EHV - 1
EHV - 3/4
EIA
EIV
EVA
100

How is this virus spread? 

Aerosol/droplet

100

Is this virus stable in the environment? 

No

100

What type of virus is this? 

Retrovirus
100

What is the main form of disease caused? 

Respiratory disease. 

100

What type of virus is this? 

Arterivirus. 

200

What are the possible clinical signs of EHV - 1? 

Respiratory, abortion, and neurological disease. 

200

What does EHV - 4 cause? 

Rhinopneumonitis 

200

How is this virus transmitted? 

Direct contact or iatrogenic. 

200

What two things does this virus exhibit allowing for many serotypes? 

Antigenic shift and drift. 

200

What are the clinical findings? 

Fever, respiratory signs, nasal discharge and lacrimation, edematous swelling of dependent parts. 

300

How do you differentiate different strains of EHV? 

PCR methods help distinguish between EHV-4, EHV-1, and EHV-1 neuropathogenic strains. 

300

What does EHV - 3 cause? 

Coital Exanthema 

300

What are some clinical signs of EIA? 

Depression, edema of the dependent parts, icterus and petechial hemorrhages on conjunctiva, Anemia in recurrent attacks. 
300

What are three clinical findings? 

High fever, frequent dry cough, and nasal discharge. 
300

What specific symptom is clinical presentation linked to? 

Vasculitis 

400

What are some control and prevention measures for this virus? 

Modified and live vaccines (but they don't prevent disease), all confirmed cases isolated for 28 days. 

400

How is EHV - 3 spread? 

Venereally (not sure if that's a word but I made it one) 

400

What is the name of the diagnostic test and what does it test for? 

Coggins test. Tests for Antibody to EIA virus. 

400

Do vaccines provide good protection? Why or why not? 

No, because of drift of the HA protein in the virus. 

400

Who can become persistently infected? 

Stallions

500

How does this present in foals? 

Systemic disease, usually presents as pneumonia. Foals generally die within a day or two. 
500

What kind of vaccines are available for Coital Exanthema? 

There is no vaccine available. 

500

What is chronic disease characterized by? 

Prolonged nature, persistent infection, and immune compromise (i.e. many different presentations) 

500

How do you diagnose this virus? 

PCR. (sorry, didn't have a harder question) 

500

What can prevent colts from becoming persistently infected?  

Modified live virus vaccine.