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EPI 1 > Circovirus > Flashcards

Circovirus Flashcards

1
Q

The reproduction of the circovirus continuous in the dividing cells

A

True

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2
Q

The circovirus is too small so it’s a bad antigen

A

False

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3
Q

The circovirus is a good antigen

A

True

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4
Q

Circovirus infections are immune suppressive

A

True

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5
Q

Circovirus can easily be cultured in different homologous cell lines

A

False

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6
Q

Circoviruses can be cultured easily in many cell lines

A

False

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7
Q

Resistance of circovirus is very low, in the environment they are inactivated within a day

A

False

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8
Q

The resistance of Circoviruses is high, they remain infectious in the environment for several
months

A

True

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9
Q

Causes generalized lymphoid depletion

A

True

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10
Q

Only causes the depletion of B-lymphocytes

A

False

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11
Q

Canine circoviruses are present worldwide

A

False

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12
Q

Circovirus are very resistant viruses

A

True

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13
Q

The circovirus has circular RNA in its genome

A

False

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14
Q

Swine circovirus causes lesions in multiple organs and strong immunosuppression

A

True

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15
Q

Porcine circovirus can be transmitted by mice and rats

A

True

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16
Q

Porcine circovirus vaccines are available both for sows and for piglets

A

True

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17
Q

Detection of PCV2’s DNA is enough for the correct diagnosis

A

False

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18
Q

Four species of swine circovirus were described

A

True

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19
Q

The porcine circovirus 2 is proven to be immunosuppressive

A

True

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20
Q

PCV2 detection in foetal myocardium is pathognomic value

A

True

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21
Q

Porcine circovirus replicates in the myocardium of the foetus

A

True

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22
Q

In pigs the porcine circovirus 2 can cause BFD

A

False

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23
Q

The porcine circovirus can replicate in the foetus

A

True

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24
Q

The clinical signs, pathological and histopathological examination suggest PCV2 induced
disease

A

True

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25
Q

PCV2 can cause respiratory signs

A

True

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26
Q

The primer replication of PCV2 is in lymphoid tissues of the throat

A

True

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27
Q

PCV2 infection does not always cause clinical signs

A

True

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28
Q

Porcine circovirus 2 always causes clinical signs in pigs

A

False

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29
Q

Porcine circovirus 2 always causes clinical signs in cattle

A

False

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30
Q

There is no efficient vaccine against PCV2

A

False

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31
Q

The porcine circovirus can replicate in the foetus

A

True

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32
Q

Circovirus in pigs can be Subclinical.

A

True

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33
Q

Porcine circoviruses are responsible for a variety of clinical conditions

A

True

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34
Q

Porcine circoviruses cannot be responsible for reproductive disorders

A

False

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35
Q

Porcine circoviruses are present worldwide

A

True

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36
Q

Porcine circovirus can be transmitted by mice and rats

A

True

37
Q

Porcine circoviruses cause severe haemorrhagic diseases in pigs

A

True

38
Q

Porcine circoviruses are genetically and antigenically uniform

A

False

39
Q

Porcine circoviruses may cause a variety of diseases

A

True

40
Q

For prevention of Swine circovirus disease only general hygienic measures can be used

A

False

41
Q

Swine circovirus can cause retarded growth and strong immunosuppression

A

True

42
Q

Swine circovirus caused disease occurs worldwide, it is frequent

A

True

43
Q

For prevention of swine circovirus disease, inactivated vaccine is available

A

True

44
Q

Swine circovirus causes only respiratory signs

A

False

45
Q

Swine circovirus may be shed in excretions for several months after recovery

A

True

46
Q

For prevention of Porcine circovirus disease vaccines are available

A

True

47
Q

The incubation period of Porcine circovirus caused disease is about 2-4 weeks

A

True

48
Q

Incubation period of porcine circovirus disease is short, some days

A

False

49
Q

Porcine circovirus-2 causes clinical signs mainly after weaning

A

True

50
Q

Predisposing factors for Porcine Circovirus associated disease can be: Vaccines. The virus variant. Virus strain

A

True

51
Q

Predisposing factors for Porcine Circovirus associated disease can be Food management

A

False

52
Q

PCV2 can cause: Enteric disorders. Disorders in the nervous system. Respiratory disease. Reproductions disorders

A

True

53
Q

Porcine circovirus-1 may damage the foetus

A

False

54
Q

Porcine circoviruses cannot be responsible for reproductive disorders

A

False

55
Q

Porcine circoviruses replicate in the heart of the foetus

A

True

56
Q

Porcine circovirus may cause inapparent infections

A

True

57
Q

Circovirus can be responsible for the Porcine Respiratory Disease Complex

A

True

58
Q

Reproductive disorders caused by Porcine circoviruses are only significant in North
America

A

False

59
Q

Circovirus cause skin lesions in swine

A

True

60
Q

A clinical sign of PMWS can be a progressive weight loss

A

True

61
Q

PMWS is a type 3 hypersensitivity

A

False

62
Q

PMWS is a type 4 hypersensitivity

A

False

63
Q

One of the most common pathological signs of PMWS is glomerulonephritis

A

False

64
Q

Typical pathological finding of PMWS is enlarged mesenteric lymph nodes

A

True

65
Q

Typical pathological finding of PMWS is pneumonia

A

True

66
Q

A clinical sign of PMWS can be haemorrhages in the skin

A

False

67
Q

In pigs the porcine circovirus 1 can cause PMWS

A

False

68
Q

In pigs the porcine circovirus 2 can cause PDNS

A

True

69
Q

One of the most common pathological signs of PDNS is glomerulonephritis

A

True

70
Q

PDNS is an allergic disease

A

False

71
Q

The appearance of PDNS is related to the good antigenicity of PCV2

A

True

72
Q

PDNS is a type III hypersensitivity

A

True

73
Q

PDNS is a type IV hypersensitivity

A

False

74
Q

PDNS may develop without porcine circovirus 2

A

True

75
Q

One of the most common clinical signs of PDNS is multifocal circular red skin disease

A

True

76
Q

Porcine dermatitis nephropathy can only be caused by circoviruses

A

False

77
Q

Porcine dermatitis and nephropathy syndrome are only caused by PCV-2

A

False

78
Q

PDNS disease is an immunocomplex disease

A

True

79
Q

PDNS is only caused by PCV-1

A

False

80
Q

PDNS does not occur in Hungary

A

False

81
Q

PDNS occurs primarily in the weeks following the selection/weaning

A

True

82
Q

PDNS is caused by both PCV-1 and PCV-2

A

False

83
Q

PDNS is not caused by PCV

A

False

84
Q

PDNS has been widespread in Hungary in Hungary since 1998

A

True

85
Q

PDNS is a rare infection causing clinical signs only in piglets before weaning

A

False

86
Q

PDNS is a frequent infection with clinical signs after weaning

A

True

87
Q

Prevention of PDNS is with live attenuated vaccines

A

False

88
Q

Regarding PDNS, general preventative rules and recently inactivated or vector
vaccination can be used

A

True

EPI 1 (56 decks)

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