BoVD Flashcards
Attenuated vaccine strains against BoVDV may be foetopathic effects.
T.
Eradication of BoVD is based on the removal of immunotolerance.
T.
The only efficient way of BoVD eradication is the replacement of all the animals in the farm.
F.
In sheep, BoVD may cause a disease similar to the border disease.
T.
BoVD + Mucosal disease are caused by the same virus sp.
T.
Mucosal disease usually emerges in cattle farms as explosive outbreaks with high morbidity.
F.
Sus are ø susceptible for BoVDV.
F.
2 serotypes of the BoVDV are known so far, serotypes 2 is more virulent.
T.
BoVDV cannot be propagated in cell cultures.
F.
BoVDV is practically sensitive to disinfectants.
T.
Rodents play a central role in the maintenance of BoVDV in the environment.
F.
BoVD cannot be transmitted with AI.
F.
Non- cytopathic BoVD strain can mutate + become cytopathic.
T.
Intrauterine BoVD infection always cause abortion.
F.
Cytopathic + non- cytopathic biotypes of BoVDV are known.
T.
Wild birds are the natural hosts of the BoVDV.
F.
Environmental contamination does ø play a role in the spread of BoVDV.
F.
The BoVDV typically damages endothelial epithelial- + lymphatic tissues.
T.
Cattle which are immune- tolerant to BoVDV may develop mucosal disease.
T.
Mucosal disease, only inactivated vaccines can be used for the prevention against BoVD.
F.
Cytopathic BoVDV strains cause mucosal disease in immune- tolerant calves.
T.
Non- cytopathic BoVDV infections have immunosuppressive effect.
T.
Because Europe is free from BoVD, it if forbidden to use vaccines against it.
F.
The BoVDV genotype 2 is less virulent than genotype 1.
F.
BoVDV infection may cause immunisuppression.
T.
BoVDV in sheep causes border disease- like illness.
T.
2 genotypes of BoVDV are known.
T.
BoVDV forms 1 serotype, but there are significant antigenuc differences betweem the strains.
T.
Persistently infected animals play the major role in the maintenance + spread of BoVDV.
T.
Because IBoVDV is an immunosuppressive virus, ø vaccines available against it.
F.
