV q8 h until clinical resolution is attained
- Alternative Regimen (1): Cidofovir 5 mg/kg  IV once weekly might also be effective.
- Alternative Regimen (2): Imiquimod topical preparations should be applied to the lesions qd for 5 consecutive days.
- 4.5 Management of Sex Partners
- Preferred Regimen (1): Acyclovir 400 mg PO tid for 710 days
- Preferred Regimen (2): Acyclovir 200 mg PO five times a day for 710 days
- Preferred Regimen (3): Valacyclovir 1 g PO bid for 710 days
- Preferred Regimen (4): Famciclovir 250 mg PO tid  for 710 days
- Note:The sex partners of persons who have genital herpes can benefit from evaluation and counseling. Symptomatic sex partners should be evaluated and treated
- 4.6 Allergy, Intolerance, and Adverse Reactions
- Allergic and other adverse reactions to oral Acyclovir, Valacyclovir, and Famciclovir are rare. Desensitization to acyclovir has been described.

# vzv
- Varicella-zoster virus Return to Top
- 1. Varicella zoster treatment
- 1.1 Non Immunocompromised person
- Preferred regimen (1): Acyclovir 500 mg PO five times a dayfor 7-10 days
- Preferred regimen (2): Famciclovir 500 mg PO tid  for 7 days
- Preferred regimen (3): Valacyclovir 1 g PO tid for 7 days
- Preferred regimen (4): Brivudin 125 mg PO qd for 7 days
- 1.2 Immunocompromised person requiring hospitalization or persons with sever neurologic complications
- Preferred regimen (1): Acyclovir 10 mg/ kg IV q8h for 7-10 days
- Preferred regimen (2): Foscarnet 40 mg/ kg IV q8h until lesions are healed
- Note: Brivudin is not available in USA and has not been approved by FDA. Foscarnet is not approve by FDA
- 2. Treatment of VZV complications
- 2.1 VZV ophthalmicus
- Treatment includes the following
- (1) Famciclovir OR Valacyclovir for 710 days, preferably started within 72 h of rash onset (with Acyclovir IV given as needed for retinitis), to resolve acute disease and inhibit late inflammatory recurrences, AND Prednisone 20 mg PO tid for 4 days or bid for 6 days, and then qd for 4 day
- (2) Bacitracin-Polymyxin ophthalmic ointment administered bid ,to protect the ocular surface;
- (3) Topical  Prednisolone 0.125%1% 26 times daily prescribed and managed only by an ophthalmologist for corneal immune disease, episcleritis, scleritis, or iritis;
- (4) Homatropine 5% bid as needed for iritis
- (5) Latanaprost qd and/or Timolol maleate ophthalmic gel forming solution every morning)ocular pressurelowering drugs given as needed for glaucoma
- Note (1): Systemic steroids are indicated in the presence of moderate to severe pain or rash, particularly if there is significant edema, which may cause orbital apex syndrome through pressure on the nerves entering the orbit.
- Note (2): pain medications and cool to tepid wet compresses (if tolerated) and no topical antivirals, because they are ineffective
- 2.2 VZV retinitis
- Preferred regimen: Acyclovir IV  1015 mg/kg q8h for 1014 days followed by Valacyclovir PO 1 g tid  daily for 46 weeks
- 3 Recommendations for treating varicella zoster virus (VZV) Infections in HIV-Infected adults and adolescents
- 3.1 Primary Varicella Infection (Chickenpox)
- 3.1.1 Uncomplicated Cases
- Preferred regimen (1):Valacyclovir 1 g PO tid for 57 days
- Preferred regimen (2): Famciclovir 500 mg PO tid  for 57 days
- Alternative regimen: Acyclovir 800 mg PO 5 times daily for 57 days
- 3.1.2 Severe or Complicated Cases
- Preferred regimen: Acyclovir 1015 mg/kg IV q8h for 710 days
- Note: May switch to oral Famciclovir, Valacyclovir, or Acyclovir after defervescence if no evidence of visceral involvement is evident
- 3.2 Herpes Zoster (Shingles)
- 3.2.1 Acute Localized Dermatomal
- Preferred regimen (1): Valacyclovir 1000 mg PO tid for 710 days
- Preferred regimen (2): Famciclovir 500 mg PO tid for 710 days
- Alternative Therapy: Acyclovir 800 mg PO 5 times daily for 710 days
- Note: Longer duration should be considered if lesions resolve slowly
- 3.2.2 Extensive Cutaneous Lesion or Visceral Involvement
- Preferred regimen: Acyclovir 1015 mg/kg IV q8h until clinical improvement is evident, then switch to (Valacyclovir 1 g PO tid, Famciclovir 500 mg PO tid, or Acyclovir 800 mg PO 5 times daily)to complete a 1014 day course, when formation of new lesions has ceased  and signs and symptoms of visceral VZV infection are improving
- 3.3 PORN (Progressive outer retinal necrosis)
- Preferred regimen: Ganciclovir 5 mg/kg and/or Foscarnet 90 mg/kg IV q12h AND Ganciclovir 2 mg/0.05mL and/or foscarnet 1.2 mg/0.05mL intravitreal twice weekly.
- Note: Duration of therapy is not well defined and should be determined based on clinical, virologic, and immunologic response in consultation with experienced ophthalmologist and optimize ART regimen.
- Note: Ganciclovir ocular implants are no longer commercially available
- 3.4 ARN (Acute retinal necrosis)
- Preferred regimen: Acyclovir 10-15 mg/kg IV q8h for 1014 days, followed by Valacyclovir 1 g PO tid for 6 weeks AND Ganciclovir 2 mg/0.05mL intravitreal qd/bid twice weekly
- Note: Duration of therapy is not well defined and should be determined based on clinical, virologic, and immunologic response in consultation with experienced ophthalmologist
- 4 Prevention  of  varicella zoster virus (VZV) Infections in HIV-Infected Adults and Adolescents
- 4.1 Pre-Exposure Prevention of VZV Primary Infection
- Indications
- Adult and adolescent patients with CD4 count 200 cells/mm3 without documentation of vaccination, health-care provider diagnosis or verification of a history of varicella or herpes zoster, laboratory confirmation of disease, or persons who are seronegative for VZV. Routine VZV serologic testing in HIV-infected adults and adolescents is not recommended.
- Vaccination
- Primary varicella vaccination (VarivaxTM), 2 doses (0.5 mL SQ) administered 3 months apart
- If vaccination results in disease because of vaccine virus, treatment with acyclovir is recommended.
- VZV-susceptible household contacts of susceptible HIV-infected persons should be vaccinated to prevent potential transmission of VZV to their HIV-infected contacts.
- If post-exposure VariZIG has been administered, wait at least 5 months before varicella vaccination.
- If post-exposure acyclovir has been administered, wait at least 3 days before varicella vaccine.
- 4.2 Post-Exposure Prophylaxis
- Indication
- Close contact with a person who has active varicella or herpes zoster, and
- Is susceptible to VZV (i.e., has no history of vaccination or of either condition, or is known to be VZV seronegative)
- Preferred regimen: VariZIG 125 IU /10 kg (maximum of 625 IU) IM, administered as soon as possible and within 10 days after exposure to a person with active varicella or herpes zoster
- Alternative regimen (Begin 710 Days After Exposure): Acyclovir 800 mg PO 5 times/day for 57 days OR Valacyclovir 1 g PO tid for 57 days
- If post-exposure VariZIG has been administered, wait at least 5 months before varicella vaccination.
- Note: Patients receiving monthly high dose IVIG (i.e., >400 mg/kg) are likely to be protected against VZV and probably do not require VariZIG if the last dose of IVIG was administered <3 weeks before VZV exposure.
- Note: Neither these pre-emptive interventions nor post-exposure varicella vaccination have been studied in HIV-infected adults and adolescents.
- If acyclovir or valacyclovir is used, varicella vaccines should not be given until at least 72 hours after the last dose of the antiviral drug.

# hpv
- Human papillomavirus Return to Top
- Anogenital Warts
- 1.Preferred regimen for External Anogenital Warts(i.e., penis, groin, scrotum, vulva, perineum, external anus, and perianus)
- 1.1 Patient-Applied: Imiquimod 3.75% or 5% cream OR Podofilox 0.5% solution or gel OR Sinecatechins 15% ointment
- 1.2 Provider-Administered: Cryotherapy with liquid nitrogen or cryoprobe  OR Surgical removal either by tangential scissor excision, tangential shave excision, curettage, laser,or electrosurgery OR Trichloroacetic acid (TCA) OR Bichloroacetic acid (BCA) 80%-90% solution
- Note (1): Many persons with external anal warts also have intra-anal warts. Thus, persons with external anal warts might benefit from an inspection of the anal canal by digital examination, standard anoscopy, or high-resolution anoscopy.
- Note (2): Might weaken condoms and vaginal diaphragms.
- 2.Alternative Regimens for External Genital Warts
- 2.1 Urethral Meatus Warts
- Preferred regimen: Cryotherapy with liquid nitrogen OR Surgical removal
- 2.2 Vaginal Warts
- Preferred regimen: Cryotherapy with liquid nitrogen OR Surgical removal  OR  (TCA OR BCA 80%90% solution)
- Note: The use of a cryoprobe in the vagina is not recommended because of the risk for vaginal perforation and fistula formation
- 2.3 Cervical Warts
- Preferred regimen: Cryotherapy with liquid nitrogen OR Surgical removal OR (TCA OR BCA 80%90% solution)
- Note: Management of cervical warts should include consultation with a specialist.For women who have exophytic cervical warts, a biopsy evaluation to exclude high-grade SIL must be performed before treatment is initiated.
- 2.4 Intra-anal Warts
- Preferred regimen: Cryotherapy with liquid nitrogen OR Surgical removal OR (TCA OR BCA 80%90% solution)
- Note: Management of intra-anal warts should include consultation with a specialist.
- 3. Specific considerations
- 3.1 Follow-up
- Most anogenital warts respond within 3 months of therapy. Factors that might affect response to therapy include immunosuppression and treatment compliance. In general, warts located on moist surfaces or in intertriginous areas respond best to topical treatment. A new treatment modality should be selected when no substantial improvement is observed after a complete course of treatment or in the event of severe side effects; treatment response and therapy-associated side effects should be evaluated throughout the course of therapy.
- 3.2 Management of sex partners
- Persons should inform current partner(s) about having genital warts because the types of HPV that cause warts can be passed on to partners. Partners should receive counseling messages that partners might already have HPV despite no visible signs of warts, so HPV testing of sex partners of persons with genital warts is not recommended.
- 3.3 Pregnancy
- Podofilox (podophyllotoxin), Podophyllin, and Sinecatechins should not be used during pregnancy. Imiquimod appears to pose low risk but should be avoided until more data are available.
- Cesarean delivery is indicated for women with anogenital warts if the pelvic outlet is obstructed or if vaginal delivery would result in excessive bleeding.
- Pregnant women with anogenital warts should be counseled concerning the low risk for warts on the larynx of their infants or children (recurrent respiratory papillomatosis).
- 3.4 HIV infection
- Data do not support altered approaches to treatment for persons with HIV infection.
- Squamous cell carcinomas arising in or resembling anogenital warts might occur more frequently among immunosuppressed persons, therefore requiring biopsy for confirmation of diagnosis for suspicious cases
- 3.5 High-grade squamous intraepithelial lesions
- Biopsy of an atypical wart might reveal HSIL or cancer of the anogenital tract. In this instance, referral to a specialist for treatment is recommended.

# influenza A& B
- Influenza A & B Return to Top
- Antiviral Medications Recommended for Treatment of Influenza
- 1. Adults
- Preferred regimen (1): Oseltamivir (Tamiflu) 75 mg PO bid for 5 days
- Preferred regimen (2): Zanamivir (Relenza) 10 mg (two 5-mg inhalations) bid for 5 days
- Preferred regimen (3): Peramivir (Rapivab) 600 mg IV for 15-30 minutes (single dose)
- Note: FDA approved and recommended Peramivir (Rapivab) for use in adults 18 yrs
- 2. Children
- 2.1 Children < 1 yr
- Preferred regimen: Oseltamivir (Tamiflu) 3 mg/kg/dose PO bid for 5 days
- 2.2 Children > 1 yr
- 2.2.1 Children  15 kg
- Preferred regimen: Oseltamivir (Tamiflu) 30 mg PO bid for 5 days
- 2.2.2 Children > 15 to 23 kg
- Preferred regimen: Oseltamivir (Tamiflu) 45 mg PO bid for 5 days
- 2.2.3 Children > 23 to 40 kg
- Preferred regimen: Oseltamivir (Tamiflu) 60 mg PO bid for 5 days
- 2.2.4 Children > 40 kg
- Preferred regimen (1): Oseltamivir (Tamiflu) 75 mg PO bid for 5 days
- Preferred regimen (2): Zanamivir (Relenza) 10 mg (two 5-mg inhalations)  bid  for 5 days, may be considered for children > 7 yrs old
- 3. Adult Patients with Renal Impairment or End Stage Renal Disease (ESRD) on Dialysis
- 3.1 Oseltamivir
- Creatinine clearance 61 to 90 mL/min-75 mg PO bid for 5 days
- Creatinine clearance 31 to 60 mL/min-30 mg PO bid for 5 days
- Creatinine clearance 10 to 30 mL/min-30 mg PO qd  for 5 days
- ESRD Patients on Hemodialysis
- Creatinine clearance 10 mL/min-30 mg after every hemodialysis cycle. Treatment duration not to exceed 5 days
- ESRD Patients on Continuous Ambulatory Peritoneal Dialysis-A single 30 mg dose administered immediately after a dialysis exchange
- 3.2 Peramivir
- Creatinine clearance >50 mL/min-600mg IV single dose
- Creatinine clearance 30 to 49 mL/min-200mg IV single dose
- Creatinine clearance 10 to 29 mL/min-100mg IV single dose
- ESRD Patients on Hemodialysis-Dose administered after dialysis at a dose adjusted based on creatinine clearance
- Note: No dose adjustment is recommended for inhaled zanamivir for a 5-day course of treatment for patients with renal impairment.
