PP Flashcards
Fetuses have no immune reactions.They appear only in 2-4 weeks old animals
F
Stenoxen means it has a wide host range
F
Genome of the agent is detected with PCR
T
Eggs of different species can be hatched together; they cannot infect each other thanks to the different hatching time
F
Surface antigens of certain viruses can be detected by ELISA and PCR
F
Half-life of homologous hyperimmune serum is about 2-3 weeks
T
Virulence is a stable characteristic
F
Inactivated vaccines contain inactivated bacterial toxins
T
Avirulent strains can be used in live vaccines
T
Foetuses can have active immune respons
T
The reproduction of the circovirus continuous in the dividing cells
T
Capripoxviruses cause long lasting immunity
T
Brucella ovis can frequently cause septicaemia in Rams
F
Haemorrhagic enteritis is a frequent pathologial lesion of CSF
T
Hemmorrhages and death by shock are seen in peracute FMD
F
CNS and eye problems are clinical signs of CSF
T
Canine brucellosis is zoonotic
T
Circoviruses are too small therefore are weak antigens
F
In lumpy skin disease the arthropods as mechanical vectors are very important
T
CSF infection during the second half of the pregnancy leads to foetal developmental problems
F
Ruminants can carry foot and mouth virus for up to 3 years
T
PCV2 can cause respiratory signs
T
Classical swine fever causes immunosuppression
T
A clinical sign of sheep pox is lion head
F