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Epi > Arteriviruses > Flashcards

Arteriviruses Flashcards

1
Q

Arterivirus, the virulence is highly variable

A

true

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2
Q

1) The equine viral arteritis is caused by an arterivirus

A

true

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3
Q

2) Serological tests can NOT be used for laboratory detection of equine viral arteritis

A

false

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4
Q

3) Red blood cells can be used for laboratory detection of equine viral arteritis virus

A

false

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5
Q

4) Nasal fluid can be used for laboratory detection of equine viral arteritis virus

A

true

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6
Q

5) A semen sample can be used for laboratory detection of equine viral arteritis virus

A

true

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7
Q

6) Equine arteritis virus is very resistant to physical damages

A

false

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8
Q

7) Equine viral arteritis is usually asymptomatic

A

false, should be true

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9
Q

8) In cases of equine viral arteritis, the rate of seroconverted animals increases with age

A

true

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10
Q

9) The main target cells of equine viral arteritis are macrophages

A

true

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11
Q

10) Equine Viral arteritis (EVA) virus can affect donkeys

A

true

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12
Q

11) The persistence of EVA virus within one herd is usually caused by the stallions

A

true

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13
Q

12) EVA is transmitted by sexual and aerogenic pathways

A

true

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14
Q

13) EVA can cause persistent virus carrying

A

true

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15
Q

14) Equine Viral Arteritis virus can infect by inhalation

A

true

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16
Q

15) Vaccine against Equine Viral Arteritis is never used in Europe

A

false

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17
Q

16) The Equine Viral Arteritis is caused by retrovirus

A

false

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18
Q

17) The equine viral arteritis virus cannot damage the wall of blood vessels

A

false

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19
Q

18) The equine viral arteritis virus rarely causes asymptomatic infection

A

false

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20
Q

19) The equine viral arteritis virus always causes clinical symptoms

A

false

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21
Q

20) EVA is spread by insect vectors

A

false

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22
Q

21) Long term carrier of EVA

A

true

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23
Q

22) Equine viral arteritis causes reproductive problems/impotence in stallions

A

true

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24
Q

23) Acute equine viral arteritis is similar to Equine infectious anaemia

A

true

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25
Q

24) Equine viral arteritis in mare is reactivated in pregnancy

A

false

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26
Q

25) Equine viral arteritis, aborted embryos have degenerated liver

A

false

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27
Q

26) Mares are frequently life-long carriers of the Equine arteritis virus

A

false

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28
Q

27) Subcutaneous oedema is a frequent sign of equine viral arteritis.

A

true

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29
Q

28) Pregnant mares usually abort in the acute phase of equine viral arteritis

A

true

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30
Q

29) Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (Coggins test).

A

false

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31
Q

30) The Equine arteritis virus may cause abortion in pregnant mares

A

true

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32
Q

31) Vaccination of colts before puberty can prevent the development of EAV-carrier status.

A

true

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33
Q

32) Stallions may be long-term carriers of the Equine arteritis virus

A

true

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34
Q

33) Conjunctivitis and subcutaneous oedema are possible signs of equine viral arteritis.

A

true

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35
Q

34) Equine viral arteritis virus can infect through nasal route.

A

true

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36
Q

35) Equine viral arteritis virus can infect per os

A

true

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37
Q

36) Equine viral arteritis virus can infect through venereal way

A

true

38
Q

37) Equine viral arteritis virus can infect only by arthropods

A

false

39
Q

38) Equine arteritis virus is a uniform virus without serotypes, subtypes etc

A

true

40
Q

39) Aerogenic infection can happen in the case of equine arteritis virus.

A

true

41
Q

40) Equine arteritis virus is shed in the semen

A

true

42
Q

41) Equine arteritis virus can cause abortion

A

true

43
Q

42) Lameness due to inflammatory joints is the most typical sign of Equine infectious arteritis

A

false

44
Q

43) Equine infectious arteritis is a notifiable disease; therefore vaccinations are forbidden

A

false

45
Q

44) After equine viral arteritis virus infection, mortality rate is low.