- 4. Antiviral Medications Recommended for Chemoprophylaxis of Influenza
- 4.1. Adults
- Preferred regimen (1): Oseltamivir (Tamiflu) 75 mg PO qd for 7days
- Preferred regimen (2): Zanamivir (Relenza) 10 mg (two 5-mg inhalations) qd for 7 days
- 4.2. Children
- 4.2.1 Children < 1 yr
- Preferred regimen: Oseltamivir (Tamiflu) 3 mg/kg/dose PO qd for 7 days
- 4.2.2 Children > 1 yr
- 4.2.2.1 Children  15 kg
- Preferred regimen: Oseltamivir (Tamiflu) 30 mg PO qd for 7 days
- 4.2.2.2 Children > 15 to 23 kg
- Preferred regimen: Oseltamivir (Tamiflu) 45 mg PO qd for 7 days
- 4.2.2.3 Children > 23 to 40 kg
- Preferred regimen: Oseltamivir (Tamiflu) 60 mg PO qd for 7 days
- 4.2.2.4 Children > 40 kg
- Preferred regimen (1): Oseltamivir (Tamiflu) 75 mg PO qd for 7 days
- Preferred regimen (2):  Zanamivir (Relenza) 10 mg (two 5-mg inhalations) qd  for 7 days, may be considered for children > 7 yrs older
- Note: If child is < 3 months old, use of Oseltamivir for chemoprophylaxis is not recommended unless situation is judged critical due to limited data in this age group.

# Avian influenza
- Avian influenza Return to Top
- 1. Preferred regimen:Oseltamivir 75 mg PO qd for a minimum 10 days 
- Note:Patients with severe disease may have diarrhea and may not absorb oseltamivir efficiently
- 2. Patients with Avian Influenza who have diarrhea and  malabsorption
- Preferred regimen (1): Zanamivir 10 mg inhaled bid for minimum 5 days
- Preferred regimen (2): Peramivir 600 mg IV as a single dose for 1 day
- Note(1): Preliminary evidence demonstrates that Neuraminidase inhibitor can reduce the duration of viral replication and improve survival among patients with avian influenza. In cases of suspected avian influenza, one of the following 3 neuraminidase inhibitors should be administered as soon possible, preferably within 48 hours of symptom onset.
- Note(2): The use of Corticosteroids is not recommended.
- Note(3): Physicians may consider increasing either the recommended daily dose and/or the duration of treatment in cases of severe disease.
- Note(4): The use of Amantadine is not recommended as most H5N1 and H7N9 avian influenza viruses are resistant to it.
- Note(5): Supportive care is also an important cornerstone of the care of patients with avian influenza. Considering the severity of the illness and the possible complications, patients may require fluid resuscitation, vasopressors, intubation and ventilation, paracentesis, hemodialysis or hemofiltration, and parentral nutrition.
- Swine influenza Return to Top
- Swine influenza 
- 1. Condition1: Patients who have severe or progressive clinical illness
- Preferred regimen: Oseltamivir 150 mg PO bid
- Note (1): Treatment duration depends on clinical response
- Note (2): Where the clinical course remains severe or progressive, despite 5 or more days of antiviral treatment, monitoring of virus replication and shedding, and antiviral drug susceptibility testing is desirable
- Note (3): Antiviral treatment should be maintained without a break until virus infection is resolved or there is satisfactory clinical improvement
- Note (4): Patients who have severe or progressive clinical illness, but who are unable to take oral medication may be treated with oseltamivir administered by nasogastric or orogastric tube
- 2. Condition2: In situations where oseltamivir is not available, or not possible to use, patients who have severe or progressive clinical illness
- Preferred regimen: Zanamivir inhaled
- Note: Zanamivir IV should be considered where available and is recommended for those with serious or progressive illness. If not available, Peramivir IV may be considered
- 3. Condition3: Severely immunosuppressed patients
- Preferred regimen: Antiviral chemoprophylaxis by using Oseltamivir OR Zanamivir
- Measles Return to Top
- Measles
- 1.1. Prevention
- 1.1.1. Vaccines
- Note (1): Measles can be prevented with measles-containing vaccine, which is primarily administered as the combination measles-mumps-rubella (MMR) vaccine. The combination measles-mumps-rubella-varicella (MMRV) vaccine can be used for children aged 12 months through 12 years for protection against measles, mumps, rubella and varicella. Single-antigen measles vaccine is not available.
- Note (2): Vaccination recommendations
- Children: CDC recommends routine childhood immunization for MMR vaccine starting with the first dose at 12 through 15 months of age, and the second dose at 4 through 6 years of age or at least 28 days following the first dose.
- Students at post-high school educational institutions: Students at post-high school educational institutions without evidence of measles immunity need two doses of MMR vaccine, with the second dose administered no earlier than 28 days after the first dose.
- Adults: People who are born during or after 1957 who do not have evidence of immunity against measles should get at least one dose of MMR vaccine.
- International travelers: People 6 months of age or older who will be traveling internationally should be protected against measles. Before travelling internationally,
- Infants 6 through 11 months of age should receive one dose of MMR vaccine
- Children 12 months of age or older should have documentation of two doses of MMR vaccine (the first dose of MMR vaccine should be administered at age 12 months or older; the second dose no earlier than 28 days after the first dose)
- Teenagers and adults born during or after 1957 without evidence of immunity against measles should have documentation of two doses of MMR vaccine, with the second dose administered no earlier than 28 days after the first dose
- 1.1.2. Post-exposure Prophylaxis
- 1.1.2.1. Indication
- People exposed to measles who cannot readily show that they have evidence of immunity against measles should be offered post-exposure prophylaxis (PEP) or be excluded from the setting (school, hospital, childcare). MMR vaccine, if administered within 72 hours of initial measles exposure, or immunoglobulin (IG), if administered within six days of exposure, may provide some protection or modify the clinical course of disease.
- Note (1): If MMR vaccine is not administered within 72 hours of exposure as PEP, MMR vaccine should still be offered at any interval following exposure to the disease in order to offer protection from future exposures. People who receive MMR vaccine or IG as PEP should be monitored for signs and symptoms consistent with measles for at least one incubation period.
- Note (2): If many measles cases are occurring among infants younger than 12 months of age, measles vaccination of infants as young as 6 months of age may be used as an outbreak control measure. Note that children vaccinated before their first birthday should be revaccinated when they are 12 through 15 months old and again when they are 4 through 6 years of age.
- Note (3): People who are at risk for severe illness and complications from measles, such as infants younger than 12 months of age, pregnant women without evidence of measles immunity, and people with severely compromised immune systems, should receive IG. Intramuscular IG (IGIM) should be given to all infants younger than 12 months of age who have been exposed to measles.
- Note (4):  For infants aged 6 through 11 months, MMR vaccine can be given in place of IG, if administered within 72 hours of exposure. Because pregnant women might be at higher risk for severe measles and complications, intravenous IG (IGIV) should be administered to pregnant women without evidence of measles immunity who have been exposed to measles. People with severely compromised immune systems who are exposed to measles should receive IGIV regardless of immunologic or vaccination status because they might not be protected by MMR vaccine.
- Preferred regimen: The recommended dose of IGIM is 0.5 mL/kg of body weight (maximum dose = 15 mL) and the recommended dose of IGIV is 400 mg/kg.
- Note (5): If a healthcare provider without evidence of immunity is exposed to measles, MMR vaccine should be given within 72 hours, or IG should be given within 6 days when available. Exclude healthcare personnel without evidence of immunity from duty from day 5 after first exposure to day 21 after last exposure, regardless of post-exposure vaccine.
- 1.2. Treatment
- Note (1): There is no specific antiviral therapy for measles. Medical care is supportive and to help relieve symptoms and address complications such as bacterial infections.
- Note (2): Severe measles cases among children, such as those who are hospitalized, should be treated with vitamin A. Vitamin A should be administered immediately on diagnosis and repeated the next day. The recommended age-specific daily doses are
- 50,000 IU for infants younger than 6 months of age
- 100,000 IU for infants 611 months of age
- 200,000 IU for children 12 months of age and older
- Middle East respiratory syndrome Return to Top
- Middle East Respiratory Syndrome treatment
- Preferred regimen: supportive care. There is no antiviral recommended for this infection at this moment, even though experimental therapies are at research (IFNs, Ribavirin, Lopinavir, Mycophenolic acid, Cyclosporine, Chloroquine, Chlorpromazine, Loperamide, 6-mercaptopurine and 6-thioguanine). Supportive care include: administer oxygen to patients with severe acute pulmonary infection with signs of respiratory distress, hypoxaemia or shock; use conservative fluids management, avoid administering high-dose systemic glucocorticoids, use non-invasive ventilation, but, if its nor effective, do not delay endotracheal intubation; use lung-protective strategy for intubated patients, recognize sepsis as early as possible and treat it accordingly.

# Parainfluenza virus
- Parainfluenza virus Return to Top
- Parainfluenza virus
- 1. Adults
- Preferred regimen: Ribavirin PO/IV 10 mg/kg q8h
- Day 1: Start with 600 mg loading dose,then 200 mg  q8h
- Day 2: 400 mg q8h
- Day 3: Increase the dose to a maximum of 10 mg/kg q8h
- 1.1 In case of adverse events
- Preferred regimen: Decrease dose or discontinue Ribavirin
- 1.2 Creatinine clearance
- 3050 mL/min: Ribavirin PO/IV maximal 200 mg  q8h
- 1030 mL/ min: No recommendation can be given
- Parvovirus B19 Return to Top
- Parvovirus B19
- 1. Erythema infectiosum
- Supportive therapy: Symptomatic treatment only
- 2. Arthritis/arthalgia
- Preferred regimen: Nonsteroidal anti-inflammatory drugs (NSAID)
- 3.Transient aplastic crisis
- Supportive therapy: Transfusions and oxygen
- 4. Fetal hydrops
- Supportive therapy: Intrauterine blood transfusion
- 5. Chronic infection with anemia
- Preferred regimen: IVIG and transfusion
- 6.Chronic infection without anemia
- Preferred regimen: IVIG
- BK virus Return to Top
- Human polyomavirus (BK virus) treatment
- Maintenance regimen consisting of triple immunosuppression therapy: Calcineurin inhibitor (Cyclosporine or Tacrolimus) AND an antimetabolite (Azathioprine, Mycophenolate mofetil, or Mycophenolate sodium), AND Prednisone is to discontinue completely the antimetabolite (usually Mycophenolate) and decrease the dose of the Calcineurin inhibitor.
- Alternative regimen (1): Decrease the Mycophenolate dose by 50 percent, followed by a 50 percent decrease in the Calcineurin inhibitor at three months if decoy cells persist. If using this approach, the target serum Tacrolimus trough level is 4 to 6, and the target serum Cyclosporine trough level is 60 to 100 ng/mL. Mycophenolate may be discontinued completely if viral activation persists. Maintenance immunosuppression then consists of Tacrolimus and low-dose Prednisone.
- Alternative regimen (2): Reduce both the Calcineurin inhibitor and the Mycophenolate, which allows both the targeting of two pathways and lower total immunosuppression.
- Note (1): For those who are hypogammaglobulinemic, we administer intravenous immunoglobulins (IV IG) in replacement doses of 500 mg/kg. Quantitative immunoglobulins should be checked two to three months later to determine whether hypogammaglobulinemia has recurred. Intravenous immunoglobulins (IV IG) is also an option in certain settings, based upon polymerase chain reaction (PCR) and kidney biopsy results. IVIG may contain antibodies against BK and JC virus since these viruses are ubiquitous in the general population.
- Note (2): The goals of decreased immunosuppressive therapy are to restrain viral replication without triggering rejection.
- Note (3): Reduced immunosuppression (defined as lowering mean doses of Mycophenolate and Tacrolimus) resulted in the successful elimination of viremia (mean period of six months) and allograft survival.
- Note (4): Alternative approaches to reducing immunosuppression have also been effective
- 4.1 Changing from Tacrolimus to low-dose Cyclosporine not only reduces the effect of the Calcineurin inhibitor, but also reduces Mycophenolate concentrations.
- 4.2 Replacing the Calcineurin inhibitor with Sirolimus, with or without discontinuation of the antimetabolite, has the advantage of avoiding the long-term Calcineurin inhibitor-related nephrotoxic effects.
- 4.3 Lowering the dose of Calcineurin inhibitors may slow the loss of renal function.
- Primary Regimens
- Decrease immunosuppression if possible. (Cornerstone of Treatment)
- Suggested antiviral therapy is based on anecdotal data. If progressive renal dysfunction:
- Fluoroquinolone AND IVIG 500 mg/kg IV AND Leflunomide 100 mg for daily for 3 days, then 10-20 mg PO daily
- If refractory to all of the above, add Cidofovir 5 mg/kg once per week for 2 weeks, then once every other week  if refractory to all of the above
- Ancillary Therapies in BK Virus Nephropathy
- Cidofovir 0.25-1.0 mg/kg IV biweekly for 8 wk without Probenecid, prehydration recommended
- Leflunomide 100 mg loading dose for 3 days, 20-60 mg/day, goal Leflunomide trough 50-100 ng/mL (consider lower trough goals of 20-40 ng/mL given hemolysis risk)
- IV Ig 1-2 g/kg IV for 1-2 doses or 150 mg/kg  IV biweekly for 8 wk
- Fluoroquinolones-Ciproflaxacin 500 mg/day, duration dependent on virological response.
- JC virus Return to Top
- Progressive Multifocal Leukoencephalopathy (PML) caused by JC Virus ( John Cunningham virus) infections
- There is no specific antiviral therapy for JC virus infection.
- The main treatment approach is to reverse the immunosuppression caused by HIV.
- Initiate anti retroviral therapy (ART) immediately in ART-naive patients .
- Optimize ART in patients who develop Progressive Multifocal Leukoencephalopathy in phase of HIV viremia on ART .
- Corticosteroids may be used for Progressive Multifocal Leukoencephalopathy- immune reconstitution inflammatory syndrome (IRIS) characterized by contrast enhancement, edema or mass effect, and with clinical deterioration
- Rabies Return to Top
- Rabies treatment
- Preferred regimen: no specific therapetics agents are available once the disease is established.
- Note: There are vaccines and immunoglobulins available for postexposure prophylaxis
- Postexposure prophylaxis
- 1. For non immunized individuals
- 2. For immunized individuals
- Respiratory Syncytial Virus Return to Top
- Respiratory syncytial virus treatment
- Supportive therapy
- Hydration and supplemental oxygen.
- Routine use of Ribavirin not recommended. Ribavirin therapy associated with small increases in O2 saturation.
- No consistent decrease in need for mechanical ventilation or ICU stays. High cost, aerosol administration and potential toxicity
- Note (1): In adults, Respiratory syncytial virus accounted for 10.6% of hospitalizations for pneumonia, 11.4% for COPD, 7.2% for asthma & 5.4% for CHF in pts >65 yrs of age . Respiratory syncytial virus caused 11% of clinically important respiratory illnesses in military recruits
- Note (2): Respiratory Syncytial Virus major cause of morbidity in neonates/infants.
