MT 2 Ida Flashcards
In Europe only low virulence strains of IBuDV can be found.
F.
IBuD is a very contagious disease.
T.
Pigeons are the most susceptible to IBuDV.
F.
Early IBuDV infection damages the humoral immunity.
T.
Wild birds are involved in the transmission cycle of Eastern Eq Encephalomyelitis (EEE).
T.
Ticks are involved in the transmission cycle of EEE.
F.
Viral Eq encephalomyelitis is usually diagnosed on the basis of CS.
F.
In endemic countries vaccines are available against Eq viral encephalomyelitis.
T.
Flaviviruses form distinct serotypes, without serological cross- reactions.
F.
Tick- borne encephalitis virus can be transmitted with raw goat milk.
T.
Tick- borne encephalitis is mainly seen in humans.
T.
The principle vector of Louping ill virus is Rhipicephalus appendiculatus.
F.
WNV is only present in Africa.
F.
Eq are the reservoir hosts of WNV.
F.
The weather influences the emergence of WNV outbreaks, through it’s effect on mosquito propagation dynamics.
T.
Lab diagnosis should confirm the aetiology of West Nile Encephalitis.
T.
Sus is ø susceptible to BoVDV.
F.
The BoVDV genotype 2 is less virulent than genotype 1.
F.
The BoVDV cannot be transmitted by AI.
F.
Intrauterine BoVDV infection always causes abortion.
F.
Fomites do ø play a role in the transmission of CSFV.
F.
Transplacental infection with CSFV may cause immunotolerance in new- born piglets.
T.
Sus shed CSFV only in the terminal phase of the disease.
F.
Europe is free from CSFV.
F.
CSFV is always an acute disease with high mortality in wild boars.
F.
The large intestine are the earliest lesions in CSF.
F.
The diagnosis of CSF is based on paired serum investigations.
F.
Porcine circovirus 2 may cause lesions similar to CSF.
T.
Rodents are the reservoirs hosts of Schmallenberg virus.
T.
In cattle Schmallenberg virus causes transient febrile disease with reduced milk production.
T.
Rift Valley fever virus is a zoonotic agent.
T.
The most frequent sign of the Nairobi sheep disease is encephalitis.
F.
ASF does ø occur in Europe.
F.
ASF is a resistant virus.
T.
Immunocomplexes are formed in the case of ASF.
T.
Only activated vaccines are used for the prevention of ASF.
F.
Teschen disease occurs all over the world.
F.
Only Sus are susceptible to teschovirus encephalomyelitis.
T.
Teschovirus encephalomyelitis virus is transmitted by arthopods.
F.
There is widespread vaccination using inactivated vaccines to prevent teschovirus encephalomyeltis.
F.
Encephalomyocarditis virus can infect only Sus.
F.
Encephalomyocarditis virus remains infective in the environment.
T.
Encephalomyocarditis virus can cause /os infection.
T.
Encephalomyocarditis virus can infect humans.
T.
FMD is sporadic in Europe.
T.
Resistance of FMDV is high, in the environment it remains infectious for weeks.
T.
FMDV frequently causes carditis in young animals.
T.
H2O buffalos are ø susceptible for FMD.
F.
The main signs of FMD are: fever, salivation, formation of vesicles + lameness.
T.
Serological examinations are important in diagnosis of FMD.
F.
In Europe vaccines must ø be used for prevention of FMD.
T.
In sheep CS of FMD are very mild, it is ø easy to recognize.
T.
VESV infects only Sus.
F.
Cats shed Fel Calicivirus for several wks.
T.
Lameness + fever are possible CS of Fel calicivirus infection.
T.
Rabbits >1mnth of age become susceptible to RHDV.
T.
Genetic re- assortements may cause significantn antigenic changes in erovirus strains.
T.
Bluetongue outbreaks mainly occur in summer + autumn.
T.
Goats are more resistant to the bluetongue than sheep.
T.
In Europe vaccination of small ru against bluetongue is mandatory.
F.
The AEqS is endemic in Europe + in the USA.
F.
Oedemas + hemorrhages are the most frequent leisons in AEqS.
T.
The signs of chronic AEqS + EqIA may be similar.
T.
The Eq encephalitis virus may cause abortion.
T.
Rotaviruses infect only mammals.
F.
Rotaviruses are typically transmitted via fecal- oral route.
T.
Trypsin resistant strains of Avian orthoreoviruses frequently cause diarrhea.
T.
Trypsin sensitive strains of avian orthoreoviruses frequently cause tenosynovitis.
T.
