Arteriviruses Flashcards
1) Arterivirus, the virulence is highly variable
T
1) The equine viral arteritis is caused by an arterivirus.
T
2) Serological tests can NOT be used for laboratory detection of equine viral arteritis
F
3) Red blood cells can be used for laboratory detection of equine viral arteritis virus
F
4) Nasal fluid can be used for laboratory detection of equine viral arteritis virus
T
5) A semen sample can be used for laboratory detection of equine viral arteritis virus
T
6) Equine arteritis virus is very resistant to physical damages
F
7) Equine viral arteritis is usually asymptomatic
T
8) In cases of equine viral arteritis, the rate of seroconverted animals increases with age
T (I’m not sure)
9) The main target cells of equine viral arteritis are macrophage
T
10) Equine Viral arteritis (EVA) virus can affect donkeys
T
11) The persistence of EVA virus within one herd is usually caused by the stallions
T
12) EVA is transmitted by sexual and aerogenic pathways
T
13) After EVA virus infection, mortality rate is low
T
14) Equine arteritis virus is very resistant to physical damage
F
15) Equine viral arteritis is usually asymptomatic
T
16) The main target cells of equine viral arteritis virus are macrophages
T
17) EVA can affect donkeys
T
18) EVA can cause persistent virus carrying.
T
19) EVA is transmitted sexual and aerogenic
T
20) After EVA infection mortality rate is low
T (I’m not sure)
21) Equine Viral Arteritis virus can infect by inhalation
T
22) Vaccine against Equine Viral Arteritis is never used in Europe
F
23) The Equine Viral Arteritis is caused by retrovirus
F
24) The equine viral arteritis virus cannot damage the wall of blood vessel
F
25) The equine viral arteritis virus usually causes asymptomatic infection
T
26) The equine viral arteritis virus rarely causes asymptomatic infection
F
27) The equine viral arteritis virus can cause persistent infections
T
28) The equine viral arteritis virus always causes clinical symptoms
F
29) EVA is spread by insect vectors
F
31) Equine viral arteritis causes reproductive problems/impotence in stallions.
T
32) Acute equine viral arteritis is similar to Equine infectious anaemia
T
33) Equine viral arteritis in mare is reactivated in pregnancy
F
34) Equine viral arteritis, aborted embryos have degenerated liver
F
35) Mares are frequently life-long carriers of the Equine arteritis virus.
F
36) Subcutaneous oedema is a frequent sign of equine viral arteritis
T
37) Pregnant mares usually abort in the acute phase of equine viral arteritis
T
38) Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (Coggins test)
F
39) The Equine arteritis virus may cause abortion in pregnant mares
T
40) Vaccination of colts before puberty can prevent the development of EAV-carrier status
T
41) Stallions may be long-term carriers of the Equine arteritis virus
T
42) Conjunctivitis and subcutaneous oedema are possible signs of equine viral arteritis.
T
43) Equine viral arteritis virus can infect through nasal route
T
44) Equine viral arteritis virus can infect per os
T
45) Equine viral arteritis virus can infect through venereal way.
T
46) Equine viral arteritis virus can infect only by arthropods
F
47) Equine arteritis virus is a uniform virus without serotypes, subtypes etc
T
48) Aerogenic infection can happen in the case of equine arteritis virus
T
49) Equine arteritis virus is shed in the semen
T
50) Equine arteritis virus can cause abortion
T
51) Equine arteritis virus is very resistant to physical damage
F
52) In case of equine viral arteritis, the rate of seroconverted animals increases with age
T
53) Lameness due to inflammatory joints is the most typical sign of Equine infectious arteritis
F
54) Equine infectious arteritis is a notifiable disease; therefore vaccinations are forbidden
F
55) The persistence of equine viral arteritis virus within one herd is usually caused by the
stallions
T
56) Equine viral arteritis is transmitted by a sexual and aerogenic pathways
T
57) After equine viral arteritis virus infection, mortality rate is low
T
58) Equine infectious arteritis is a notifiable disease
T
59) The main target of Equine viral arteritis virus is macrophages.
T
60) Equine infectious arteritis is stenoxen viruses
T
61) Equine viral arteritis can be controlled in part by removing long-term carriers
T
62) Equine viral arteritis can affect donkeys
T
PRRS is caused by an arterivirus.
T
PRRS is caused by a coronavirus
F
The clinical signs of PRRS can be abortion like that of SMED
T
Isolation of PRRS in cell culture can be easily performed in any laboratory
F
PRRS has only highly pathogenic variants
F
Respiratory signs of PRRS occur just in sows
F
PRRS virus replicates in macrophages
T
PRRS virus replicates in T-lymphocytes
F
The pathological signs of PRRS is typical because the lymph nodes are never enlarged
F
PRRS virus affects the respiratory system in young piglets
T
PRRS cause digestive sign in adult
F
PRRS has 2 phases
T
PRRS cause respiratory sign in adult
F
Target cells of PRRSV are alveolar epithelial cells
F
PRRS can only be isolated in porcine kidney cells.
F
PRRS causes immune suppression in prolonged cases
F
Attenuated and inactivated vaccines are available against PRRS
T
PRRS virus causes severe intestinal problems in adult pigs
F
PRRS is characterized by respiratory disease in adult pigs
F
PRRS infection has 2 clinical phases
T
PRRSV attacks the active macrophages
T
For PRRS prevention we can get a very good immunization with inactivated vaccines
F
PRRS: reproductive and respiratory problems and others with other virulence
T
Maternal immunity protects only short time against PRRS
T
Porcine reproductive and respiratory virus (PRRSV) can cause abortion only in the advanced
stage of pregnancy (over 90 days).
F
Only inactivated vaccines can be used for the prevention against PRRSV
F
Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells
T
PRRSV infection may influence the reproductive performance of boars
T
Porcine reproductive and respiratory virus (PRRSV) is a zoonotic agent
F
Porcine parvoviruses and PRRSV may cause similar disease in sows
T
Porcine reproductive and respiratory vines (PRRSV) does not cause clinical signs in boars.
F
Inactivated vaccines alone cannot induce protective immunity against PRRSV
T
Boars can transmit porcine reproductive and respiratory syndrome virus in the semen
T
Porcine reproductive and respiratory syndrome virus cannot cause abortion, only infertility
of the sows
F
There are no vaccines for the prevention of Porcine reproductive and respiratory syndrome.
F
The blue ear disease is caused by dog coronavirus
F
The blue ear disease is caused by FIP
F
The blue ear disease is caused by chicken coronavirus.
F
The blue ear disease is caused by PRRS
T
Does PRRS virus have 3 genotypes.
F
Oedema can be a sign of PRRS.
T
PRRS is deadly in adult animals
F
Target cells of PRRSV are alveolar epithelial cells.
F
PRRS virus can only be isolated in porcine kidney cell culture
F
The Porcine reproductive and respiratory syndrome (PRRS) is only present in NorthAmerica
F
The PRRS virus may cause reproductive problems in boars
T
PRRS: cyanosis is one clinical symptom
T
