Arterivirus Flashcards
Arterivirus, the virulence is highly variable
True
The equine viral arteritis is caused by an arterivirus
True
Serological tests can NOT be used for laboratory detection of equine viral arteritis
False
Red blood cells can be used for laboratory detection of equine viral arteritis virus
False
Nasal fluid can be used for laboratory detection of equine viral arteritis virus
True
A semen sample can be used for laboratory detection of equine viral arteritis virus
True
Equine arteritis virus is very resistant to physical damages
False
Equine viral arteritis is usually asymptomatic
True
In cases of equine viral arteritis, the rate of seroconverted animals increases with age
True
The main target cells of equine viral arteritis are macrophages
True
Equine Viral arteritis (EVA) virus can affect donkeys
True
The persistence of EVA virus within one herd is usually caused by the stallions
True
EVA is transmitted by sexual and aerogenic pathways
True
After EVA virus infection, mortality rate is low
True
Equine arteritis virus is very resistant to physical damage
False
Equine viral arteritis is usually asymptomatic
True
The main target cells of equine viral arteritis virus are macrophages
True
EVA can affect donkeys
True
EVA can cause persistent virus carrying
True
VA is transmitted sexual and aerogenic
True
After EVA infection mortality rate is low
True
Equine Viral Arteritis virus can infect by inhalation
True
Vaccine against Equine Viral Arteritis is never used in Europe
False
The Equine Viral Arteritis is caused by retrovirus
False
The equine viral arteritis virus cannot damage the wall of blood vessels
False
The equine viral arteritis virus usually causes asymptomatic infection
True
The equine viral arteritis virus rarely causes asymptomatic infection
False
The equine viral arteritis virus can cause persistent infections
True
The equine viral arteritis virus always causes clinical symptoms
False
EVA is spread by insect vectors
False
Long term carrier of EVA
True (stallions)
Equine viral arteritis causes reproductive problems/impotence in stallions
True
Acute equine viral arteritis is similar to Equine infectious anaemia
True
Equine viral arteritis in mare is reactivated in pregnancy
False
Equine viral arteritis, aborted embryos have degenerated liver
False
Mares are frequently life-long carriers of the Equine arteritis virus
False
Subcutaneous oedema is a frequent sign of equine viral arteritis
True
Pregnant mares usually abort in the acute phase of equine viral arteritis
True
Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (Coggins test)
False
The Equine arteritis virus may cause abortion in pregnant mares
True
Vaccination of colts before puberty can prevent the development of EAV-carrier status.
True
Stallions may be long-term carriers of the Equine arteritis virus
True
Conjunctivitis and subcutaneous oedema are possible signs of equine viral arteritis
True
Equine viral arteritis virus can infect through nasal route
True
Equine viral arteritis virus can infect per os.
True
Equine viral arteritis virus can infect through venereal way
True
Equine viral arteritis virus can infect only by arthropods
False
Equine arteritis virus is a uniform virus without serotypes, subtypes etc
True
Aerogenic infection can happen in the case of equine arteritis virus
True
Equine arteritis virus is shed in the semen.
True
Equine arteritis virus can cause abortion
True
Equine arteritis virus is very resistant to physical damages
False
In case of equine viral arteritis, the rate of seroconverted animals increases with age
True
Lameness due to inflammatory joints is the most typical sign of Equine infectious arteritis
False
Equine infectious arteritis is a notifiable disease; therefore vaccinations are forbidden
False
The persistence of equine viral arteritis virus within one herd is usually caused by the
stallions
True
Equine viral arteritis is transmitted by a sexual and aerogenic pathways
True
After equine viral arteritis virus infection, mortality rate is low
True
Equine infectious arteritis is a notifiable disease
True
The main target of Equine viral arteritis virus is macrophages
True
Equine infectious arteritis is stenoxen viruses
True
Equine viral arteritis can be controlled in part by removing long-term carriers
True
Equine viral arteritis can affect donkeys
True
PRRS is caused by an arterivirus
True
PRRS is caused by a coronavirus
False
The clinical signs of PRRS can be abortion like that of SMEDI
True
Isolation of PRRS in cell culture can be easily performed in any laboratory
False
PRRS has only highly pathogenic variants
False
Respiratory signs of PRRS occur just in sows
False
PRRS virus replicates in macrophages
True
PRRS virus replicates in T-lymphocytes
False
The pathological signs of PRRS is typical because the lymph nodes are never enlarged
False
PRRS virus affects the respiratory system in young piglets
True
PRRS cause digestive sign in adult
False
PRRS has 2 phases
True
PRRS cause respiratory sign in adult
False
Target cells of PRRSV are alveolar epithelial cells
False
PRRS can only be isolated in porcine kidney cells
False
PRRS causes immune suppression in prolonged cases
False
Attenuated and inactivated vaccines are available against PRRS
True
PRRS virus causes severe intestinal problems in adult pigs
False
PRRS is characterized by respiratory disease in adult pigs
False
PRRS infection has 2 clinical phases
True
PRRSV attacks the active macrophages
True
For PRRS prevention we can get a very good immunization with inactivated vaccines
False
PRRS: reproductive and respiratory problems and others with other virulence
True
Maternal immunity protects only short time against PRRS
True
Porcine reproductive and respiratory virus (PRRSV) can cause abortion only in the advanced
stage of pregnancy (over 90 days)
False
Only inactivated vaccines can be used for the prevention against PRRSV
False
Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells
True
PRRSV infection may influence the reproductive performance of boars
True
Porcine reproductive and respiratory virus (PRRSV) is a zoonotic agent
False
Porcine parvoviruses and PRRSV may cause similar disease in sows
True
Porcine reproductive and respiratory vines (PRRSV) does not cause clinical signs in boars
False
Inactivated vaccines alone cannot induce protective immunity against PRRSV
True
Boars can transmit porcine reproductive and respiratory syndrome virus in the semen
True
Porcine reproductive and respiratory syndrome virus cannot cause abortion, only infertility
of the sows
False
There are no vaccines for the prevention of Porcine reproductive and respiratory syndrome
False
The blue ear disease is caused by dog coronavirus
False
The blue ear disease is caused by FIP
False
The blue ear disease is caused by chicken coronavirus
False
The blue ear disease is caused by PRRS
True
Does PRRS virus have 3 genotypes
False
Oedema can be a sign of PRRS
True
PRRS is deadly in adult animals
False
Target cells of PRRSV are alveolar epithelial cells
False
PRRS virus can only be isolated in porcine kidney cell culture
False
The Porcine reproductive and respiratory syndrome (PRRS) is only present in North-
America
False
The PRRS virus may cause reproductive problems in boars
True
PRRS: cyanosis is one clinical symptom
True