The IBuDV is very resistant in the enviroment.
T.
Infection of d- old chicken with IBuDV may cause permanent immunosuppression.
T.
Pathology lesions of IBuD can be similar to Avian Influenza.
T.
Young chicken can be immunized only with inactivated IBuDV vaccines.
F.
EEE is present in Japan + Korea.
F.
Mosquitoes are the principal vectors of the Western Eq encephalitis.
T.
ø characteristic gross pathology lesions are seen in Eq encephalitis caused by Togaviruses.
T.
Eastern, Western + Venezuelan Eq encephalitis viruses are zoonotic agents.
T.
Serological cross reactions frequently occur between related Flaviviruses.
T.
The Tick- borne encephalitis virus can be transmitted via consumption of raw milk.
T.
Louping ill is seen in rabbits in Australia.
F.
The WNV may cause encephalitis in humans + in Eq.
T.
Non- cytopathic strains of BoVDV can cause immunosuppression.
T.
In utero infection with non- cytopathic BoVDV can cause immunotolerance.
T.
Mucosal disease can delevop in cattle persistently infected with BoVD.
T.
The border disease is present only in UK.
F.
The CSFV is a zoonotic agent.
F.
Low virulence strains of CSFV may cause reproductive problems.
T.
CSFV may damage the lymphatic tissues + BV endothelial cells.
T.
Sus can shed CSFV in the incubation period.
T.
Skin suffusions + hemorrhages are signs of CSF.
T.
The CS of ASF + CSF are very different.
F.
Contaminated pork meat can play a role in the transmission of CSFV.
T.
Attenuated vaccines are developed for immunization of Sus against CSFV.
T.
The Schmallenberg virus is a zoonotic agent.
F.
The Rift Valley fever virus can cause reproductive disorders in cattle + sheep.
T.
Necrotic hepatitis is a lesion of Rift Valley fever.
T.
Hemorrhagic gastroenteritis is a lesion of Nairobi sheep disease.
T.
Ticks can transmit ASFV.
T.
Sus + wild boars are susceptible to ASFV.
T.
Warthogs can maintain ASFV in endemic areas.
T.
Attenuated vaccines are used for the prevention of ASF.
F.
SVDV can infect Sus + Ru.
F.
SVDV can cause infection /os.
T.
SVDV does ø cause viraemia, only local lesions can be seen.
F.
SVDV can infect humans.
F.
Duck hepatitis A virus is shed in faeces.
T.
Duck hepatitis A virus can cause germinative infection.
F.
CS of duck hepatitis can be mainly in laying ducks.
F.
Duck hepatitis A virus can be detected with PCR.
T.
For Europe Middle- East, Africa + Asia are the main danger to introduce FMD.
T.
In young animal FMDV frequently causes myocarditis.
T.
FMDV is highly contagious, spreads rapidly.
T.
In endemically infected countries vaccines are also used in prevention of FMD.
T.
O + A serotypes of FMD are mostly widespread in the world.
T.
In sheep CS of FMD are very mild.
T.
The resistance of FMDV is rather low, in the environment it is inactivated within days.
F.
About 1/2 of the countries of the world are presently infected with FMD.
T.
CS of VES can be similar to FMD.
T.
Oral erosions are signs of Fel calicivirus infection.
T.
Virulent strains of Fel calicivirus can cause systemic disease with mortality.
T.
RHD is present only in Australia.
F.
Reoviruses are sensitive to lipid solvents + detergents.
F.
The Bluetongue virus is vectored by midges/gnats.
T.
Lameness + abortions are signs of Bluetongue.
T.
The Epizootic hemorrhagic disease is present in USA in deer.
T.
The natural reservoirs of AEQSV are mainly zebras.
T.
Encephalitis is the most frequent sign of AEqS.
F.
Rotaviruses are shed in faeces in high titers.
T.
Rotaviruses usually cause enteritis in young ( 1- 2 wks old) animals.
T.
Orthoreoviruses can cause pneumoenteritis in calves.
T.
Eq usually develop lethal hemorrhagic enteritis in Orthoreovirus infections.
F.
Infection of adult birds with Orthoreoviruses usually remains subclinical.
T.
Avian orthoreoviruses can cause necrotic + inflammatory foci in visceral organs.
T.
Very virulent strains of IBuDV may cause disease in chicken with maternally derived Ab too.
T.
IBuDV does ø cause disease in adult chicken ( >2 mnths of age).
T.
Fever, diarrhea + anaemia are signs of IBuD.
T.
Vaccines provide high level of protection against all IBuDV strains.
F.
