### agent | virus | animal virus:

Filovirus
* are a family of viruses that resemble a tiny piece of string
  - major category of emerging viruses
* can grow and cause sever damage to the liver, spleen, lymph nodes and lungs.
* operate very skillfully and are quick to destroy their hosts.

Flavivirus
* Many flaviviruses regularly cause significant human morbidity and mortality.
* are animal viruses.
* have different tissue tropism.
* is an animal virus

### agent | virus | animal virus:

Herpes virus
* are a class of viruses, of which there are several
  - large, enveloped double stranded DNA viruses that are extensively host adapted
  - similar in shape and size and reproduce within the structure of a cell
* become almost undetectable to lymphocytes.
* can have a chronic course and recur during periods of stress.
* gain entrance into the body through mucous membranes or skin.
* have the ability to persist in their hosts forever
  - same problem as adenoviruses
* require the amino acid arginine for reproduction.
* serve as models of higher eukaryotic DNA replication for several reasons.

### agent | virus | animal virus | herpes virus:

Herpes zoster
* are shingles.
* can affect the cornea and be followed by iridocyclitis, secondary glaucoma
  - cause severe pain that precedes the typical rash
  - occur in the eye
* causes chicken pox and shingles
  - chickenpox and shingles
* consists of very painful blisters on the skin that follow nerve pathways.
* herpes virus
* is also common in people with compromised immune systems
  - an acute pain problem that typically lasts no more than a month
  - caused by the same virus that causes chickenpox
  - characterized by vesicular lesions and inflammation of the sensory nerve ganglia
  - common and usually dermatomic
  - the medical name for shingles
* painful rash that is caused by the same virus as chicken pox.
* provokes a more rapid and greater rise in antibodies than varicella.
* rare cause of lumbar radiculopathy with pain preceding the skin eruption.
* reactivation of the virus that causes chicken pox.

Paramyxovirus
* cause several respiratory diseases in humans and animals.
* replicate in the cytoplasm and are released by budding.

### agent | virus | animal virus:

Parvo
* affects dogs of any age, but is most devastating to puppies less than five months of age.
* attacks the rapidly dividing cells of the bone marrow and the small intestine.
* can also attack a dog's heart causing congestive heart failure
  - eat through arteries, therefore, Parvo can create a secondary infection
  - result also in intestinal and heart damage
  - survive in the environment for as long as six months
* deadly virus seen mostly in puppies and unvaccinated young dogs.
* is contracted through contact with the feces of an infected dog
  - highly contagious among dogs but is also preventable
  - primarily a puppy disease
  - resistant to many typical disinfectants and can be difficult to eradicate
  - shed in the feces so the fecal-oral route of transmission is most common
* is transmitted by contact with bodily fluid of an infected animal
  - through the feces and vomit of infected dogs and puppies
* virus that appears to be a mutation of feline distemper.