- Note (3): Nucleic acid test now approved to detect 12 respiratory viruses (xTAG Respiratory Viral Panel, Luminex Molecular Diagnostics).
- Prevention of Respiratory syncytial virus
- 1. In children <24 months old with chronic lung disease of prematurity (formerly broncho-pulmonary dysplasia) requiring supplemental oxygen or
- 2. In premature infants (<32 wks gestation) and <6 months old at start of Respiratory syncytial virus season or
- 3. In children with selected congenital heart diseases.
- Preferred regimen for prevention of Respiratory syncytial virus: Palivizumab (Synagis) 15 mg per kg IM q month Nov.-April
- Rhinovirus Return to Top
- Rhinovirus treatment (commom cold)
- Supportive therapy
- 1. Symptomatic treatment-Ipratropium bromide intranasal (2 sprays tid) AND Clemastine 1.34 mg 12 tab PO bidtid (over the counter)
- 2. Symptomatic relief by Ipratropium nasal spray decreases rhinorrhea and sneezing vs placebo. AND Clemastine (an antihistamine) decreases sneezing, rhinorrhea but associated with dry nose, mouth & throat in 619%.OR Oral pleconaril given within 24 hrs of onset reduced duration (1 day) & severity of cold symptoms in DBPCT (p < .001).
- Note (1): No antiviral treatment indicated . 
- Note (2): Found in half of children with community-acquired pneumonia; role in pathogenesis unclear (CID 39:681, 2004). 
- Note (3): High rate of rhinovirus identified in children with significant lower resp tract infections 
- Rotavirus Return to Top
- Rotavirus treatment, 
- Treatment of diarrhoea caused by rotavirus
- Rehydration with oral rehydration salts (ORS) solution. oral rehydration salts (ORS) solution is a mixture of clean water, salt and sugar. It costs a few cents per treatment. oral rehydration salts (ORS) solution is absorbed in the small intestine and replaces the water and electrolytes lost in the faeces.
- Zinc supplements-with zinc supplements reduce the duration of a diarrhoea episode by 25% and are associated with a 30% reduction in stool volume.
- Rehydration with intravenous fluids in case of severe dehydration or shock.
- Nutrient-rich foods the vicious circle of malnutrition and diarrhoea can be broken by continuing to give nutrient-rich foods  including breast milk during an episode, and by giving a nutritious diet  including exclusive breastfeeding for the first six months of life  to children when they are well.
- Consulting a health professional , in particular for management of persistent diarrhoea or when there is blood in stool or if there are signs of dehydration.
- Prevention
- Access to safe drinking-water
- Use of improved sanitation
- Hand washing with soap
- Exclusive breastfeeding for the first six months of life
- Good personal and food hygiene
- Health education about how infections spread; and Rotavirus vaccination.

# Smallpox
- Smallpox Return to Top
- Smallpox 
- Supportive care is the mainstay of therapy.
- Currently, there are no anti-viral drugs of proven efficacy.
- Recently, animal studies suggest that cidofovir and its cyclic analogues, given at the time of or immediately after exposure, have promise for the prevention of cowpox, vaccinia, and monkeypox.
- Patients need adequate hydration and nutrition, because substantial amounts of fluid and protein can be lost by febrile persons with dense, often weeping lesions.
- 1. Secondary bacterial infection
- Penicillinase-resistant antimicrobial agents should be used
- If smallpox lesions are secondarily infected,
- If bacterial infection endangers the eyes
- Daily eye rinsing is required in severe cases.
- Topical idoxuridine should be considered for the treatment of corneal lesions, although its efficacy is unproved for smallpox.
- If the eruption is very dense and widespread.

# HIV/AIDS
- HIV/AIDS Return to Top
]- 1. Antiretroviral regimen options for treatment-naive patients
- 1.1. Integrase strand transfer inhibitor-based regimens
- Preferred regimen (1): Dolutegravir 50 mg PO qd AND Abacavir 600 mg-Lamivudine 300 mg PO qd in patients who are HLA-B*5701-negative
- Preferred regimen (2): Dolutegravir 50 mg PO qd AND Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Preferred regimen (3): Elvitegravir 150 mg-Cobicistat 150 mg-Tenofovir 300 mg-Emtricitabine 200 mg PO qd in patients with estimated CrCl  70 mL/min/1.73
- Preferred regimen (4): Raltegravir 400 mg PO bid AND Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Alternative regimen (1): Efavirenz 600 mg PO qd OR Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Alternative regimen (2): Rilpivirine 25 mg PO qd AND (Tenofovir 300 mg PO qd OR Emtricitabine 200 mg PO qd) for patients with CD4 count >200 cells/microL
- Alternative regimen (3): Raltegravir 400 mg PO bid  AND (Abacavir 600 mg PO qd OR Lamivudine 300 mg PO qd) in patients who are HLA-B*5701-negative
- 1.2. Protease inhibitor-based regimen
- Preferred regimen: Darunavir 800 mg-Ritonavir 100 mg PO qd AND Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Alternative regimen (1): Atazanavir 300 mg-Cobicistat 150 mg PO qd AND Tenofovir disoproxil fumarate 300 mg-Emtricitabine 200 mg PO qd only for patients with pre-treatment estimated CrCl 70 mL/min
- Alternative regimen (2): Atazanavir 300 mg-Ritonavir 100 mg PO qd AND Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Alternative regimen (3): (Darunavir 800 mg-Cobicistat 150 mg PO qd OR Darunavir 800 mg-Ritonavir 100 mg PO qd) AND Abacavir 600 mg-Lamivudine 300 mg PO qd only for patients who are HLA-B*5701 negative
- Alternative regimen (4): Darunavir 800 mg-Cobicistat 150 mg PO qd AND Tenofovir disoproxil fumarate 300 mg-Emtricitabine 200 mg PO qd only for patients with pre-treatment estimated CrCl 70 mL/min
- Alternative regimen (5): Atazanavir 300 mg-Ritonavir 100 mg PO qd AND Abacavir 600 mg-Lamivudine 300 mg PO qd in patients who are HLA-B*5701-negative and with pre-treatment HIV RNA <100,000 copies/mL
- Alternative regimen (6): Lopinavir 400 mg-Ritonavir 100 mg PO qd or bid AND Abacavir 600 mg-Lamivudine 300 mg PO qd only for patients who are HLA-B*5701 negative
- Alternative regimen (7): Lopinavir 400 mg-Ritonavir 100 mg PO qd or bid AND Tenofovir disoproxil fumarate 300 mg-Emtricitabine 200 mg PO qd
- 1.3. A non-nucleoside reverse transcriptase inhibitor (NNRTI) based regimen
- Alternative regimen (1): Efavirenz 600 mg-Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- Alternative regimen (2): Rilpivirine 25 mg-Tenofovir 300 mg-Emtricitabine 200 mg PO qd
- 1.4. Other regimen options
- 1.4.1. A non-nucleoside reverse transcriptase inhibitor (NNRTI) based regimen
- Preferred regimen (1):  Efavirenz 600 mg PO qd AND Abacavir 600 mg-Lamivudine 300 mg PO qd only for patients who are HLA-B*5701 negative and with pre-treatment HIV RNA <100,000 copies/mL.
- 1.4.2. Other regimens when tenofovir or abacavir cannot be used
- Preferred regimen (1): Darunavir 800 mg-Ritonavir 100 mg PO qd AND Raltegravir 400 mg PO qd only for patients with pre-treatment HIV RNA 200 cells/mm3.
- Preferred regimen (2): Lopinavir 400 mg-Ritonavir 100 mg PO bid AND Lamivudine 300 mg PO bid
- 1.5. Pediatric doses
- Abacavir 300 mg PO bid
- Lamivudine 4 mg/kg/dose PO bid; maximum 150 mg PO bid
- Stavudine 1 mg/kg/dose PO bid
- Tenofovir 8 mg/kg/dose PO bid
- Zidovudine 180-240 mg/m2/dose PO bid or 160 mg/m2/dose PO tid (range 90 mg/m2/dose-180 mg/m2/dose)
- Lopinavir 400 mg PO bid
- Nelfinavir 50 mg/kg/dose PO bid
- Raltegravir 300 mg PO bid
- Didanosine
- 20 to < 25 kg: 200 mg PO qd
- 25 to < 60 kg: 250 mg PO qd
- 60 kg: 400 mg PO qd
- Efavirenz
- 10 to < 15 kg: 200 mg PO qd
- 15 to <20 kg: 250 mg PO qd
- 20 to < 25 kg: 300 mg PO qd
- 25 to < 32.5 kg: 350 mg PO qd
- 32.5 to <40 kg: 400 mg PO qd
-  40 kg: 600 mg PO qd
- Nevirapine maximum 200 mg per dose
- Between 1 day and 8 years: 200 mg/m2/dose PO qd for 14 days, then 200 mg/m2/dose PO bid
- 8 years and above: 120-150 mg/m2/dose PO qd for 14 days, then 120-150 mg/m2/dose PO bid
- Note (1): Anti retroviral therapy for treatment naive patients is a life long therapy.
- Note (2): Tenofovir disoproxil fumarate should be avoided in patients with a creatinine clearance <50 mL/min.
- Note (3): Rilpivirine should be used in patients with a CD4 cell count >200 copies/mL and should not be used with proton pump inhibitors.
- Note (4): Efavirenz should not be used in pregnant women.
- 2. Pre-exposure prophylaxis (PrEP)
- Preferred regimen: Tenofovir disoproxil fumarate 300 mg-Emtricitabine 200 mg PO qd for 90-days
- Note (1): People with high risk behavior such as men who have sex with men, intravenous drug abusers, HIV-positive sexual partner, recent bacterial STI, high number of sex partners, history of inconsistent or no condom use, commercial sex work, people in high-prevalence area or network are advised to take pre-exposure prophylaxis of drugs.
- Note (2): Follow-up visits at least every 3 months to provide the following: HIV test, medication adherence counseling, behavioral risk reduction support, side effect assessment, STI symptom assessment, pregnancy testing.
- Note (3): At 3 months and every 6 months thereafter, assess renal function.
- Note (4): Every 6 months, test for bacterial STIs.
- 3. Post- exposure prophylaxis
- Preferred regimen: Raltegravir 400 mg PO bid AND Tenofovir disoproxil fumarate 300 mg-Emtricitabine 200 mg PO qd
- Preferred basic regimen for low-risk exposures (Eg: mucus membrane):
Zidovudine 100 mg PO qd AND Lamivudine 300 mg PO qd
Zidovudine 100 mg PO qd AND Emtricitabine 200 mg PO qd
Tenofovir 300 mg PO qd AND Lamivudine 300 mg PO qd
Tenofovir 300 mg PO qd AND Emtricitabine 200 mg PO qd
- Zidovudine 100 mg PO qd AND Lamivudine 300 mg PO qd
- Zidovudine 100 mg PO qd AND Emtricitabine 200 mg PO qd
- Tenofovir 300 mg PO qd AND Lamivudine 300 mg PO qd
- Tenofovir 300 mg PO qd AND Emtricitabine 200 mg PO qd
- Preferred expanded regimen for high-risk exposure (Eg: percutaneous needle stick)
Zidovudine 100 mg PO qd AND Lamivudine 300 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
Zidovudine 100 mg PO qd AND Emtricitabine 200 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
Tenofovir 300 mg PO qd AND Lamivudine 300 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
Tenofovir 300 mg PO qd AND Emtricitabine 200 mg PO qdAND Lopinavir 400 mg-Ritonavir 100 mg PO qd
- Zidovudine 100 mg PO qd AND Lamivudine 300 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
- Zidovudine 100 mg PO qd AND Emtricitabine 200 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
- Tenofovir 300 mg PO qd AND Lamivudine 300 mg PO qd AND Lopinavir 400 mg-Ritonavir 100 mg PO qd
- Tenofovir 300 mg PO qd AND Emtricitabine 200 mg PO qdAND Lopinavir 400 mg-Ritonavir 100 mg PO qd
- Note: Ideally therapy should be started within hours of exposure and continued for 28 days.
- 4. Perinatal antiretroviral regimen
- 4.1. Antepartum
- 4.1.1. Protease inhibitor-based regimen
- Preferred regimen: (Tenofovir 300 mg-Emtricitabine 200 mg PO qd (fixed dose combination) OR Tenofovir 300 mg-Lamivudine 300 mg PO qd OR Abacavir 600 mg-Lamivudine 300 mg PO qd OR Zidovudine 100 mg-Lamivudine 300 mg PO qd) AND (Atazanavir 300 mg-Ritonavir 100 mg PO qd OR Lopinavir 400 mg-Ritonavir 100 mg PO qd)
- 4.1.2. A non-nucleoside reverse transcriptase inhibitor (NNRTI) based regimen:
- Preferred regimen (1): Efavirenz 600 mg-Tenofovir 300 mg-Emtricitabine 200 mg (fixed dose combination) PO qd
- Preferred regimen (2): Efavirenz 600 mg-Tenofovir 300 mg-Lamivudine 300 mg PO qd
- Alternative regimen: (Abacavir 600 mg-Lamivudine 300 mg PO qd OR Zidovudine 100 mg-Lamivudine 300 mg PO qd) AND Efavirenz 600 mg PO qd
- 4.2. Intrapartum
- Note (1): HIV RNA <1000 copies/mL and good adherance-Continue the regimen during delivery or cessarean section.
- Note (2): HIV RNA >1000 copies/mL near delivery, possible poor adherence, or unknown HIV RNA levels- Intravenous Zidovudine 2 mg/kg IV over 1 hr should be given three hours before cesarean section or delivery and then 1 mg/kg/hr IV continuous infusion until umbilical cord clamping.
- 4.3. Postpartum
- Note: Initiate anti retroviral therapy (ART) and continue after delivery and cessation of breastfeeding.
- 5. Infant antiretroviral prophylaxis for prevention of mother-to-child transmission of HIV
- 5.1 Prophylaxis for HIV-exposed infants of women who received antepartum antiretroviral prophylaxis
- Preferred regimen: Zidovudine (ZDV) 100 mg PO given at birth and continued till six weeks
- Note (1): Dose based on gestational age at birth and weight, initiated as soon after birth as possible and preferably within 6 to 12 hours of delivery.
- Note (2): 35 weeks gestation at birth: 4 mg/kg/dose orally (or, if unable to tolerate oral agents, 3 mg/kg/dose IV) every 12 hours.
- Note (3): 30 to <35 weeks gestation at birth: 2 mg/kg/dose orally (or 1.5 mg/kg/dose IV) every 12 hours, advanced to 3 mg/kg/dose orally (or 2.3 mg/kg/dose IV) every 12 hours at age 15 days.
