virology exam 2 Flashcards
virus that causes abortion in every species except sheep
herpes
three major virus that cause abortion in cattle
BVD, BHV, bluetongue
in herpes when does abortion most commonly occur
4 months gestation to full term, tends to cluster
multifocal hepatic necrosis
herpes
what bovine virus typically causes low abortion rates and more commonly infertility
BVD
where does BVD replicate
mucosa and palatine tonsils
BVD lesions
cerebellar hypoplasia
hairless
osteopetrosis
what looks like BVD but is transmitted by culicoides
schmallenberg virus
healthy mare with late term abortions still births and neonatal deaths
EHV1
what is the main difference between EHV and EVA
EVA causes systemic illness in the mares while EHV1 can be asymptomatic
what cells do eva infect
macrophages
what is BVD in small ruminants
border disease
which small ruminant virus in not contagious
bluetongue. transmitted by arthropods
most cases of abortions from this virus have been from vax with the modified live vax
bluetongue
which virus can cause hydrocephalus and hydrancephaly
cache valley virus