Herpes Flashcards
what type of virus is herpes
enveloped ds dna
herpesvirus in cattle
- infectious bovine rhinotracheitis (ibr), infectious pustular vulvovaginitis and infectious bovine ballon-phostititis (BHV1)
- bovine mammilitis (bhv-2)
- malignant catarrhal fever (aihv-1 and ohv-2)
herpesviruses in horses
- equine herepes myeloencephalitis (EHM), equine aborition virus (Ehv-1)
- rhinopneumonoitis (Ehv-4)
- equine coital exanthema (Ehv-3)
- equine gammaherpes viruses (ehv-2 and ehv-5)
bovine herepes virus 1 type and natural host
alpha, cow
bovine herpes virus 2 type and natural host
alpha, cow
alcelaphine herpesvirus 1 type and natural host
gama, wildebeest
ovine herpesvirus 2 type and natural host
gama, sheep
pseudorabies virus type and natural host
alpha, pig
most common virus infection of cattle
bovine herpesvirus type 1
bovine herpes virus 1 causes what
- respiratory entry -> infectious bovine rhinotracheitis and aborition
- genital entry -> pustular vulvovaginitis (ipv) and infectious balanoposthititis (Ibp)
low mortality
bovine herpes virus type 1 pathogenesis infectious bovien rhinotracheitis
- primary rep in mucosal surfaces (resp)
- viremia
- abortion and or latency in trigem ganglion
bovine herpes virus type 1 pathogenesis genital route
- primary replication in mucosal surface (genitals)
- genital local signs NO viremia
- +/- latency in sacral ganglion
clinical signs bovine herpesvirus type one infectious bovine rhinotrachietis
- upper resp signs
- fetid odor breath (oronasal ulcers)
- oronasal secretions
- aborition
- rarely encephalitis young calves
clinical signs bovine herpes virus type 1 IPV signs
- fever/ depression/ inappetance
- vesicles or pustules on vulvar skin, vaginal mucosa
- ulcerations vaginal mucosa
- frequent micturition
- tail held away from vulva
bovine herpes virus type 1 IBP clinical signs
- balanatis (inflam glans penis)
- posthititis (inflammation of prepuce)
- vesicles to ulcers
- bulls won’t breed
bovine herpesvirus type 1 hard to differentiate from
other common causes bovine respiratory dx complex
bovine herpesvirus type 1 prevention
- sterilize ai equipment, virus free semen
- steroids to reactive virus so can id carrier pulls
- don’t ship infected cattle with pregnant cattle bc stress -> reactivate
vac preg cattle for bovine herpes virus type 1
NO parenteral mlv intranasal okay
bovine herpes virus 2 causes what in us vs Africa
us - bovine mammilitis (bhm) africa - bovine mammilitis (bhm) - pseudo lumpy skin dx (plsd)
pathogenesis bovine herpes virus type 2
unk but insects and fomites play role in transmission
clinical signs pseudo lumpy skin dx
- oedematous nodules neck, back head chest, tail region
- nodules = painful
- scab formation
clinical signs bovine mammilitis
- skin lesions on teat and udder only of lactating cows
- ulceration of skin of mammary gland
- teat pain and swelling -> can’t milk -> dec milk production and bacterial mastitis bc retention of milk
bovine herpes virus type 2 biopsy
intranuclear incursions, hydronic degeneration of skin cells
bovine herpes virus type 2 vac
none
malignant catarrhal fever general features, in who, what type virus
- fatal in cattle, deer, antilope, buffalo
- gamma herpes virus
malignant catarrhal fever what causes it
causes:
- alcelaphine herpesvirus type 1 (AIHV-1) natural host = wildebeest
- ovine herpesvirus type 2 (OHV-2) natural host = sheep
reportable herpes dxs cows and horses
- malignant catarrhal fever (some states)
- ehv-1 some states
malignant catarrhal fever sigsns natural host
none
malignant catarrhal fever caused by alcelaphine herpesvirus type 1 epidemiology (where morbidity/ mortality)
- in africa and zoos
- morbidity cattle v low, mortality v high (fatal)
malignant catarrhal fever caused by alcelaphine herpesvirus type 1 transmission
- close contact of cows and natural reservoirs around calving time
- DOES NOT spread cow to cow