- Note (4): <30 weeks gestation at birth: 2 mg/kg/dose orally (or 1.5 mg/kg/dose IV) every 12 hours, advanced to 3 mg/kg/dose orally (or 2.3 mg/kg/dose IV) every 12 hours after age four weeks.
- 5.2. Prophylaxis for HIV-exposed infants of women who received no antepartum antiretroviral prophylaxis
- Dose based on birth weight, initiated as soon after birth as possible.
- Birth weight 1.5 to 2 kg: 8 mg/dose orally.
- Birth weight >2 kg: 12 mg/dose orally.
- Dose based on gestational age at birth and weight, initiated as soon after birth as possible and preferably within 6 to 12 hours of delivery.
- 35 weeks gestation at birth: 4 mg/kg/dose orally (or, if unable to tolerate oral agents, 3 mg/kg/dose IV) every 12 hours.
- 30 to <35 weeks gestation at birth: 2 mg/kg/dose orally (or 1.5 mg/kg/dose IV) every 12 hours, advanced to 3 mg/kg/dose orally (or 2.3 mg/kg/dose IV) every 12 hours at age 15 days.
- <30 weeks gestation at birth: 2 mg/kg/dose orally (or 1.5 mg/kg/dose IV) every 12 hours, advanced to 3 mg/kg/dose orally (or 2.3 mg/kg/dose IV) every 12 hours after age four weeks.
- Note (1): Three doses in the first week of life.
- Note (2): First dose within 48 hours of birth (birth to 48 hrs).
- Note (3): Second dose 48 hours after first.
- Note (4): Third dose 96 hours after second.
- 6. Treatment and prevention of opportunistic infections
- 6.1. Pneumocystis pneumonia (PCP)
- 6.1.1. Prevention
- Indication
- CD4 count <200 cells/mm3
- Oropharyngeal candidiasis
- CD4 <14%
- History of AIDS-defining illness
- CD4 count >200 but <250 cells/mm3 if monitoring CD4 cell count every 3 months is not possible.
- Preferred regimen: Trimethoprim/sulfamethoxazole 160 mg/800 mg PO qd or 80 mg/400 mg PO qd
- Alternative regimen (1): Trimethoprim/sulfamethoxazole 160 mg/800 mg PO three times weekly
- Alternative regimen (2): Dapsone 100 mg PO qd or 50 mg PO bid
- Alternative regimen (3): Dapsone 50 mg PO qd AND (Pyrimethamine 50 mg-Leucovorin 25 mg) PO weekly
- Alternative regimen (4): Dapsone 200 mg PO qd AND (Pyrimethamine 75 mg-Leucovorin 25 mg) PO weekly
- Alternative regimen (5): Aerosolized Pentamidine 300 mg via Respigard nebulizer every month
- Alternative regimen (6): Atovaquone 1500 mg PO qd
- Alternative regimen (7): Atovaquone 1500 mg AND (Pyrimethamine 25 mg AND Leucovorin 10 mg) PO qd
- 6.1.2. Treatment
- 6.1.2.1. For Moderate-to-Severe PCP'
- Preferred regimen:  Trimethoprim 1520 mg AND Sulfamethoxazole 75100 mg/kg/day IV given q6h or q8h, may switch to PO after clinical improvement
- Alternative regimen (1): Pentamidine 4 mg/kg IV daily infused over 60 minutes
- Note: Reduce dose to 3 mg/kg IV daily if toxic.
- Alternative regimen (2): Primaquine 30 mg (base) PO qd AND (Clindamycin 600 mg q6h IV OR 900 mg IV q8h OR Clindamycin 450 mg PO qid or 600 mg PO tid)
- 6.1.2.2. For Mild-to-Moderate PCP
- Preferred regimen: Trimethoprim 1520 mg AND Sulfamethoxazole 75100 mg/kg/day PO in TID OR Trimethoprim/sulfamethoxazole 160 mg/800 mg 2 tablets PO tid
- Alternative regimen (1): Dapsone 100 mg PO qd AND TMP 5 mg/kg PO tid
- Alternative regimen (2): Primaquine 30 mg (base) PO qd AND (Clindamycin 450 mg PO qid or 600 mg PO tid OR Atovaquone 750 mg PO bid with food)
- 6.1.3. Secondary prophylaxis, after completion of PCP treatment
- Preferred regimen (1): Trimethoprim/Sulfamethoxazole 160 mg/800 mg  PO qd OR Trimethoprim/Sulfamethoxazole 80 mg/400 mg PO qd
- Alternative regimen (1): Trimethoprim/sulfamethoxazole 160 mg/800 mg PO three times weekly
- Alternative regimen (2): Dapsone 100 mg PO qd
- Alternative regimen (3): Dapsone 50 mg PO qd AND Pyrimethamine 50 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (4): Dapsone 200 mg PO AND Pyrimethamine 75 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (5): Dapsone 100 mg PO qd
- Alternative regimen (6): Dapsone 50 mg PO qd AND Pyrimethamine 50 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (7): Dapsone 200 mg PO AND Pyrimethamine 75 mg PO AND Leucovorin 25 mg PO weekly
- Alternative regimen (8): Aerosolized Pentamidine 300 mg monthly via Respirgard nebulizer
- Alternative regimen (9): Atovaquone 1500 mg PO qd
- Alternative regimen (10): Atovaquone 1500 mg PO AND Pyrimethamine 25 mg PO AND Leucovorin 10 mg PO qd
- 6.1.4. Adjunctive corticosteroids
- Indications- PaO2 35 mmHg.
- Preferred regimen:
- Days 15: 40 mg PO bid
- Days 610: 40 mg PO qd
- Days 1121: 20 mg PO qd
- Note (1): Trimethoprim/sulfamethoxazole should be permanently discontinued in patients with possible or definite stevens johnson syndrome or toxic epidermal necrosis.
- Note (2): Whenever possible, patients should be tested for G6PD before use of Dapsone or Primaquine. Alternative regimen should be used in patients found to have G6PD deficiency.
- 6.2. Toxoplasma gondii encephalitis
- 6.2.1. Prevention
- 6.2.1.1. Indication
- Toxoplasma IgG-positive patients with CD4 count <100 cells/L.
- Seronegative patients receiving PCP prophylaxis not active against toxoplasmosis should have toxoplasma serology retested if CD4 count decline to <100 cellsL.
- Prophylaxis should be initiated if seroconversion occurred.
- Preferred regimen: Trimethoprim/sulfamethoxazole 160 mg/800 mg PO qd
- Alternative regimen (1): Trimethoprim/sulfamethoxazole 160 mg/800 mg PO three times weekly
- Alternative regimen (2): Trimethoprim/sulfamethoxazole 80 mg/400 mg PO qd
- Alternative regimen (3): Dapsone 50 mg PO qd AND Pyrimethamine 50 mg PO weekly AND Leucovorin 25 mg PO weekly
- Alternative regimen (4): Dapsone 200 mg PO weekly AND Pyrimethamine 75 mg PO weekly AND Leucovorin 25 mg PO weekly
- Alternative regimen (5): Atovaquone 1500 mg PO qd
- Alternative regimen (6): Atovaquone 1500 mg PO qd AND Pyrimethamine 25 mg PO qd AND Leucovorin 10 mg PO qd
- 6.2.2. Treatment
- 6.2.2.1. Treatment of acute infection
- Preferred regimen: Pyrimethamine 200 mg PO single dose, followed by weight-based therapy:
- If <60 kg, Pyrimethamine 50 mg PO qd AND Sulfadiazine 1000 mg PO qid AND Leucovorin 1025 mg PO qd
- If 60 kg, Pyrimethamine 75 mg PO qd AND Sulfadiazine 1500 mg PO qid AND Leucovorin 1025 mg PO qd
- Note: At least 6 weeks; longer duration if clinical or radiologic disease is extensive or response is incomplete at 6 weeks.
- Alternative regimen (1): Pyrimethamine 50 mg  PO qdAND Leucovorin 1025 mg PO qd AND Clindamycin 600 mg IV or PO q6h
- Alternative regimen (2): Trimethoprim 5 mg/kg-Sulfamethoxazole 25 mg/kg  IV or PO bid
- Alternative regimen (3): Atovaquone 1500 mg PO bid with food AND Pyrimethamine 50 mg PO qd AND Leucovorin 1025 mg PO qd
- Alternative regimen (4): Atovaquone 1500 mg PO bid with food AND Sulfadiazine 10001500 mg PO qid (weight-based dosing, as in preferred therapy)
- Alternative regimen (5): Atovaquone 1500 mg PO bid with food
- Alternative regimen (6): Pyrimethamine 50 mg-Leucovorin 1025 mg PO qd AND Azithromycin 9001200 mg PO qd
- 6.2.2.2. Chronic maintenance therapy
- Preferred regimen: Pyrimethamine 2550 mg PO qd AND Sulfadiazine 20004000 mg PO qd (in 24 divided doses) AND Leucovorin 1025 mg PO qd
- Alternative regimen (1): Clindamycin 600 mg PO tid AND Pyrimethamine 2550 mg-Leucovorin 1025 mg PO qd
- Alternative regimen (2): Trimethoprim/sulfamethoxazole 160 mg/800 mg bid
- Alternative regimen (3): Atovaquone 7501500 mg PO bid AND Pyrimethamine 25 mg-Leucovorin 10 mg PO qd
- Alternative regimen (4): Atovaquone 7501500 mg PO bid AND Sulfadiazine 20004000 mg PO qd in 24 divided doses
- Alternative regimen (5): Atovaquone 7501500 mg PO bid with food
- 6.3. Mycobacterium tuberculosis infection
- 6.3.1. Prevention
- 6.3.1.1. Indication
- Positive screening test for latent tuberculosis infection, with no evidence of active tuberculosis, and no prior treatment for active tuberculosis or latent tuberculosis infection.
- Close contact with a person with infectious tuberculosis, with no evidence of active tuberculosis, regardless of screening test results.
- Preferred regimen: (Isoniazid 300 mg PO qd AND Pyridoxine 25 mg PO qd for 9 months) OR (Isoniazid 900 mg PO two times a week (by DOT) AND Pyridoxine 25 mg PO qd for 9 months)
- Alternative regimen (1): Rifampin 600 mg PO qd for 4 months
- Alternative regimen (2): Rifabutin (dose adjusted based on concomitant ART) PO qd for 4 months
- 6.3.2. Treatment
- Preferred regimen
- Initiation phase: Isoniazid 300 mg PO qd AND (Rifampin 600 mg PO qd OR Rifabutin 300 mg PO qd) AND Pyrazinamide  (upto 2000 mg) PO qd AND Ethambutol (upto 1600 mg) PO qd for initial phase for 2 months.
- Continuation phase: Isoniazid 300 mg PO qd AND (Rifampin 600 mg PO qd OR Rifabutin 300 mg PO qd) (57 times/week) or three times a week.
- Duration of therapy:
- Pulmonary tuberculosis: 6 months
- Pulmonary tuberculosis and culture positive after 2 months of tuberculosis treatment: 9 months
- Extra-pulmonary tuberculosis w/CNS infection: 912 months
- Extra-pulmonary tuberculosis with bone or joint involvement: 6 to 9 months
- Extra-pulmonary tuberculosis in other sites: 6 months
- Total duration of therapy should be based on number of doses received, not on calendar time
- 6.3.1.3. Treatment for drug-resistant tuberculosis
- Resistant to Isoniazid:
- Preferred regimen (1): (Rifampin 600 mg PO qd OR Rifabutin 300mg PO qd) AND Ethambutol (upto 1600 mg) PO qd AND Pyrazinamide (upto 2000 mg) PO qd AND (Moxifloxacin 400 mg PO or IV qd OR Levofloxacin 500-1000 mg PO or IV qd) for 2 months; followed by Rifampin 600 mg PO qd for 7 months.
- Preferred regimen (2): Rifabutin 300mg PO qd AND Ethambutol (upto 1600 mg) PO qd AND (Moxifloxacin 400 mg PO or IV qdOR Levofloxacin 500-1000 mg PO or IV qd) for 7 months
- 6.4. Disseminated mycobacterium avium complex (MAC) disease
- 6.4.1. Prevention
- 6.4.1.1. Indication-CD4 count <50 cells/Lafter ruling out active disseminated MAC disease based on clinical assessment
- Preferred regimen (1): Azithromycin 1200 mg PO once weekly
- Preferred regimen (2): Clarithromycin 500 mg PO bid
- Preferred regimen (3): Azithromycin 600 mg PO twice weekly.
- 6.4.2. Treatment
- Preferred regimen:  Clarithromycin 500 mg PO bid AND Ethambutol 15 mg/kg PO qd OR Azithromycin 500600 mg PO qd for at least 12 months of therapy
- Note (1): Treatment can be discontinued if no signs and symptoms of MAC disease and sustained (>6 months) CD4 count >100 cells/L in response to anti retroviral therapy.
- Note (2): Addition of a third or fourth drug should be considered for patients with advanced immunosuppression (CD4 counts 2 log CFU/mL of blood), or in the absence of effective anti retroviral therapy which include Amikacin 1015 mg/kg IV qd, Streptomycin 1 g IV or IM qd, Moxifloxacin 400 mg PO qd, Levofloxacin 500 mg PO qd.
- 6.5. Streptococcus pneumoniae infection
- 6.5.1. Prevention
- 6.5.1.1. Indication
- 6.5.1.1.1. For individuals who have not received any pneumococcal vaccine, regardless of CD4 count
- Preferred regimen: PCV13 0.5ml IM single dose
- Alternative regimen: PPV23 0.5 mL IM or SQ single dose
- Note (1): If CD4 count 200 cells/L, administer PPV23 0.5 mL IM or SQ at least 8 weeks after the PCV13 vaccine.
- Note (2): If CD4 count <200 cells/L, PPV23 can be offered at least 8 weeks after receiving PCV13 or can wait until CD4 count increased to 200 cells/L.
- 6.5.1.1.2. For individuals who have previously received PPV23
- Note: One dose of PCV13 should be given atleast 1 year after the last receipt of PPV23
- 6.5.1.1.3. Re-vaccination
- If age 1964 years and 5 years since the first PPV23 dose  PPV23 0.5 mL IM or SQ
- If age 65 years, and if 5 years since the previous PPV23 dose PPV23 0.5 mL IM or SQ
- If age 65 years, and if 5 years since the previous PPV23 dose PPV23 0.5 mL IM or SQ
- 6.6. Influenza A and B virus infection
- 6.6.1. Prevention
- 6.6.1.1. Indication
- All HIV-infected patients
- Note (1): Inactivated influenza vaccine annually (per recommendation for the season).
