Viro Final Integrative - TS Flashcards
Integrative questions and reverse questions
What pig disease uses moribund live piglets for diagnostic purposes? what test do they perform on them?
PRRS
viral isolation
Which horse virus is the 2nd viremia important for transmission and CNS invasion?
Equine encephalitides
What is the difference between viral drift and shift?
drift - subs, insertions deletions
shift - recomb, reassortment, defective interfering particles
What horse disease is urinary incontinence a sign of viral myelopathy?
Equine abortion (EHV-1)
Which chicken disease uses embryonated eggs inoculated with buffy coat for virus isolation?
marek’s disease
Which chicken disease are vaccination breaks common because of new antigenic variants?
avian infectious bronchitis
Which chicken virus is shed in the meconium at hatching?
avian leukosis
Which chicken virus is spread in ALL secretions and excretions?
newcastle dz
What are the 5 clinical differences between mareks dz and avian leukosis?
mareks infects all ages, wing and leg paralysis, incidence >5% in unvaccinated flocks, nerve enlargment, interfollicular tumors in bursa
What viruses produce immunotolerant persistantly infected animals?
BVDV
Hog cholera
avian infectious bronchitis
Avian leukosis (congenital only)
What is the gold standard test for swine influenza?
viral isolation
Which 2 viruses use fetal tissues for antigen detection?
Porcine parvo (IF) Equine viral arteritis (RT-PCR)
Which 2 swine diseases do not cause abortion?
PMWS, TGE
Which 2 swine diseases are zoonotic?
swine influenza, swine vesicular dz
Which 4 swine viruses do not use vaccination?
african swine fever, swine influenza, PRRS, TGE
Which 3 swine viruses are notifiable?
hog cholera, swine vesicular dz, african swine fever
Which 2 avian viruses are notifiable?
newcastle, avian influenza
Which swine virus is caused by a picornaviridae virus?
swine vesicular dz
Which swine disease causes low fertility in boars?
parvo
Which swine disease can cause 100% mortality in naive neonates?
TGE
Which swine disease is more frequent in winter months?
PRRS
Which swine disease is infarction of the spleen pathognomic?
hog cholera
Which swine disease can paracrystalline arrays be seen in the cytoplasm?
african swine fever
Which 3 equine viruses cause abortion?
EHV 1, EVA, Equine influenza (2ry)
Which horse diseases is vaccination usually used for control?
EVA, EEE, influenza, EHV 1 + 4,
Which horse viruses are transmitted by direct contact only ?
EHV 4, influenza (aerosol)
Which horse viruses have vertical transmission either transplacentally or through milk?
EIA, EVA,
Which swine virus is transmissable only through saliva and nasal discharge?
pseudorabies
Which avian virus needs vaccines that are constantly updated?
Infectious bursal dz
Which 3 avian viruses are transmitted vertically?
newcastle, IBD, leukosis,
Which 4 chicken viruses are spread thru fecal-oral route?
reovirus, IBD, leukosis, infectious bronchitis,
What are the 3 arboviruses?
WNV, EEE, ASF
Which chicken disease is sporadic in birds over 14 weeks and has an incidence of 3%?
avian leukosis
Which bird disease causes graying of the iris?
mareks virus
Which bird disease is vaccination done in ovo?
mareks virus
What is the only virus that is in birnaviridae?
IBD
Which disease do urate crystals form and cause kidney damage?
IBD
Which disease is the virus found in dandruff?
mareks disease
