Please select the eligibility criteria that correspond to the clinical trial below.
Title: Improving Adherence to HAART Using Mobile Phone Text Messages
Brief Summary: The investigators hypothesize that sending weekly motivational text messages to people infected with HIV will encourage them to take their medication, compared to usual care.


Options:
A: Inclusion Criteria:

* On HAART for at least 1 month
* 21 years or more
* Owns a mobile phone
* Can read text messages

Exclusion Criteria:

* On HAART for less than 1 month
* Aged less than 21 years
B: Inclusion Criteria:

* More than 18 years or emancipated minor
* Has access to mobile phone
* Self-identifying female sex worker
* Willing to receive study SMS messages
* HIV-positive (any WHO stage or CD4)
* Able to read or have someone else read
* ART naïve
* Informed consent obtained and signed.

Exclusion Criteria:

* Plans to move away in next 6 months
* Contraindication to ART
C: Inclusion Criteria:

1. Be 18 years or older
2. Be known or presumed to be HIV-uninfected at baseline
3. Be initiated on PEP by a healthcare provider in the past six days for a sexual exposure to a known or suspected HIV-infected source
4. STAGE 1 only: Own a mobile phone with text messaging capabilities on which they are willing to potentially receive messages from the text messaging service
5. Be capable of communicating verbally and via text in English
6. Be planning to continue their follow-up locally or be willing to have follow-up study visits conducted remotely; either by telephone or via an encrypted video conferencing system (such as Zoom for healthcare).
7. Be referred to a sexual assault center and provided with necessary counselling and support services if presented for nPEP following sexual assault.

Exclusion Criteria:

1. Creatinine clearance \<30 mL/min (using Cockcroft-Gault formula)
2. Enrolled in any other clinical trial of an HIV prevention intervention
3. Prior participation in this clinical trial for a previous episode of nPEP
4. Known co-infection with chronic hepatitis B at enrollment
5. Current or planned pregnancy or breastfeeding
6. Use of a medication whose co-administration with Biktarvy is contraindicated (dofetilide, carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifampin, rifampicin, rifabutin, rifapentine, modafinil, dexamethasone, metformin, St. John's Wort)
7. Concomitant use of HIV pre-exposure prophylaxis (PrEP)
8. Stage 2 only: Concomitant use of any non-prescription medication, supplement, vitamin or natural remedy which the patient is unwilling to discontinue during Biktarvy® administration
D: Inclusion Criteria:

* Man or transgender M to F who has sex with men.
* Age 18 years or older.
* Subjects must have substantial ongoing risk of acquisition of HIV as evident by one or more of the following:

  * Has at least one HIV infected sexual partner for ≥4 weeks.
  * No condom use during anal intercourse with ≥3 male sex partners who are HIV-positive or of unknown HIV status during the last 3 months.
  * No condom use during anal sex with ≥1 male partner and STI diagnosis during the last 3 months.
* Negative for HIV infection by rapid HIV test and confirmed negative by NAT or other sensitive method such as antibody- antigen test.
* Acceptable laboratory values in the past 30 days:

  * Calculated creatinine clearance of at least 60 mL/min by the Cockcroft-Gault formula (eCcr (male) in mL/min = \[(140 - age in years) x (lean body weight in kg)\] / (72 x serum creatinine in mg/dL)
  * Alanine aminotransferase (ALT) and/ or aspartate aminotransferase (AST) \< 3 x upper limit of normal (ULN)
  * Hemoglobin \> 9 g/dL
  * Absolute neutrophil count \> 750/ mm3
  * Platelets \> 75,000/ mm3

Exclusion Criteria:

* Unable to give informed consent.
* Active hepatitis B (positive hepatitis B surface antigen (HBSAg) or HBSAg negative/ HB core antibody positive/ HBV PCR positive).
* Has substantial medical condition, that in the opinion of the investigator would preclude participation, as defined by

  * cardiovascular condition that may lead to an increased risk of complication if placed on study drugs.
  * gastrointestinal condition that would impair absorption of study drugs.
  * neurological or psychiatric condition that would significantly impair the ability to adhere to PrEP.
  * calculated GFR \< 60 mL/min.
  * alcohol or drug abuse or dependence that would significantly impair the ability to adhere to PrEP (only for those with severe impairment).
  * other medical condition that would unacceptably increase the risk of harm from study drug or significantly impair the ability to adhere to PrEP.
* Suspected sensitivity or allergy to the study drug or any of its components.
* Currently using an essential product or medication that interacts with the study drug such as the following:

  * ART (including nucleoside analogs, non-nucleoside reverse transcriptase inhibitors, protease inhibitors or investigational antiretroviral agents)
  * Agents with known nephrotoxic potential:

    * aminoglycoside antibiotics (including gentamicin)
    * IV amphotericin B
    * cidofovir
    * cisplatin
    * foscarnet
    * IV pentamidine
    * IV vancomycin
    * oral or IV gancyclovir
    * other agents with significant nephrotoxic potential
  * Drugs that slow renal excretion

    * Probenecid
  * Immune system modulators

    * Systemic chemotherapeutic agents (i.e. cancer treatment medications)
    * Ongoing systemic corticosteroids (with the exception of short courses of tapering steroid doses for asthma or other self- limited condition).
    * Interleukin-2 (IL-2)
    * Interferon (alpha, beta, or gamma)
  * Other agent known to have a significant interaction with TDF or FTC
  * Proteinuria 2+ or greater by urine dipstick
  * Signs or symptoms suggestive of acute HIV infection
  * Any other reason or condition that in the opinion of the investigator would interfere with participation, complicate interpretation of study outcome data, or otherwise interfere with achieving the study objectives.

Answer: A