- Note (2): Live-attenuated influenza vaccine is contraindicated in HIV-infected patients.
- 6.7. Syphilis
- 6.7.1. Prevention
- 6.7.1.1. Indication
- For individuals exposed to a sex partner with a diagnosis of primary, secondary, or early latent syphilis within past 90 days.
- For individuals exposed to a sex partner >90 days before syphilis diagnosis in the partner, if serologic test results are not available immediately and the opportunity for follow-up is uncertain.
- Preferred regimen: Benzathine penicillin G 2.4 million units IM single dose
- Alternative regimen (1): Doxycycline 100 mg PO bid for 14 days
- Alternative regimen (2): Ceftriaxone 1 g IM or IV q24h for 8 10 days
- Alternative regimen (3): Azithromycin 2 g PO single dose
- Note: Azithromycin is not recommended for MSM or pregnant women.
- 6.7.2. Treatment
- 6.7.2.1. Early stage (primary, secondary, and early-latent syphilis)
- Preferred regimen:  Benzathine penicillin G 2.4 million units IM single dose
- Alternative regimen (1): Doxycycline 100 mg PO bid for 14 days
- Alternative regimen (2): Ceftriaxone 1 g IM or IV q24h for 1014 days
- Alternative regimen (3): Azithromycin 2 g PO single dose
- 6.7.2.2. Late-stage (tertiarycardiovascular or gummatous disease)
- Preferred regimen: Benzathine penicillin G 2.4 million units IM weekly for 3 doses
- Alternative regimen: Doxycycline 100 mg PO bid for 28 days
- 6.7.2.3. Neurosyphilis (including otic or ocular disease)
- Preferred regimen: Aqueous crystalline Penicillin G 18 24 million units per day (administered as 34 million units IV q4h or by continuous IV infusion) for 1014 days with or without Benzathine penicillin G 2.4 million units IM weekly for 3 doses after completion of IV therapy
- Alternative regimen: Procaine penicillin 2.4 million units IM q24h AND Probenecid 500 mg PO qid for 1014 days  with or without Benzathine penicillin G 2.4 million units IM weekly for 3 doses after completion
- Note (1): The Jarisch-Herxheimer reaction is an acute febrile reaction accompanied by headache and myalgia that can occur within the first 24 hours after therapy for syphilis.
- Note (2): This reaction occurs most frequently in patients with early syphilis, high nontreponemal titers and prior penicillin treatment.
- 6.8. Histoplasma capsulatum infection
- 6.8.1. Prevention
- 6.8.1.1. Indication
- CD4 count 150 cells/L and at high risk because of occupational exposure or live in a community with a hyperendemic rate of histoplasmosis (>10 cases/100 patient-years).
- Preferred regimen: Itraconazole 200 mg PO qd
- 6.8.2. Treatment
- 6.8.2.1. Moderately severe to severe disseminated disease
- Induction therapy (for at least 2 weeks or until clinically improved)
- Preferred regimen: Liposomal Amphotericin B 3 mg/kg IV q24h
- Maintenance therapy:
- Preferred regimen: Itraconazole 200 mg PO tid for 3 days, then 200 mg PO bid
- 6.8.2.2. Less severe disseminated disease
- Induction therapy:
- Preferred regimen: Liposomal Amphotericin B 3 mg/kg IV q24h
- Alternative regimen: Amphotericin B lipid complex 3 mg/kg IV q24h OR Amphotericin B cholesteryl sulfate complete 3 mg/kg IV q24h
- Note: Induction therapy should be for at least 2 weeks or until clinically improved.
- Maintenance therapy:
- Preferred regimen: Itraconazole 200 mg PO tid for 3 days and then Itraconazole 200 mg PO bid for 12 months
- Alternative regimen (1): Voriconazole 400 mg PO bid for 1 day, then 200 mg bid
- Alternative regimen (2): Posaconazole 400 mg PO bid
- Alternative regimen (3): Fluconazole 800 mg PO qd
- 6.8.2.3. Meningitis
- Induction therapy:
- Preferred regimen: Liposomal amphotericin B 5 mg/kg/day for 46 weeks
- Maintenance therapy:
- Preferred regimen: Itraconazole 200 mg PO bid to tid for 1 year
- Note: Treatment continued until resolution of abnormal CSF findings.
- Long-Term Suppression Therapy
- Preferred regimen: Itraconazole 200 mg PO qd
- Alternative regimen: Fluconazole 400 mg PO qd
- Note: Therapeutic drug monitoring and dosage adjustment may be necessary to ensure Triazole antifungal and ARV efficacy and reduce concentration-related toxicities.
- 6.9. Coccidioidomycosis
- 6.9.1. Prevention
- 6.9.1.1. Indication
- A new positive IgM or IgG serologic test in patients who live in a disease-endemic area and with CD4 count <250 cells/L.
- Preferred regimen: Fluconazole 400 mg PO qd
- 6.9.2. Treatment
- 6.9.2.1. Clinically mild infections (e.g., focal pneumonia)
- Preferred regimen: Fluconazole 400 mg PO qd OR Itraconazole 200 mg PO bid
- Alternative regimen: Posaconazole 200 mg PO bid OR Voriconazole 200 mg PO bid
- 6.9.2.2. Severe, non-meningeal infection (diffuse pulmonary infection or severely ill patients with extrathoracic, disseminated disease)
- Preferred regimen: Amphotericin B deoxycholate 0.71.0 mg/kg IV qd OR Lipid formulation Amphotericin B 46 mg/kg IV qd
- Alternative regimen: Fluconazole or Itraconazole, with Itraconazole preferred for bone disease 400 mg per day to Amphotericin B therapy and continue triazole once Amphotericin B is stopped.
- 6.9.2.3. Meningeal infections
- Preferred regimen: Fluconazole 400800 mg IV or PO qd
- Alternative regimen: Itraconazole 200 mg PO tid for 3 days, then 200 mg PO bid OR Posaconazole 200 mg PO bid OR Voriconazole 200400 mg PO bid
- 6.9.2.4. Chronic suppressive therapy
- Preferred regimen: Fluconazole 400 mg PO qd OR Itraconazole 200 mg PO bid
- Alternative regimen:  Posaconazole 200 mg PO bid OR Voriconazole 200 mg PO bid
- Note (1): Therapy should be continued indefinitely in patients with diffuse pulmonary or disseminated diseases because relapse can occur in 25%33% of HIV-negative patients. It can also occur in HIV-infected patients with CD4 counts >250 cells/L.
- Note (2): Therapy should be lifelong in patients with meningeal infections because relapse occurs in 80% of HIV-infected patients after discontinuation of triazole therapy.
- 6.10. Herpes simplex virus (HSV) Disease
- 6.10.1. Orolabial lesions (For 510 Days)
- Preferred regimen (1): Valacyclovir 1 g PO bid
- Preferred regimen (2): Famciclovir 500 mg PO bid
- Preferred regimen (3): Acyclovir 400 mg PO tid
- 6.10.2. Initial or recurrent genital HSV (For 514 Days)
- Preferred regimen (1): Valacyclovir 1 g PO bid
- Preferred regimen (2): Famciclovir 500 mg PO bid
- Preferred regimen (3): Acyclovir 400 mg PO tid
- 6.10.3. Severe mucocutaneous HSV
- Preferred regimen:  Initial therapy Acyclovir 5 mg/kg IV q8h.
- Note:  After lesions begin to regress, change to PO therapy as above. Continue until lesions are completely healed.
- 6.10.4. Chronic suppressive therapy
- Preferred regimen (1): Valacyclovir 500 mg PO bid
- Preferred regimen (2): Famciclovir 500 mg PO bid
- Preferred regimen (3): Acyclovir 400 mg PO bid
- 6.10.4. For acyclovir-resistant HSV
- Preferred therapy: Foscarnet 80120 mg/kg/day IV q12h-q8h
- Alternative regimen: Cidofovir IV OR Topical Trifluridine OR Topical Imiquimod for 21-28 days
- Note: Continue indefinitely regardless of CD4 cell count.
- 6.11. Varicella-zoster virus (VZV) infection
- 6.11.1. Varicella-zoster virus (VZV) infection
- 6.11.1.2 Prevention
- 6.11.1.1. Pre-exposure prevention
- Indication: Patients with CD4 counts 200 cells/L who have not been vaccinated, have no history of varicella or herpes zoster, or who are seronegative for VZV.
- Preferred regimen: Primary varicella vaccination, 2 doses (0.5 mL SQ each) administered 3 months apart
- Alternative regimen: VZV-susceptible household contacts of susceptible HIV-infected persons should be vaccinated to prevent potential transmission of VZV to their HIV-infected contacts
- Note (1):  Routine VZV serologic testing in HIV-infected adults and adolescents is not recommended.
- Note (2): If vaccination results in disease because of vaccine virus, treatment with Acyclovir is recommended.
- 6.11.1.2. Post-exposure prevention
- Indication: Close contact with a person with chickenpox or herpes zoster; and is susceptible (i.e., no history of vaccination or of either condition, or known to be VZV seronegative).
- Preferred regimen: Varicella-zoster immune globulin (VariZIGTM) 125 international units per 10 kg (maximum 625 international units) IM, administered as soon as possible and within 10 days after exposure.
- Alternative regimen (1): Acyclovir 800 mg PO qd for 5 7 days
- Alternative regimen (2): Valacyclovir 1 g PO tid for 57 days
- Note (1):  Individuals receiving monthly high-dose IVIG (>400 mg/kg) are likely to be protected if the last dose of IVIG was administered <3 weeks before exposure.
- Note (2): If antiviral therapy is used, varicella vaccines should not be given until at least 72 hours after the last dose of the antiviral drug.
- 6.11.1.2. Treatment
- 6.11.1.2.1 Primary varicella infection (chickenpox)
- 6.11.1.2.1. Uncomplicated cases (For 57 Days)
- Preferred regimen (1):  Valacyclovir 1 g PO tid
- Preferred regimen (2): Famciclovir 500 mg PO tid
- 6.11.1.2.1. Severe or complicated Cases
- Preferred regimen: Acyclovir 1015 mg/kg IV q8h for 710 days.
- Alternative regimen: Acyclovir 800 mg PO 5 times/day for 5-7 days.
- 6.11.1.2.2. Herpes zoster (Shingles)
- 6.11.1.2.2.1. Acute localized dermatomal
- Preferred regimen (1): Valacyclovir 1 g PO tid for 710 days; consider longer duration if lesions are slow to resolve
- Preferred regimen (2): Famciclovir 500 mg tid for 710 days; consider longer duration if lesions are slow to resolve
- 6.11.1.2.2.2. Extensive cutaneous lesion or visceral involvement
- Preferred regimen: Acyclovir 1015 mg/kg IV q8h until clinical improvement is evident.
- Note: Treatment may switch to PO therapy (Valacyclovir, Famciclovir, or Acyclovir) after clinical improvement (i.e., when no new vesicle formation or improvement of signs and symptoms of visceral VZV), to complete a 1014 day course.
- Alternative regimen: Acyclovir 800 mg PO 5 times/day for 710 days; consider longer duration if lesions are slow to resolve.
- 6.11.1.2.2.3. Progressive outer retinal necrosis (PORN)
- Preferred regimen: (Ganciclovir 5 mg/kg with or without Foscarnet 90 mg/kg) IV q12h AND (Ganciclovir 2 mg/0.05mL with or without Foscarnet 1.2 mg/0.05 ml) intravitreal injection biweekly.
- 6.11.1.2.2.4. Acute retinal necrosis (ARN)
- Preferred regimen: Acyclovir 10-15 mg/kg IV q8h AND (Ganciclovir 2 mg/0.05mL intravitreal injection 1-2 doses biweekly for 10-14 days, followed by Valacyclovir 1g PO tid for 6 weeks
- 6.12. Cytomegalovirus (CMV) Disease
- 6.12.1. Treatment
- 6.12.1.1. CMV retinitis
- Induction therapy
- Preferred regimen (1): Ganciclovir 2mg OR Foscarnet  2.4mg intravitreal injections for 1-4 doses over a period of 7-10 days to achieve high intraocular concentration faster
- Preferred regimen (2): Valganciclovir 900 mg PO bid for 1421 days
- Alternative regimen (1): Ganciclovir 5 mg/kg IV q12h for 1421 days
- Alternative regimen (2): Foscarnet 90 mg/kg IV q12h or 60 mg/kg q8h for 1421 days
- Alternative regimen (3): Cidofovir 5 mg/kg/week IV for 2 weeks
- Note: Saline hydration before and after therapy should be given and Probenecid, 2 g PO 3 hours before dose, followed by 1 g PO 2 hours and 8 hours after the dose (total of 4 g) is recommended.
- Chronic maintenance (secondary prophylaxis):
- Preferred regimen: Valganciclovir 900 mg PO qd
- Alternative regimen (1): Ganciclovir 5 mg/kg IV 57 times weekly
- Alternative regimen (2): Foscarnet 90120 mg/kg IV once daily
- Alternative regimen (3): Cidofovir 5 mg/kg/week IV for 2 weeks; saline hydration before and after therapy AND Probenecid, 2 g PO 3 hours before dose, followed by 1 g PO 2 hours and 8 hours after the dose (total of 4 g)
- 6.12.1.2. CMV esophagitis or colitis
- 6.12.1.2.1. Severe condition
- Preferred regimen: Ganciclovir 5 mg/kg IV q12h; may switch to Valganciclovir 900 mg PO bid once the patient can tolerate oral therapy for 21-42 days or till the symptoms are resolved
- Alternative regimen: Foscarnet 90 mg/kg IV q12h or 60 mg/kg q8h for 21-42 days
- Note: For patients with treatment-limiting toxicities to Ganciclovir or with Ganciclovir resistance, above regimen is recommended.
- 6.12.1.2.2. Mild disease and able to tolerate oral therapy
- Preferred regimen: Valganciclovir 900 mg PO bid 21-42 days
- 6.12.1.3. CMV neurological disease
- Preferred regimen: Ganciclovir 5 mg/kg IV q12h AND (Foscarnet 90 mg/kg IV q12h or 60 mg/kg IV q8h) to stabilize disease
- 6.13. HHV-8 Diseases (kaposi sarcoma , primary effusion lymphoma , multicentric castlemans disease )
- 6.13.1. Treatment
- Mild to moderate KS (ACTG Stage T0)
- Note:  Initiate or optimize anti retroviral therapy.
- Advanced KS 
- Note: Chemotherapy (per oncology consult) AND anti retroviral therapy.