A

true

46
Q

45) Equine infectious arteritis is a notifiable disease

A

true

47
Q

46) The main target of Equine viral arteritis virus is macrophages

A

true

48
Q

47) Equine infectious arteritis is stenoxen viruses

A

true

49
Q

48) Equine viral arteritis can be controlled in part by removing long-term carriers.

A

true

50
Q

1) PRRS is caused by an arterivirus

A

true

51
Q

2) PRRS is caused by a coronavirus

A

false

52
Q

3) The clinical signs of PRRS can be abortion like that of SMEDI

A

true

53
Q

4) Isolation of PRRS in cell culture can be easily performed in any laboratory

A

false

54
Q

5) PRRS has only highly pathogenic variants

A

false

55
Q

6) Respiratory signs of PRRS occur just in sows

A

false

56
Q

7) PRRS virus replicates in macrophages

A

true

57
Q

8) PRRS virus replicates in T-lymphocytes

A

false

58
Q

9) The pathological signs of PRRS is typical because the lymph nodes are never enlarged

A

false

59
Q

10) PRRS virus affects the respiratory system in young piglets

A

true

60
Q

11) PRRS cause digestive sign in adult

A

false

61
Q

12) PRRS has 2 phases

A

true

62
Q

target cells of PRRSV are alveolar epithelial cells

A

false

63
Q

14) PRRS can only be isolated in porcine kidney cells

A

false

64
Q

15) PRRS causes immune suppression in prolonged cases

A

false

65
Q

16) Attenuated and inactivated vaccines are available against PRRS

A

true

66
Q

17) PRRS virus causes severe intestinal problems in adult pigs

A

false

67
Q

18) PRRS is characterized by respiratory disease in adult pigs

A

false

68
Q

19) PRRSV attacks the active macrophages

A

true

69
Q

20) For PRRS prevention we can get a very good immunization with inactivated vaccines.

A

false

70
Q

21) PRRS: reproductive and respiratory problems and others with other virulence

A

true

71
Q

22) Maternal immunity protects only short time against PRRS.

A

true

72
Q

23) Porcine reproductive and respiratory virus (PRRSV) can cause abortion only in the advanced stage of pregnancy (over 90 days).

A

false

73
Q

24) Only inactivated vaccines can be used for the prevention against PRRSV

A

false

74
Q

25) Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells.

A

true

75
Q

26) PRRSV infection may influence the reproductive performance of boars.

A

true

76
Q

27) Porcine reproductive and respiratory virus (PRRSV) is a zoonotic agent.

A

false

77
Q

28) Porcine parvoviruses and PRRSV may cause similar disease in sows

A

true

78
Q

29) Porcine reproductive and respiratory vines (PRRSV) does not cause clinical signs in boars

A

false

79
Q

30) Inactivated vaccines alone cannot induce protective immunity against PRRSV.

A

true

80
Q

31) Boars can transmit porcine reproductive and respiratory syndrome virus in the semen

A

true

81
Q

32) Porcine reproductive and respiratory syndrome virus cannot cause abortion, only infertility of the sows

A

false

82
Q

33) There are no vaccines for the prevention of Porcine reproductive and respiratory syndrome.

A

false

83
Q

34) The blue ear disease is caused by dog coronavirus

A

false

84
Q

35) The blue ear disease is caused by FIP

A

false

85
Q

36) The blue ear disease is caused by chicken coronavirus

A

false

86
Q

37) The blue ear disease is caused by PRRS

A

true

87
Q

38) Does PRRS virus have 3 genotypes

A

false

88
Q

39) Oedema can be a sign of PRRS

A

true

89
Q

40) PRRS is deadly in adult animals

A

false

90
Q

41) The Porcine reproductive and respiratory syndrome (PRRS) is only present in North- America

A

false

91
Q

42) The PRRS virus may cause reproductive problems in boars

A

true

92
Q

43) PRRS: cyanosis is one clinical symptom

A

true

Epi (74 decks)

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