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EPI 1 > Arterivirus > Flashcards

Arterivirus Flashcards

1
Q

Arterivirus, the virulence is highly variable

A

True

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2
Q

The equine viral arteritis is caused by an arterivirus

A

True

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3
Q

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

A

False

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4
Q

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

A

False

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5
Q

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

A

True

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6
Q

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

A

True

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7
Q

Equine arteritis virus is very resistant to physical damages

A

False

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8
Q

Equine viral arteritis is usually asymptomatic

A

True

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9
Q

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

A

True

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10
Q

The main target cells of equine viral arteritis are macrophages

A

True

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11
Q

Equine Viral arteritis (EVA) virus can affect donkeys

A

True

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12
Q

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

A

True

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13
Q

EVA is transmitted by sexual and aerogenic pathways

A

True

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14
Q

After EVA virus infection, mortality rate is low

A

True

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15
Q

Equine arteritis virus is very resistant to physical damage

A

False

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16
Q

Equine viral arteritis is usually asymptomatic

A

True

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17
Q

The main target cells of equine viral arteritis virus are macrophages

A

True

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18
Q

EVA can affect donkeys

A

True

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19
Q

EVA can cause persistent virus carrying

A

True

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20
Q

VA is transmitted sexual and aerogenic

A

True

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21
Q

After EVA infection mortality rate is low

A

True

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22
Q

Equine Viral Arteritis virus can infect by inhalation

A

True

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23
Q

Vaccine against Equine Viral Arteritis is never used in Europe

A

False

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24
Q

The Equine Viral Arteritis is caused by retrovirus

A

False

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25
Q

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

A

False

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26
Q

The equine viral arteritis virus usually causes asymptomatic infection

A

True

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27
Q

The equine viral arteritis virus rarely causes asymptomatic infection

A

False

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28
Q

The equine viral arteritis virus can cause persistent infections

A

True

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29
Q

The equine viral arteritis virus always causes clinical symptoms

A

False

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30
Q

EVA is spread by insect vectors

A

False

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31
Q

Long term carrier of EVA

A

True (stallions)

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32
Q

Equine viral arteritis causes reproductive problems/impotence in stallions

A

True

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33
Q

Acute equine viral arteritis is similar to Equine infectious anaemia

A

True

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34
Q

Equine viral arteritis in mare is reactivated in pregnancy

A

False

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35
Q

Equine viral arteritis, aborted embryos have degenerated liver

A

False

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36
Q

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

A

False

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37
Q

Subcutaneous oedema is a frequent sign of equine viral arteritis

A

True

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38
Q

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

A

True

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39
Q

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

A

False

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40
Q

The Equine arteritis virus may cause abortion in pregnant mares

A

True

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41
Q

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

A

True

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42
Q

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

A

True

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43
Q

Conjunctivitis and subcutaneous oedema are possible signs of equine viral arteritis

A

True

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44
Q

Equine viral arteritis virus can infect through nasal route

A

True

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45
Q

Equine viral arteritis virus can infect per os.

A

True

46
Q

Equine viral arteritis virus can infect through venereal way

A

True

47
Q

Equine viral arteritis virus can infect only by arthropods

A

False

48
Q

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

A

True

49
Q

Aerogenic infection can happen in the case of equine arteritis virus

A

True

50
Q

Equine arteritis virus is shed in the semen.

A

True

51
Q

Equine arteritis virus can cause abortion

A

True

52
Q

Equine arteritis virus is very resistant to physical damages

A

False

53
Q

In case of equine viral arteritis, the rate of seroconverted animals increases with age

A

True

54
Q

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

A

False

55
Q

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

A

False

56
Q

The persistence of equine viral arteritis virus within one herd is usually caused by the
stallions

A

True

57
Q

Equine viral arteritis is transmitted by a sexual and aerogenic pathways

A

True

58
Q

After equine viral arteritis virus infection, mortality rate is low

A

True

59
Q

Equine infectious arteritis is a notifiable disease

A

True

60
Q

The main target of Equine viral arteritis virus is macrophages

A

True

61
Q

Equine infectious arteritis is stenoxen viruses

A

True

62
Q

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

A

True

63
Q

Equine viral arteritis can affect donkeys

A

True

64
Q

PRRS is caused by an arterivirus

A

True

65
Q

PRRS is caused by a coronavirus

A

False

66
Q

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

A

True

67
Q

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

A

False

68
Q

PRRS has only highly pathogenic variants

A

False

69
Q

Respiratory signs of PRRS occur just in sows

A

False

70
Q

PRRS virus replicates in macrophages

A

True

71
Q

PRRS virus replicates in T-lymphocytes

A

False

72
Q

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

A

False

73
Q

PRRS virus affects the respiratory system in young piglets

A

True

74
Q

PRRS cause digestive sign in adult

A

False

75
Q

PRRS has 2 phases

A

True

76
Q

PRRS cause respiratory sign in adult

A

False

77
Q

Target cells of PRRSV are alveolar epithelial cells

A

False

78
Q

PRRS can only be isolated in porcine kidney cells

A

False

79
Q

PRRS causes immune suppression in prolonged cases

A

False

80
Q

Attenuated and inactivated vaccines are available against PRRS

A

True

81
Q

PRRS virus causes severe intestinal problems in adult pigs

A

False

82
Q

PRRS is characterized by respiratory disease in adult pigs

A

False

83
Q

PRRS infection has 2 clinical phases

A

True

84
Q

PRRSV attacks the active macrophages

A

True

85
Q

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

A

False

86
Q

PRRS: reproductive and respiratory problems and others with other virulence

A

True

87
Q

Maternal immunity protects only short time against PRRS

A

True

88
Q

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

A

False

89
Q

Only inactivated vaccines can be used for the prevention against PRRSV

A

False

90
Q

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

A

True

91
Q

PRRSV infection may influence the reproductive performance of boars

A

True

92
Q

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

A

False

93
Q

Porcine parvoviruses and PRRSV may cause similar disease in sows

A

True

94
Q

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

A

False

95
Q

Inactivated vaccines alone cannot induce protective immunity against PRRSV

A

True

96
Q

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

A

True

97
Q

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

A

False

98
Q

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

A

False

99
Q

The blue ear disease is caused by dog coronavirus

A

False

100
Q

The blue ear disease is caused by FIP

A

False

101
Q

The blue ear disease is caused by chicken coronavirus

A

False

102
Q

The blue ear disease is caused by PRRS

A

True

103
Q

Does PRRS virus have 3 genotypes

A

False

104
Q

Oedema can be a sign of PRRS

A

True

105
Q

PRRS is deadly in adult animals

A

False

106
Q

Target cells of PRRSV are alveolar epithelial cells

A

False

107
Q

PRRS virus can only be isolated in porcine kidney cell culture

A

False

108
Q

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

A

False

109
Q

The PRRS virus may cause reproductive problems in boars

A

True

110
Q

PRRS: cyanosis is one clinical symptom

A

True

EPI 1 (56 decks)

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