- Primary effusion lymphoma
- Preferred regimen (1): Valganciclovir 900 mg PO bid for 3 weeks
- Preferred regimen (2): Ganciclovir 5 mg/kg IV q12h for 3 weeks
- Preferred regimen (3): Valganciclovir 900 mg PO bid AND Zidovudine 600 mg PO qid for 7 21 days
- Alternative regimen: Rituximab (375 mg/m2 given weekly for 48 weeks) may be an alternative to or used adjunctively with antiviral therapy
- Note: Valganciclovir PO OR Ganciclovir IV can be used as adjunctive therapy
- 6.14. Human papillomavirus (HPV) infection
- 6.14.1. Prevention
- For females aged 1326 years
- Preferred regimen (1): HPV quadrivalent vaccine 0.5 mL IM at months 0, 12, and 6 OR HPV bivalent vaccine 0.5 mL IM at months 0, 12, and 6
- Males aged 1326 years
- Preferred regimen (1): HPV quadrivalent vaccine 0.5 mL IM at months 0, 12, and 6
- 6.14.2. Treatment
- 6.14.2.1. Patient-applied therapy for uncomplicated external warts that can be easily identified by patients
- Preferred regimen (1):  Podophyllotoxin (e.g., podofilox 0.5% solution or 0.5% gel)
- Note: Apply to all lesions bid for 3 consecutive days, followed by 4 days of no therapy, repeat weekly for up to 4 cycles, until lesions are no longer visible)
- Preferred regimen (2):  Imiquimod 5% cream
- Note: Apply to lesion at bedtime and remove in the morning on 3 nonconsecutive nights weekly for up to 16 weeks, until lesions are no longer visible. Each treatment should be washed with soap and water 610 hours after application.
- Preferred regimen (3): Sinecatechins 15% ointment
- Note: Apply to affected areas tid for up to 16 weeks, until warts are completely cleared and not visible
- 6.14.2.2. Provider-applied therapy for complex or multicentric lesions, or lesions inaccessible to patient
- Note (1): Cryotherapy (liquid nitrogen or cryoprobe): Apply until each lesion is thoroughly frozen. Repeat every 12 weeks for up to 4 weeks, until lesions are no longer visible. Some providers allow the lesion to thaw, then freeze a second time in each session.
- Note (2): Trichloroacetic acid or bichloroacetic acid cauterization: 80%90% aqueous solution, apply to wart only, allow to dry until a white frost develops. Repeat weekly for up to 6 weeks, until lesions are no longer visible.
- Note (3): Surgical excision or laser surgery to external or anal warts.
- Note (4): Podophyllin resin 10%25% in tincture of benzoin: Apply to all lesions (up to 10 cm2 ), then wash off a few hours later, repeat weekly for up to 6 weeks until lesions are no longer visible.
- 6.15. Hepatitis A virus (HAV) infection
- 6.15.1. Prevention
- Indication: HAV-susceptible patients with chronic liver disease, or who are injection-drug users or homosexuals
- Preferred regimen: Hepatitis A vaccine 1 mL IM  2 doses at 0 and 612 months.
- Alternative regimen: Combined HAV and HBV vaccine 1 mL IM as a 3-dose (0, 1, and 6 months) or 4-dose series (days 0, 7, 21 to 30, and 12 months).
- Note (1): For patients susceptible to both HAV and hepatitis B virus (HBV) infection, alternative regimen is recommended.
- Note (2): IgG antibody response should be assessed 1 month after vaccination; nonresponders should be revaccinated when CD4 count >200 cells/L.
- 6.16. Hepatitis B virus (HBV) infection
- 6.16.1. Prevention
- 6.16.1.1. Indication
- Patients without chronic HBV or without immunity to HBV (i.e., anti-HBs <10 international units/mL).
- Patients with isolated anti-HBc and negative HBV DNA.
- Early vaccination is recommended before CD4 count falls below 350 cells/L.
- However, in patients with low CD4 cell counts, vaccination should not be deferred until CD4 count reaches >350 cells/L, because some patients with CD4 counts <200 cells/L do respond to vaccination.
- Preferred regimen (1): HBV vaccine IM (Engerix-B 20 g/mL or Recombivax HB 10 g/mL), 0, 1, and 6 months
- Preferred regimen (2): HBV vaccine IM (Engerix-B 40 g/mL or Recombivax HB 20 g/mL) 0, 1, 2 and 6 months
- Preferred regimen (3): Combined HAV and HBV vaccine, 1 mL IM as a 3-dose (0, 1, and 6 months) or 4-dose series (days 0, 7, 21 to 30, and 12 months)
- Alternative regimen: Some experts recommend vaccinating with 40-g doses of either HBV vaccine
- Note:  Anti-HBs should be obtained 1 month after completion of the vaccine series. Patients with anti-HBs <10 international units/mL at 1 month are considered nonresponders.
- Vaccine Non-Responders:
- Preferred regimen (1): HBV vaccine IM (Engerix-B 40 g/mL or Recombivax HB 20 g/mL), 0, 1, 2 and 6 months.
- Note (1): Vaccination non-responders have anti-HBs <10 international units/mL 1 month after vaccination series.
- Note (2): For patients with low CD4 counts at time of first vaccine series, some experts might delay revaccination until after a sustained increase in CD4 count with anti retroviral therapy.
- 6.16.2. Treatment
- Preferred regimen: Tenofovir 300 mg PO qdAND Emtricitabine 200 mg PO qd OR Lamivudine 300 mg PO qd AND additional drug(s) for HIV
- Note: Anti retroviral therapy regimen should include 2 drugs that are active against both HBV and HIV.
- Alternative regimen: Peginterferon alfa-2a 180 g SQ once weekly for 48 weeks OR Peginterferon alfa 2b 1.5 g/kg SQ once weekly for 48 weeks.
- Note: For HBV treatment is indicated for patients with elevated ALT and HBV DNA >2,000 IU/mL significant liver fibrosis, advanced liver disease or cirrhosis, above regimen is indicated.
- 6.17. Penicilliosis marneffei
- 6.17.1. Prevention
- 6.17.1.1. Indication
- Patients with CD4 cell counts <100 cells/L who live or stay for a long period in rural areas in northern Thailand, Vietnam, or Southern China.
- Preferred regimen: Itraconazole 200 mg PO qd
- Alternative regimen: Fluconazole 400 mg PO once weekly
- 6.17.2. Treatment
- 6.17.2.1. For acute infection in severely ill patients
- Preferred regimen: Liposomal amphotericin B 35 mg/kg/day IV for 2 weeks, followed by Itraconazole 200 mg PO bid for 10 weeks, followed by chronic maintenance therapy
- Alternative regimen: Voriconazole 6 mg/kg IV q12h for 1 day, then 4 mg/kg IV q12h for at least 3 days, followed by 200 mg PO bid for a maximum of 12 weeks, followed by maintenance therapy
- 6.17.2.2. For mild disease
- Preferred regimen: Itraconazole 200 mg PO bid for 8 weeks; followed by chronic maintenance therapy
- Alternative regimen: Voriconazole 400 mg PO bid for 1 day, then 200 mg bid for a maximum of 12 weeks, followed by chronic maintenance therapy
- 6.17.2.3. Chronic Maintenance Therapy (Secondary Prophylaxis)
- Preferred regimen: Itraconazole 200 mg PO qd
- Note (1): Anti retroviral therapy should be initiated simultaneously with treatment for penicilliosis to improve treatment outcome.
- Note (2): Itraconazole and Voriconazole may have significant interactions with certain ARV agents. These interactions are complex and can be bi-directional.
- Note (3): Therapeutic drug monitoring and dosage adjustment may be necessary to ensure triazole antifungal and ARV efficacy and reduce concentration-related toxicities.
- 6.18. Isosporiasis
- 6.18.1. Treatment
- For Acute Infection:
- Preferred regimen (1): Trimethoprim/Sulfamethoxazole 160 mg/800 mg PO (or IV) qid for 10 days
- Preferred regimen (2): Trimethoprim/Sulfamethoxazole 160 mg/800 mg PO (or IV) bid for 710 days
- Alternative regimen (1): Pyrimethamine 5075 mg PO daily AND Leucovorin 1025 mg PO qd
- Alternative regimen (2):  Ciprofloxacin 500 mg PO bid for 7 days as a second line alternative
- Chronic Maintenance Therapy (Secondary Prophylaxis):
- Preferred regimen (1): In patients with CD4 count <200/L, Trimethoprim/sulfamethoxazole 160 mg/800 mg PO three times a week
- Alternative regimen (1): Trimethoprim/sulfamethoxazole 160 mg/800 mg PO qd or (320 mg/1600 mg) three times a week
- Alternative regimen (2): Pyrimethamine 25 mg PO qd AND Leucovorin 510 mg PO qd
- Alternative regimen (3): Ciprofloxacin 500 mg three times a week as a second-line alternative
- Note (1): Fluid and electrolyte management in patients with dehydration.
- Note (2): Immune reconstitution with anti retroviral therapy may result in fewer relapses.
- Note (3): IV therapy may be used for patients with potential or documented mal-absorption.
- 6.19. Chagas disease (American trypanosomiasis)
- 6.19.1. Treatment
- For acute, earlychronic, and reactivated Disease:
- Preferred regimen: Benznidazole 58 mg/kg/day PO in 2 divided doses for 3060 days
- Alternative regimen: Nifurtimox 810 mg/kg/day PO for 90120 days.
- 6.20. Leishmaniasis, visceral
- 6.20.1. Leishmaniasis, visceral
- 6.20.1.1. Treatment
- For initial infection:
- Preferred regimen (1): Liposomal amphotericin B 24 mg/kg IV qd
- Preferred regimen (2): Liposomal amphotericin B interrupted schedule (e.g., 4 mg/kg on days 15, 10, 17, 24, 31, 38)
- Alternative regimen (1): Amphotericin B deoxycholate 0.51.0 mg/kg IV q24h for total dose of 1.52.0 g
- Alternative regimen (2): Sodium stibogluconate (pentavalent antimony) 20 mg/kg IV or IM q24h for 28 days
- Alternative regimen (3): Miltefosine 100 mg PO qd for 4 weeks
- Chronic maintenance therapy (secondary prophylaxis); Especially in Patients with CD4 Count <200 cells/L:
- Preferred regimen (1): Liposomal amphotericin B 4 mg/kg every 24 weeks
- Preferred regimen (2): Amphotericin B lipid complex 3 mg/kg every 21 days
- Alternative regimen: Sodium stibogluconate 20 mg/kg IV or IM every 4 weeks
- 6.20.2. Leishmaniasis, cutaneous
- Preferred regimen (1): Liposomal amphotericin B 24 mg/kg IV daily for 10 days
- Preferred regimen (2): Liposomal amphotericin B interrupted schedule (e.g., 4 mg/kg on days 15, 10, 17, 24, 31, 38) to achieve total dose of 2060 mg/kg
- Preferred regimen (3): Sodium stibogluconate 20 mg/kg IV or IM daily for 34 weeks
- 6.21. Aspergillosis, invasive
- 6.21.1. Treatment
- Preferred regimen: Voriconazole 6 mg/kg IV q12h for 1 day, then 4 mg/kg IV q12h, followed by Voriconazole 200 mg PO q12h after clinical improvement until CD4 cell count >200 cells/L and the infection appears to be resolved.
- Alternative regimen (1): Lipid formulation of Amphotericin B 5 mg/kg IV q24h
- Alternative regimen (2): Amphotericin B deoxycholate 1mg/kg IV q24h
- Alternative regimen (3): Caspofungin 70 mg IV single dose, then 50 mg IV q24h
- Alternative regimen (4): Micafungin 100150 mg IV q24h
- Alternative regimen (5): Anidulafungin 200 mg IV single dose, then 100 mg IV q24h
- Alternative regimen (6): Posaconazole 200 mg PO qid, then, after condition improved, 400 mg PO bid
- 6.22. Malaria
- 6.22.1. Prevetion
- 6.22.1.1. Prophylaxis in all areas
- Preferred regimen (1): Atovaquone 250 mg  and Proguanil hydrochloride 100 mg PO qd
- Pediatric doses: Pediatric tablets contain 62.5 mg atovaquone and 25 mg proguanil hydrochloride
- 58 kg: 1/2 pediatric tablet daily
- >810 kg: 3/4 pediatric tablet daily
- >1020 kg: 1 pediatric tablet daily
- >2030 kg: 2 pediatric tablets daily
- >3040 kg: 3 pediatric tablets daily
- Note (1): Begin 12 days before travel to malarious areas. Take daily at the same time each day while in the malarious area and for 7 days after leaving such areas. Contraindicated in people with severe renal impairment (creatinine clearance <30 mL/min).
- Note (2):  Atovaquone-proguanil should be taken with food or a milky drink. Not recommended for prophylaxis for children weighing <5 kg, pregnant women, and women breastfeeding infants weighing <5 kg. Partial tablet doses may need to be prepared by a pharmacist and dispensed in individual capsules.
- Preferred regimen (2): Doxycycline 100 mg PO qd
- Pediatric dose: 8 years of age: 2.2 mg/kg up to adult dose of 100 mg/day
- Note: Begin 12 days before travel to malarious areas. Take daily at the same time each day while in the malarious area and for 4 weeks after leaving such areas. Contraindicated in children <8 years of age and pregnant women.
- 6.22.1.2. Prophylaxis only in areas with chloroquine-sensitive malaria
- Preferred regimen: Chloroquine phosphate 300 mg base (500 mg salt) PO once a week
- Note: Begin 12 weeks before travel to malarious areas. Take weekly on the same day of the week while in the malarious area and for 4 weeks after leaving such areas. May exacerbate psoriasis.
- Alternative regimen: Hydroxychloroquine sulfate 400 mg salt PO once a week
- Note: Begin 12 weeks before travel to malarious areas. Take weekly on the same day of the week while in the malarious area and for 4 weeks after leaving such areas.
- Pediatric doses: Chloroquine phosphate 5 mg/kg base (8.3 mg/kg salt) orally, once/week, up to maximum adult dose of 300 mg base; Hydroxychloroquine sulfate 5 mg/kg base (6.5 mg/kg salt) orally, once/week, up to a maximum adult dose of 310 mg base
- 6.22.1.3. Prophylaxis in areas with mefloquine-sensitive malaria
- Preferred regimen: Mefloquine 250 mg PO once a week
- Note (1): Begin 2 weeks before travel to malarious areas. Take weekly on the same day of the week while in the malarious area and for 4 weeks after leaving such areas. Contraindicated in people allergic to mefloquine or related compounds (quinine, quinidine) and in people with active depression, a recent history of depression, generalized anxiety disorder, psychosis, schizophrenia, other major psychiatric disorders, or seizures.
