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Circo Flashcards

(102 cards)

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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
Swine circovirus can cause retarded growth and strong immunosuppression
True
26
For prevention of swine circovirus disease, inactivated vaccine is available
True
27
Swine circovirus may be shed in excretions for several months after recovery
True
28
For prevention of Porcine circovirus disease vaccines are available
True
29
The incubation period of Porcine circovirus disease is about 2-4 weeks
True
30
Porcine circovirus 2 causes clinical signs mainly after weaning
True
31
Predisposing factors of Porcine Circovirus associated disease can be: Vaccines. The virus variant. Virus strain
True
32
Predisposing =food
False!
33
PCV2 can cause: Enteritic disorders. Disorders in the nervous system. Respiratory disease. Reproduction disorders
True
34
Porcine circovirus 1 may damage the foetus
False!
35
In pigs the porcine circovirus 2 can cause BFD
False!
36
Porcine circoviruses cannot be responsible for reproductive disorders
False!
37
Porcine circoviruses are genetically and antigenetically uniform
False!
38
Incubation of Porcine circovirus is short
False!
39
Porcine circovirus replicate in the heart of the foetus
True
40
Porcine circovirus may cause inapparent infections
True
41
Circovirus can be responsible for the Porcine Respiratory Disease Complex
True
42
Circovirus cause skin lesions in swine
True
43
A clinical sign of PMWS can be progressive weight loss
True
44
PMWS is hypersensitivity
False!
45
One of the most common pathological signs of PMWS is glomerulonephritis
False!
46
Typical pathological finding of PMWS is enlarged mesenteric lymph nodes
True
47
Typical pathological finding of PMWS is pneumonia
True
48
PMWS haemorrhages on skin
False!
49
PMWS circovirus 1
False!
50
In pigs porcine circovirus 2 can cause PDNS
True
51
One of the most common pathological signs of PDNS is glomerulonephritis
True
52
PDNS is an allergic disease
True
53
The appearance of PDNS is related to the good antigenicity of PCV2
True
54
PDNS is a type 3 hypersensitivity
True
55
PDNS may develop without porcine circovirus 2
True
56
One of the most common clinical signs of PDNS is multifold circular red skin disease
True
57
Porcine dermatitis and nephropathy only caused by PCV2
False!
58
PDNS disease is an immunocomplex
True
59
PDNS caused by PCV1
False!
60
PDNS occurs primarily in the weeks following selection/weaning
True
61
PDNS has been widespread in Hungary since 1998
True
62
PDNS rare only before weaning
False!
63
PDNS is a frequent infection with clinical signs after weaning
True
64
Prevention of PDNS is with live attenuated vaccines
False!
65
Regarding PDNS, general preventative rules and recently inactivated or vector vaccination can be used
True
66
Avian circovirus causes clinical signs similar to those seen in PMWS
True
67
Avian circovirus causes clinical signs similar to those seen in PDNS
False!
68
Pigeon circovirus not important...
False!
69
The beak and feather diseases causes CNS signs
False!
70
In parrots porcine circovirus 2 causes the psittacine beak and feather disease
False!
71
The beak and feather disease can be acute problem
True
72
Feather and beak deformities may appear after circovirus infection of geese and pigeons
False
73
Beak and feather disease lesions are sometimes obvious only after moulting
True
74
Avian circovirus infections result in high morbidity and low mortality
True
75
Pigeon circoviruses are antigenically uniform
True
76
Pigeon circoviruses frequently appear in diseases together with other viruses and bacteria
True
77
Circovirus in geese and ducks can cause growth and feather formation disturbances
True
78
In ducks and geese, Avian circoviruses can cause retarded growth and immunosuppression
True
79
Avian circoviruses can spread via breeder eggs
True
80
Avian circoviruses are species specific
True
81
Avian circoviruses can infect many poultry species
True
82
Inactivated vaccines are used against pigeon circovirus infection
True?
83
Circovirus can infect pigeons
True
84
The chicken infectious anaemia virus is also commonly detected in goose
False!
85
Anaemia and haemorrhages are two important clinical signs of chicken anaemia
True
86
The chicken infectious anaemia is a chicken disease up to 1 month of age
True
87
The chicken anaemia virus does not replicate in lymphoid progenitors
False!
88
There are vaccines available against chicken anaemia
True
89
The chicken infectious anaemia is a disease of hens
False!
90
The chicken infectious anaemia causes clinical signs similar to those seen in PDNS
False!
91
Infection of day old chickens with the chicken anaemia virus leads to immune suppression
True
92
Chicken anaemia virus is transmitted both horizontally and vertically
True
93
Atrophy of the thymus is a post mortem finding in Chicken Infectious Anaemia virus
True
94
Infectious chicken anaemia virus causes clinical signs in chicken of 1 to 4 weeks of age
True
95
For prevention of infectious chicken anaemia, live attenuated vaccines are available
True
96
In Chicken Infectious anaemia, most symptoms are observed in the first month
True
97
Chicken Infectious anaemia involves destruction of the lymphoid and myeloid cells
True
98
Chicken infectious anaemia virus induces apoptosis of activated T-cells
True
99
Pigeons can be infected by Chicken Infectious anaemia virus
False!
100
Chicken Infectious anaemia virus does not replicate in the thymus
False!
101
Chicken Infectious anaemia virus is a Gyrovirus
True
102
Chicken anaemia virus infection can cause death of chickens below 3 weeks of age
True

Epi (19 decks)

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