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Epi > Circo > Flashcards

Circo Flashcards

1
Q

The reproduction of the circovirus continues in the dividing cells

A

True

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2
Q

The circovirus is a good antigen

A

True

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3
Q

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

A

False

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4
Q

Circovirus infection are immune suppressive

A

True

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5
Q

Circovirus can easily be cultured in different homologous cell lines

A

True

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6
Q

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

A

True

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7
Q

Causes generalised lymphoid depletion

A

True

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8
Q

Circovirus are very resistant viruses

A

True

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9
Q

Swine circovirus causes lesions in multiple organs and strong immunosuppression

A

True

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10
Q

Porcine circovirus vaccines are available for sows and piglets

A

True

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11
Q

The porcine circovirus 2 is proven to be immunosuppressive

A

True

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12
Q

Four species of swine circovirus were described

A

True

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13
Q

Porcine circovirus can be transmitted by mice and rats

A

True

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14
Q

PCV2 detection in foetal myocardium is pathognomic value

A

True

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15
Q

Porcine circovirus replicates in the myocardium of the foetus

A

True

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16
Q

The porcine circovirus can replicate in foetus

A

True

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17
Q

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

A

True

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18
Q

PCV2 can cause respiratory disease

A

True

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19
Q

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

A

True

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20
Q

PCV2 infection does not always cause clinical signs

A

True

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21
Q

Circovirus in pigs can be Subclinical

A

True

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22
Q

Porcine circoviruses are responsible for a variety of clinical conditions

A

True

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23
Q

Porcine circoviruses are present wordwide

A

True

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24
Q

Porcine circoviruses cause severe haemorrhagic diseases in pigs

A

True

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25
Q

Swine circovirus can cause retarded growth and strong immunosuppression

A

True

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26
Q

For prevention of swine circovirus disease, inactivated vaccine is available

A

True

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27
Q

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

A

True

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28
Q

For prevention of Porcine circovirus disease vaccines are available

A

True

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29
Q

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

A

True

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30
Q

Porcine circovirus 2 causes clinical signs mainly after weaning

A

True

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31
Q

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

A

True

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32
Q

Predisposing =food

A

False!

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33
Q

PCV2 can cause: Enteritic disorders. Disorders in the nervous system. Respiratory disease. Reproduction disorders

A

True

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34
Q

Porcine circovirus 1 may damage the foetus

A

False!

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35
Q

In pigs the porcine circovirus 2 can cause BFD

A

False!

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36
Q

Porcine circoviruses cannot be responsible for reproductive disorders

A

False!

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37
Q

Porcine circoviruses are genetically and antigenetically uniform

A

False!

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38
Q

Incubation of Porcine circovirus is short

A

False!

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39
Q

Porcine circovirus replicate in the heart of the foetus

A

True

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40
Q

Porcine circovirus may cause inapparent infections

A

True

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41
Q

Circovirus can be responsible for the Porcine Respiratory Disease Complex

A

True

42
Q

Circovirus cause skin lesions in swine

A

True

43
Q

A clinical sign of PMWS can be progressive weight loss

A

True

44
Q

PMWS is hypersensitivity

A

False!

45
Q

One of the most common pathological signs of PMWS is glomerulonephritis

A

False!

46
Q

Typical pathological finding of PMWS is enlarged mesenteric lymph nodes

A

True

47
Q

Typical pathological finding of PMWS is pneumonia

A

True

48
Q

PMWS haemorrhages on skin

A

False!

49
Q

PMWS circovirus 1

A

False!

50
Q

In pigs porcine circovirus 2 can cause PDNS

A

True

51
Q

One of the most common pathological signs of PDNS is glomerulonephritis

A

True

52
Q

PDNS is an allergic disease

A

True

53
Q

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

A

True

54
Q

PDNS is a type 3 hypersensitivity

A

True

55
Q

PDNS may develop without porcine circovirus 2

A

True

56
Q

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

A

True

57
Q

Porcine dermatitis and nephropathy only caused by PCV2

A

False!

58
Q

PDNS disease is an immunocomplex

A

True

59
Q

PDNS caused by PCV1

A

False!

60
Q

PDNS occurs primarily in the weeks following selection/weaning

A

True

61
Q

PDNS has been widespread in Hungary since 1998

A

True

62
Q

PDNS rare only before weaning

A

False!

63
Q

PDNS is a frequent infection with clinical signs after weaning

A

True

64
Q

Prevention of PDNS is with live attenuated vaccines

A

False!

65
Q

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

A

True

66
Q

Avian circovirus causes clinical signs similar to those seen in PMWS

A

True

67
Q

Avian circovirus causes clinical signs similar to those seen in PDNS

A

False!

68
Q

Pigeon circovirus not important…

A

False!

69
Q

The beak and feather diseases causes CNS signs

A

False!

70
Q

In parrots porcine circovirus 2 causes the psittacine beak and feather disease

A

False!

71
Q

The beak and feather disease can be acute problem

A

True

72
Q

Feather and beak deformities may appear after circovirus infection of geese and pigeons

A

False

73
Q

Beak and feather disease lesions are sometimes obvious only after moulting

A

True

74
Q

Avian circovirus infections result in high morbidity and low mortality

A

True

75
Q

Pigeon circoviruses are antigenically uniform

A

True

76
Q

Pigeon circoviruses frequently appear in diseases together with other viruses and bacteria

A

True

77
Q

Circovirus in geese and ducks can cause growth and feather formation disturbances

A

True

78
Q

In ducks and geese, Avian circoviruses can cause retarded growth and immunosuppression

A

True

79
Q

Avian circoviruses can spread via breeder eggs

A

True

80
Q

Avian circoviruses are species specific

A

True

81
Q

Avian circoviruses can infect many poultry species

A

True

82
Q

Inactivated vaccines are used against pigeon circovirus infection

A

True?

83
Q

Circovirus can infect pigeons

A

True

84
Q

The chicken infectious anaemia virus is also commonly detected in goose

A

False!

85
Q

Anaemia and haemorrhages are two important clinical signs of chicken anaemia

A

True

86
Q

The chicken infectious anaemia is a chicken disease up to 1 month of age

A

True

87
Q

The chicken anaemia virus does not replicate in lymphoid progenitors

A

False!

88
Q

There are vaccines available against chicken anaemia

A

True

89
Q

The chicken infectious anaemia is a disease of hens

A

False!

90
Q

The chicken infectious anaemia causes clinical signs similar to those seen in PDNS

A

False!

91
Q

Infection of day old chickens with the chicken anaemia virus leads to immune suppression

A

True

92
Q

Chicken anaemia virus is transmitted both horizontally and vertically

A

True

93
Q

Atrophy of the thymus is a post mortem finding in Chicken Infectious Anaemia virus

A

True

94
Q

Infectious chicken anaemia virus causes clinical signs in chicken of 1 to 4 weeks of age

A

True

95
Q

For prevention of infectious chicken anaemia, live attenuated vaccines are available

A

True

96
Q

In Chicken Infectious anaemia, most symptoms are observed in the first month

A

True

97
Q

Chicken Infectious anaemia involves destruction of the lymphoid and myeloid cells

A

True

98
Q

Chicken infectious anaemia virus induces apoptosis of activated T-cells

A

True

99
Q

Pigeons can be infected by Chicken Infectious anaemia virus

A

False!

100
Q

Chicken Infectious anaemia virus does not replicate in the thymus

A

False!

101
Q

Chicken Infectious anaemia virus is a Gyrovirus

A

True

102
Q

Chicken anaemia virus infection can cause death of chickens below 3 weeks of age

A

True

Epi (19 decks)

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