- Note (2): Use with caution in persons with psychiatric disturbances or a previous history of depression. Not recommended for persons with cardiac conduction abnormalities.
- Pediatric dose: Mefloquine 9 kg: 4.6 mg/kg base (5 mg/kg salt) orally, once/week
- >919 kg: 1/4 tablet once/week
- >1930 kg: 1/2 tablet once/week
- >3045 kg: 3/4 tablet once/week
- >3045 kg: 3/4 tablet once/week
- 6.22.1.4. Prophylaxis for short-duration travel to areas with principally Plasmodium vivax
- Preferred regimen: Primaquine 52.6 mg PO qd
- Note: Begin 12 days before travel to malarious areas. Take daily at the same time each day while in the malarious area and for 7 days after leaving such areas. Contraindicated in people with G6PD deficiency. Also contraindicated during pregnancy and lactation, unless the infant being breastfed has a documented normal G6PD level.
- Pediatric dose: Primaquine 0.5 mg/kg base (0.8 mg/kg salt) up to adult dose orally, daily
- 6.22.1.5. Terminal prophylaxis to decrease the risk for relapses of Plasmodium vivax and Plasmodium ovale
- Preferred regimen: Primaquine 52.6 mg PO qd  for 14 days after departure from the malarious area
- Note: Indicated for people who have had prolonged exposure to P. vivax, P. ovale, or both. Contraindicated in people with G6PD deficiency. Also contraindicated during pregnancy and lactation, unless the infant being breastfed has a documented normal G6PD level.
- Pediatric dose: Primaquine 0.5 mg/kg base (0.8 mg/kg salt) up to adult dose orally, daily for 14 days after departure from the malarious area
- 6.22.2. Treatment
- Note (1): Patients coinfected with HIV  should avoid Artesunate AND Sulfadoxine-Pyrimethamine if they are also receiving Co-trimoxazole, and avoid Artesunate AND Amodiaquine  if they are also receiving Efavirenz OR Zidovudine.
- Note (2):   Because Plasmodium falciparum malaria can progress within hours from mild symptoms or low-grade fever to severe disease or death, all HIV-infected patients with confirmed or suspected P.  falciparum infection should be hospitalized for evaluation, initiation of treatment, and observation.
- 6.22.2.1. Plasmodium falciparum
- 6.22.2.1.1. Treatment of uncomplicated Plasmodium falciparum malaria
- 6.22.2.1.1.1. Treat children and adults with uncomplicated Plasmodium falciparum malaria (except pregnant women in their first trimester) with one of the following recommended ACT (artemisinin-based combination therapy)
- Preferred regimen (1): Artemether 524 mg/kg/day PO bid AND Lumefantrine 29144 mg/kg/day PO bid for 3 days
- Note: The first two doses should, ideally, be given 8 hours apart.
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 15- Artemether 20 mg PO bid AND Lumefantrine 120 mg PO bid  for 3 days
- Body weight (kg)-15 to < 25- Artemether 40 mg PO bid AND Lumefantrine 240 mg PO bid  for 3 days
- Body weight (kg)-25 to < 35- Artemether 60 mg PO bid AND Lumefantrine 360 mg PO bid  for 3 days
- Body weight (kg)    35- Artemether 80 mg PO bid AND Lumefantrine 480 mg PO bid  for 3 days
- Preferred regimen (2): Artesunate 210 mg/kg/day PO qd AND Amodiaquine 7.515 mg/kg/day PO qd for 3 days
- Note: A total therapeutic dose range of 630 mg/kg/day Artesunate and 22.545 mg/kg/day per dose Amodiaquine is recommended.
- Dosage regimen based on body weight (kg)
- Body weight (kg)-4.5 to < 9- Artesunate 25 mg PO qd AND Amodiaquine 67.5 mg PO qd  for 3 days
- Body weight (kg)-9 to < 18 - Artesunate 50 mg PO qd AND Amodiaquine 135 mg PO qd for 3 days
- Body weight (kg)-18 to < 36- Artesunate 100 mg PO qd AND Amodiaquine 270 mg PO qd for 3 days
- Body weight (kg)    36 - Artesunate 200 mg PO qd AND Amodiaquine 540 mg PO qd for 3 days
- Preferred regimen (3): Artesunate 210 mg/kg/day PO qd AND Mefloquine 210 mg/kg/day PO qd for 3 days
- Dosage regimen based on body weight (kg)
- Body weight (kg)-5 to < 9- Artesunate 25 mg PO qd AND Mefloquine 55 mg PO qd  for 3 days
- Body weight (kg)-9to < 18- Artesunate 50 mg PO qd AND Mefloquine 110 mg PO qd for 3 days
- Body weight (kg)-18 to < 36- Artesunate 100 mg PO qd AND Mefloquine 220 mg PO qd for 3 days
- Body weight (kg)-  36  - Artesunate 200 mg PO qd AND Mefloquine 440 mg PO qd for 3 days
- Preferred regimen (4): Artesunate 210 mg/kg/day PO qd for 3 days AND Sulfadoxine-Pyrimethamine  1.25 (2570 / 1.253.5) mg/kg/day  PO given as a single dose on day 1
- Dosage regimen based on body weight (kg)
- Body weight (kg)- 5 to < 10- Artesunate 25 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 250/12 mg PO given as a single dose on day 1
- Body weight (kg)- 10 to < 25- Artesunate 50 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 500/25 mg PO given as a single dose on day 1
- Body weight (kg)- 25 to < 50- Artesunate 100 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 1000/50 mg PO given as a single dose on day 1
- Body weight (kg)- 50- Artesunate 200 mg PO qd for 3 days AND Sulfadoxine-Pyrimethamine 1500/75 mg PO given as a single dose on day 1
- Preferred regimen (5): Dihydroartemisinin 210 mg/kg/day PO qd AND Piperaquine1627 mg/kg/day PO qd for 3 days
- Dosage regimen based on Body weight (kg)
- Body weight (kg)-5 to < 8: Dihydroartemisinin 20 mg PO qd AND Piperaquine 160 mg PO qd for 3 days
- Body weight (kg)-8 to < 11: Dihydroartemisinin 30 mg PO qd AND Piperaquine 240 mg PO qd for 3 days
- Body weight (kg)-11 to < 17: Dihydroartemisinin 40 mg PO qd AND Piperaquine 320 mg PO qd for 3 days
- Body weight (kg)-17 to < 25: Dihydroartemisinin 60 mg PO qd AND  Piperaquine 480 mg PO qd for 3 days
- Body weight (kg)-25 to < 36: Dihydroartemisinin 80 mg PO qd AND  Piperaquine 640 mg PO qd for 3 days
- Body weight (kg)-36 to < 60: Dihydroartemisinin 120 mg PO qd AND  Piperaquine 960 mg PO qd for 3 days
- Body weight (kg)-60 < 80: Dihydroartemisinin 160 mg PO qd AND  Piperaquine 1280 mg PO qd for 3 days
- Body weight (kg)- >80: Dose of Dihydroartemisinin 200 mg PO qd AND  Piperaquine 1600 mg PO qd for 3 days
- 6.22.2.1.1.2 Reducing the transmissibility of treated Plasmodium falciparum infections In low-transmission areas in  patients with Plasmodium falciparum malaria (except pregnant women, infants aged < 6 months and women breastfeeding infants aged < 6 months)
- Preferred regimen: Primaquine 0.25 mg/kg PO single dose with ACT
- 6.22.2.1.2. Recurrent falciparum malaria
- 6.22.2.1.2.1. Failure within 28 days
- Note: The recommended second-line treatment is an alternative ACT known to be effective in the region. Adherence to 7-day treatment regimens with Artesunate or Quinine both of which should be co-administered with Tetracycline, or Doxycycline or Clindamycin) is likely to be poor if treatment is not directly observed; these regimens are no longer generally recommended.
- 6.22.2.1.2.2. Failure after 28 days
- Note: All presumed treatment failures after 4 weeks of initial treatment should, from an operational standpoint, be considered new infections and be treated with the first-line ACT. However, reuse of Mefloquine within 60 days of first treatment is associated with an increased risk for neuropsychiatric reactions, and an alternative ACT should be used.
- 6.22.2.1.3. Reducing the transmissibility of treated Plasmodium falciparum infections in low-transmission areas in  patients with Plasmodium falciparum malaria (except pregnant women, infants aged < 6 months and women breastfeeding infants aged < 6 months)
- Note: Single dose of 0.25 mg/kg biweekly Primaquine with ACT
- 6.22.2.1.4. Treating uncomplicated Plasmodium falciparum malaria in special risk groups
- 6.22.2.1.4.1. Pregnancy
- First trimester of pregnancy : Quinine AND Clindamycin 10 mg/kg/day PO bid for 7 days
- Second and third trimesters : Mefloquine is considered safe for the treatment of malaria during the second and third trimesters; however, it should be given only in combination with an artemisinin derivative.
- Note (1): Quinine is associated with an increased risk for hypoglycaemia in late pregnancy, and it should be used (with clindamycin) only if effective alternatives are not available.
- Note (2): Primaquine and Tetracyclines should not be used in pregnancy.
- 6.22.2.1.4.2. Infants less than 5kg body weight
- Note: They should be treated with an ACT at the same mg/kg bw target dose as for children weighing 5 kg.
- 6.22.2.1.4.4. Large and obese adults
- Note: For obese patients, less drug is often distributed to fat than to other tissues; therefore, they should be dosed on the basis of an estimate of lean body weight, ideal body weight. Patients who are heavy but not obese require the same mg/kg bw doses as lighter patients.
- 6.22.2.1.4.5. Non-immune travellers
- Note: Treat travellers with uncomplicated P. falciparum malaria returning to nonendemic settings with an ACT.
- 6.22.2.1.4.6. Uncomplicated hyperparasitaemia
- Note: People with P. falciparum hyperparasitaemia are at increased risk of treatment failure, severe malaria and death so should be closely monitored, in addition to receiving an ACT.
- 6.22.2.2. Treatment of uncomplicated malaria caused by Plasmodium vivax, Plasmodium ovale, Plasmodium malariae or Plasmodium knowlesi
- 6.22.2.2.1.  Blood Stage infection
- 6.22.2.2.1.1.  Uncomplicated malaria caused by Plasmodium vivax
- 6.22.2.2.1.1.1. In areas with chloroquine-sensitive Plasmodium vivax
- Preferred regimen: Chloroquine total dose of 25 mg/kg PO. Chloroquine is given at an initial dose of 10 mg/kg, followed by 10 mg/kg on the second day and 5 mg/kg on the third day PO
- 6.22.2.2.1.1.2. In areas with chloroquine-resistant Plasmodium vivax
- Note: ACTs containing Piperaquine, Mefloquine OR Lumefantrine are the recommended treatment, although Artesunate AND Amodiaquine may also be effective in some areas. In the systematic review of ACTs for treating P. vivax malaria, Dihydroartemisinin AND Piperaquine provided a longer prophylactic effect than ACTs with shorter half-lives (Artemether ANDLumefantrine) OR (Artesunate AND Amodiaquine), with significantly fewer recurrent parasitaemias during 9 weeks of follow-up.
- 6.22.2.2.1.2. Uncomplicated malaria caused by Plasmodium ovale, Plasmodium malariae or Plasmodium knowlesi malaria
- Note: Resistance of P. ovale, P. malariae and P. knowlesi to antimalarial drugs is not well characterized, and infections caused by these three species are generally considered to be sensitive to Chloroquine. In only one study, conducted in Indonesia, was resistance to Chloroquine reported in P. malariae. The blood stages of P. ovale, P. malariae and P. knowlesi should therefore be treated with the standard regimen of ACT or Chloroquine, as for vivax malaria.
- 6.22.2.2.1.3. Mixed malaria infections
- Note: ACTs are effective against all malaria species and so are the treatment of choice for mixed infections.
- 6.22.2.2.2. Liver stages (hypnozoites) of Plasmodium vivax and Plasmodium ovale
- Note: To prevent relapse, treat P. vivax or P. ovale malaria in children and adults (except pregnant women, infants aged < 6 months, women breastfeeding infants < 6 months, women breastfeeding older infants unless they are known not to be G6PD deficient and people with G6PD deficiency) with a 14-day course of Primaquine in all transmission settings. Strong recommendation, high-quality evidence In people with G6PD deficiency, consider preventing relapse by giving primaquine base at 0.75 mg base/kg bw once a week for 8 weeks, with close medical supervision for potential primaquine-induced adverse haematological effects.
- 6.22.2.2.2.1. Primaquine for preventive relapse
- Preferred regimen: Primaquine 0.250.5 mg/kg/day PO qd for 14 days
- 6.22.2.2.2.2. Primaquine and glucose-6-phosphate dehydrogenase deficiency
- Preferred regimen: Primaquine 0.75 mg base/kg/day PO once a week for 8 weeks
- Note: The decision to give or withhold Primaquine should depend on the possibility of giving the treatment under close medical supervision, with ready access to health facilities with blood transfusion services.
- 6.22.2.2.2.3. Prevention of relapse in pregnant or lacating women and infants
- Note: Primaquine is contraindicated in pregnant women, infants < 6 months of age and in lactating women (unless the infant is known not to be G6PD deficient)
- 6.22.2.3. Treatment of severe malaria
- 6.22.2.3.1. Treatment of severe falciparum infection with Artesunate
- 6.22.2.3.1.1. Adults and children with severe malaria (including infants, pregnant women in all trimesters and lactating women)
- Preferred regimen: Artesunate IV/IM for at least 24 h and until they can tolerate oral medication. Once a patient has received at least 24 h of parenteral therapy and can tolerate oral therapy, complete treatment with 3 days of an ACT (add single dose Primaquine in areas of low transmission).
- 6.22.2.3.1.2. Young children weighing < 20 kg
- Preferred regimen:Artesunate 3 mg/kg per dose IV/IM q24h
- Alternative regimen: use Artemether in preference to quinine for treating children and adults with severe malaria
- 6.22.2.3.2.Treating cases of suspected severe malaria pending transfer to a higher-level facility (pre-referral treatment)
- 6.22.2.3.2.1. Adults and children
- Preferred regimen: Artesunate IM q24h
- Alternative regimen: Artemether IM OR Quinine IM
- 6.22.2.3.2.2.  Children < 6 years
- Preferred regimen: Where intramuscular injections of artesunate are not available, treat with a single rectal dose (10 mg/kg) of Artesunate, and refer immediately to an appropriate facility for further care.
- Note: Do not use rectal artesunate in older children and adults.
