HERPESVIRUS Flashcards
Herpesviruses are good antigens.
F
Alphaherpesviruses are host specific slowly multiplying (>24hrs) viruses
F (betaherpesvirus is more than 24 h)
<24 h
Alphaherpesviruses may cause latent infection in neurons of ganglia
T
Herpesviruses are sensitive to detergents
T
Some herpesviruses have a broad host spectrum (euryxen)
T
- aujeszky
- malignant catarrhal fever
- turkey herpesvirus
Gammaherpesviruses may cause latent infection in neurons of ganglia
F
Herpes viruses are resistant to detergents
F
Herpesviruses are generally weak antigens
T
Herpesviruses can cause latent persistent infections
T
Herpesviruses are typically stenoxen viruses, but there are significant exceptions
T
Herpesviruses are strong antigens, therefore single vaccinations provide lifelong
protection
F
Herpesviruses are enveloped viruses, therefore they are sensitive to detergents
T
There are no serological cross-reactions between different herpesvirus species.
F
Because the genome of herpesvnruses is very stable, no attenuated mutant vaccine
strains are available.
F
Infectious bovine vulvovaginitis virus strains cause abortions and foetal deformities
F
Herpesvirus infections frequently result in latent virus carry.
T
Herpesviruses usually cause latent infections and life-long virus carries
T
Infectious bovine rhinotracheitis virus can cause abortion.
T (sporadic , mainly in heifers)
The use of marker vaccines can help the eradication of infectious bovine rhinotracheitis
virus.
T
The most frequently used eradication strategy for IBRV is selection with the help of
marker vaccines
T
Marker vaccines can be used in IBRV eradication programs in cattle farms.
T
Antibodies against infectious bovine rhinotracheitis virus (IBRV) might be detected in the
milk
T
Conjunctivitis and blepharitis are signs of infectious bovine rhinotracheitis.
T
The infectious bovine rhinotracheitis virus (IBRV) causes haemorrhagic gastroenteritis.
F