- 6.22.2.3.3. Pregancy
- Note: Parenteral artesunate is the treatment of choice in all trimesters. Treatment must not be delayed.
- 6.22.2.3.4. Treatment of severe Plasmodium Vivax infection
- Note: Parenteral Artesunate, treatment can be completed with a full treatment course of oral ACT or Chloroquine (in countries where Chloroquine is the treatment of choice). A full course of radical treatment with Primaquine should be given after recovery.
- 6.22.2.3.5. Additional aspects of management in severe malaria
- Fluid therapy:  It is not possible to give general recommendations on fluid replacement; each patient must be assessed individually and fluid resuscitation based on the estimated deficit.
- Blood Transfusion: In high-transmission settings, blood transfusion is generally recommended for children with a haemoglobin level of < 5 g/100 mL(haematocrit < 15%). In low-transmission settings, a threshold of 20% (haemoglobin,7 g/100 mL) is recommended.
- Exchange blood transfusion: Exchange blood transfusion requires intensive nursing care and a relatively large volume of blood, and it carries significant risks. There is no consensus on the indications, benefits and dangers involved or on practical details such as the volume of blood that should be exchanged. It is, therefore, not possible to make any recommendation regarding the use of exchange blood transfusion.
- 6.23. Cryptococcosis
- 6.23.1. Treatment
- 6.23.1.1. Cryptococcal meningitis
- 6.23.1.1.1. Induction therapy
- Preferred regimen: Liposomal amphotericin B 34 mg/kg IV q24h AND Flucytosine 25 mg/kg PO qid for at least 2 weeks, followed by consolidation therapy
- Alternative regimen (1):  Amphotericin B deoxycholate 0.7 mg/kg IV q24h AND Flucytosine 25 mg/kg PO qid
- Alternative regimen (2): Amphotericin B lipid complex 5 mg/kg IV q24h AND Flucytosine 25 mg/kg PO qid
- Alternative regimen (3): Liposomal Amphotericin B 3-4 mg/kg IV q24h AND Fluconazole 800 mg PO or IV q24h
- Alternative regimen (4): Amphotericin B deoxycholate 0.7 mg/kg IV q24h AND Fluconazole 800 mg PO or IV q24h
- Alternative regimen (5): Fluconazole 400800 mg PO or IV qd AND Flucytosine 25 mg/kg PO qid
- Alternative regimen (6): Fluconazole 1200 mg PO or IV qd
- 6.23.1.1.2. Consolidation therapy
- Preferred regimen: Fluconazole 400 mg PO (or IV) qd for atleast 8 weeks
- Note: Preferred therapy followed by maintenance therapy.
- Maintenance therapy:  Fluconazole 200 mg PO qd for at least 12 months
- Alternative regimen:  Itraconazole 200 mg PO bid for 8 weeks
- 6.23.1.2. Non-CNS cryptococcosis with mild-to-moderate symptoms and focal pulmonary infiltrates
- Preferred regimen: Fluconazole, 400 mg PO qd for 12 months
- Note: Patients receiving Flucytosine should have either blood levels monitored (peak level 2 hours after dose should be 3080 mcg/mL) or close monitoring of blood counts for development of cytopenia. Dosage should be adjusted in patients with renal insufficiency.
- 6.24. Mucocutaneous candidiasis
- 6.24.1. Treatment
- 6.24.1.1. For oropharyngeal candidiasis
- Oral Therapy
- Preferred regimen: Fluconazole 100 mg PO qd for 7-14 days.
- Alternative regimen:  Itraconazole oral solution 200 mg PO qd for 7-14 days OR Posaconazole oral suspension 400 mg PO bid for 1 day, then 400 mg qd 7-14 days
- Topical therapy
- Preferred regimen: Clotrimazole troches, 10 mg PO 5 times daily OR Miconazole mucoadhesive buccal 50-mg tablet
- Note: Apply to mucosal surface over the canine fossa once daily (do not swallow, chew, or crush).
- Alternative regimen: Nystatin suspension 46 mL qid or 12 flavored pastilles 4 5 times daily
- 6.24.1.2. For esophageal candidiasis
- Preferred regimen: Fluconazole 100 mg (up to 400 mg) PO or IV qd for 14-21 days OR  Itraconazole oral solution 200 mg PO qd for 14-21 days
- Alternative regimen (1): Voriconazole 200 mg PO or IV bid for 14-21 days
- Alternative regimen (2): Anidulafungin 100 mg IV single dose, then 50 mg IV qd for 14-21 days
- Alternative regimen (3): Caspofungin 50 mg IV qd for 14-21 days
- Alternative regimen (4): Micafungin 150 mg IV qd for 14-21 days
- Alternative regimen (5): Amphotericin B deoxycholate 0.6 mg/kg IV qd for 14-21 days
- Alternative regimen (6): Lipid formulation of amphotericin B 34 mg/kg IV qd for 14-21 days
- 6.24.1.3. For uncomplicated vulvo-vaginal candidiasis
- Preferred regimen:  Oral Fluconazole 150 mg for 1 dose OR Topical azoles (Clotrimazole, Butoconazole, Miconazole, Tioconazole, or Terconazole) for 3 7 days
- Alternative regimen:  Itraconazole oral solution 200 mg PO qd for 37 days
- 6.24.1.4. For severe or recurrent vulvovaginal candidiasis
- Preferred regimen: Fluconazole 100200 mg PO qd for 7 days OR Topical antifungal 7 days
- 6.25. Bartonellosis
- 6.25.1. Treatment
- 6.25.1.1. For bacillary angiomatosis, peliosis hepatis, bacteremia, and osteomyelitis
- Preferred regimen (1): Doxycycline 100 mg PO or IV q12h for 3 months
- Preferred regimen (2): Erythromycin 500 mg PO or IV q6h for 3 months
- Alternative regimen (1):  Azithromycin 500 mg PO qd
- Alternative regimen (2):} Clarithromycin 500 mg PO bid
- 6.25.1.2. Confirmed bartonella endocarditis
- Preferred regimen: Doxycycline 100 mg IV q12h AND Gentamicin 1 mg/kg IV q8h) for 2 weeks, then continue with Doxycycline 100 mg IV or PO q12h
- Altered regimen: Doxycycline 100 mg IV AND Rifabutin 300 mg PO or IV q12h for 2 weeks, then continue with Doxycycline 100 mg IV or PI q12h
- 6.25.1.3. CNS infections
- Preferred regimen: (Doxycycline 100 mg with or without Rifabutin 300 mg PO or IV q12h
- 6.25.1.4. Other severe infections
- Preferred regimen (1): Doxycycline 100 mg PO or IV with or without Rifabutin 300 mg PO or IV) q12h for 3 months
- Preferred regimen (2): Erythromycin 500 mg PO or IV q6h) with or without Rifabutin) 300 mg PO or IV q12h for 3 months.
- Note: If relapse occurs after initial (>3 month) course of therapy, longterm suppression with Doxycycline or a macrolide is recommended as long as CD4 count <200 cells/L.
- 6.26. Campylobacteriosis
- 6.26.1. Treatment
- 6.26.1.1. For mild-to-moderate disease (If Susceptible)
- Preferred regimen: Ciprofloxacin 500750 mg PO or 400 mg IV q12h OR Azithromycin 500 mg PO qd
- Alternative regimen: Levofloxacin 750 mg PO or IV q24h OR  Moxifloxacin 400 mg (PO or IV) q24h
- 6.26.1.2. For campylobacter bacteremia
- Preferred regimen: Ciprofloxacin 500750 mg PO or 400 mg IV q12h AND an aminoglycoside.
- Duration of Therapy:
- Gastroenteritis: 710 days (5 days with Azithromycin)
- Bacteremia: 14 days
- Recurrent bacteremia: 26 weeks.
- 6.27. Shigellosis
- 6.27.1. Treatment
- Preferred regimen: Ciprofloxacin 500750 mg PO or 400 mg IV q12h
- Duration of Therapy:
- Gastroenteritis: 710 days
- Bacteremia: 14 days
- Recurrent Infections: 26 weeks
- Alternative regimen (1): Levofloxacin 750 mg PO or IV q24h for 5 days
- Alternative regimen (2): Moxifloxacin 400 mg PO or IV q24h for 5 days
- Alternative regimen (3): Trimethoprim/Sulfamethoxazole 160 mg/800 mg PO or IV q12h for 5 days
- Alternative regimen (4): Azithromycin 500 mg PO qd for 5 days
- Note: Antimotility agents should be avoided.
- 6.28. Salmonellosis
- 6.28.1. Treatment
- Preferred regimen: Ciprofloxacin 500750 mg PO or 400 mg IV q12h
- Alternative regimen (1): Levofloxacin 750 mg PO or IV q24h
- Alternative regimen (2): Moxifloxacin 400 mg PO or IV q24h
- Alternative regimen (3): Trimethoprim/Sulfamethoxazole 160 mg/800 mg PO or IV q12h
- Alternative regimen (4): Cefotaxime 1 g IV q8h
- Alternative regimen (5): Ceftriaxone 1 g IV q24h
- Duration of therapy:
- For gastroenteritis without bacteremia:
- If CD4 count 200 cells/L: 714 days.
- If CD4 count <200 cells/L: 26 weeks.
- For gastroenteritis with bacteremia:
- If CD4 count 200/L: 14 days; longer duration if bacteremia persists or if the infection is complicated (e.g., if metastatic foci of infection are present)
- If CD4 count <200 cells/L: 26 weeks
- Note (1): The role of long-term secondary prophylaxis in patients with recurrent Salmonella bacteremia is not well established. Must weigh benefit against risks of long-term antibiotic exposure.
- Note (2): Secondary Prophylaxis Should Be Considered For:
- Patients with recurrent Salmonella gastroenteritis +/- bacteremia.
- Patients with CD4 <200 cells/L with severe diarrhea.
- 6.29. Bacterial enteric infections
- 6.29.1. Empiric therapy
- Preferred regimen: Ciprofloxacin 500750 mg PO or 400 mg IV q12h
- Alternative regimen:  Ceftriaxone 1 g IV q24h OR  Cefotaxime 1 g IV q8h
- Note: Antimotility agents should be avoided if there is concern about inflammatory diarrhea, including Clostridium-difficile-associated diarrhea.
- 6.30.Bacterial respiratory diseases
- 6.30.1. Treatment
- 6.30.1.1. Empiric outpatient therapy
- Preferred regimen: Amoxicillin 500 mg PO  AND (Azithromycin 500 mg PO OR Clarithromycin 500 mg PO) qd for 7-10 days
- Alternative regimen: Amoxicillin 500 mg PO AND Doxycycline 100mg PO qd
- Note: Therapy should be adjusted based on the results of diagnostic workup.
- 6.30.1.2. For penicillin-allergic patients
- Preferred regimen: Ceftriaxone 1 g IV q24h AND (Azithromycin 500 mg PO OR Clarithromycin 500 mg PO) qd for 7-10 days
- Alternative regimen: Aztreonam 1 g IV q24h AND Levofloxacin 750 mg IV q24h OR Moxifloxacin 400 mg IV q24h
- 6.30.1.3. Empiric therapy for non-ICU hospitalized patients
- Preferred regimen: Ceftriaxone 1 g IV q24h AND (Azithromycin 500 mg PO OR Clarithromycin 500 mg PO) qd
- 6.30.1.3. Empiric therapy for patients at risk of pseudomonas pneumonia
- Preferred regimen: : Piperacillin-Tazobactam 2 g-0.25 g IV q24h AND (Ciprofloxacin 400 mg IV q812h OR Levofloxacin 750 mg IV) q24h
- 6.30.1.4. Empiric therapy for patients at risk for methicillin-resistant staphylococcus aureus pneumonia
- Preferred regimen: Amoxicillin 500 mg PO AND (Azithromycin 500 mg PO OR Clarithromycin 500 mg) PO AND Linezolid 600 mg (IV or PO).
- Note (1): Empiric therapy with a macrolide alone is not routinely recommended, because of increasing pneumococcal resistance.
- Note (2): Chemoprophylaxis can be considered for patients with frequent recurrences of serious bacterial pneumonia.
- 6.31. Cryptosporidiosis
- 6.31.1. Treatment
- Note (1): Initiate or optimize ART for immune restoration to CD4 count >100 cells/L. Aggressive oral or IV rehydration and replacement of electrolyte loss and symptomatic treatment of diarrhea with anti-motility agents.
- Preferred regimen (1): Nitazoxanide 5001000 mg PO bid for 14 days
- Preferred regimen (2): Paromomycin 500 mg PO qid for 1421 days
- Note (2): With optimized anti retroviral therapy, symptomatic treatment and rehydration and electrolyte replacement is recommended. Tincture of opium may be more effective than Loperamide in management of diarrhea.
- 6.32. Microsporidiosis
- 6.32.1. Treatment
- 6.32.1.1. For GI infections caused by enterocytozoon bienuesi
- Note: Initiate or optimize anti retroviral therapy as immune restoration to CD4 count >100 cells/L AND manage severe dehydration, malnutrition, and wasting by fluid support.
- Preferred therapy (1): Fumagillin 60 mg/day  PO bid
- Preferred therapy (2): TNP-470 PO bid
- Preferred therapy (3): Nitazoxanide 1000 mg PO bid
- 6.32.1.2. For intestinal and disseminated (not ocular) infections caused by microsporidia other than E. bienuesi and vittaforma corneae
- Preferred regimen: Albendazole 400 mg PO bid, continue until CD4 count >200 cells/L for >6 months after initiation of anti retroviral therapy
- Alternative regimen: Itraconazole 400 mg PO qd AND Albendazole 400 mg PO bid
- 6.32.1.3. For ocular infection
- Preferred regimen: Topical fumagillin bicylohexylammonium (Fumidil B) eye drops: 3 mg/mL in saline (fumagillin 70 g/mL)2 drops q2h for 4 days, then 2 drops qid AND Albendazole 400 mg PO bid, for management of systemic infection
- Note: Therapy should be continued until resolution of ocular symptoms and CD4 count increase to >200 cells/L for >6 months in response to anti retroviral therapy.
- 6.33. Progressive Multifocal Leukoencephalopathy (PML)
- Note (1): There is no specific antiviral therapy for JC virus infection. The main treatment approach is to reverse the immunosuppression caused by HIV.
- Note (2): Initiate anti retroviral therapy immediately in anti retroviral therapy naive patients.
- Note (3): Optimize anti retroviral therapy in patients who develop PML in phase of HIV viremia on anti retroviral therapy.
- Note (4): Corticosteroids may be used for PML-IRIS characterized by contrast enhancement, edema or mass effect, and with clinical deterioration.