Arterivirus Flashcards
1
Q
Arterivirus, the virulence is highly variable
A
True
2
Q
The equine viral arteritis is caused by an arterivirus
A
True
3
Q
Serological tests can NOT be used for laboratory detection of equine viral arteritis
A
False
4
Q
Red blood cells can be used for laboratory detection of equine viral arteritis virus
A
False
5
Q
Nasal fluid can be used for laboratory detection of equine viral arteritis virus
A
True
6
Q
A semen sample can be used for laboratory detection of equine viral arteritis virus
A
True
7
Q
Equine arteritis virus is very resistant to physical damages
A
False
8
Q
Equine viral arteritis is usually asymptomatic
A
True
9
Q
In cases of equine viral arteritis, the rate of seroconverted animals increases with age
A
True
10
Q
The main target cells of equine viral arteritis are macrophages
A
True
11
Q
Equine Viral arteritis (EVA) virus can affect donkeys
A
True
12
Q
The persistence of EVA virus within one herd is usually caused by the stallions
A
True
13
Q
EVA is transmitted by sexual and aerogenic pathways
A
True
14
Q
After EVA virus infection, mortality rate is low
A
True
15
Q
Equine arteritis virus is very resistant to physical damage
A
False
16
Q
Equine viral arteritis is usually asymptomatic
A
True
17
Q
The main target cells of equine viral arteritis virus are macrophages
A
True
18
Q
EVA can affect donkeys
A
True
19
Q
EVA can cause persistent virus carrying
A
True
20
Q
VA is transmitted sexual and aerogenic
A
True
21
Q
After EVA infection mortality rate is low
A
True
22
Q
Equine Viral Arteritis virus can infect by inhalation
A
True
23
Q
Vaccine against Equine Viral Arteritis is never used in Europe
A
False
24
Q
The Equine Viral Arteritis is caused by retrovirus
A
False
25
The equine viral arteritis virus cannot damage the wall of blood vessels
False
26
The equine viral arteritis virus usually causes asymptomatic infection
True
27
The equine viral arteritis virus rarely causes asymptomatic infection
False
28
The equine viral arteritis virus can cause persistent infections
True
29
The equine viral arteritis virus always causes clinical symptoms
False
30
EVA is spread by insect vectors
False
31
Long term carrier of EVA
True (stallions)
32
Equine viral arteritis causes reproductive problems/impotence in stallions
True
33
Acute equine viral arteritis is similar to Equine infectious anaemia
True
34
Equine viral arteritis in mare is reactivated in pregnancy
False
35
Equine viral arteritis, aborted embryos have degenerated liver
False
36
Mares are frequently life-long carriers of the Equine arteritis virus
False
37
Subcutaneous oedema is a frequent sign of equine viral arteritis
True
38
Pregnant mares usually abort in the acute phase of equine viral arteritis
True
39
Equine viral arteritis is diagnosed by agarose-gel immunodiffusion (Coggins test)
False
40
The Equine arteritis virus may cause abortion in pregnant mares
True
41
Vaccination of colts before puberty can prevent the development of EAV-carrier status.
True
42
Stallions may be long-term carriers of the Equine arteritis virus
True
43
Conjunctivitis and subcutaneous oedema are possible signs of equine viral arteritis
True
44
Equine viral arteritis virus can infect through nasal route
True
45
Equine viral arteritis virus can infect per os.
True
46
Equine viral arteritis virus can infect through venereal way
True
47
Equine viral arteritis virus can infect only by arthropods
False
48
Equine arteritis virus is a uniform virus without serotypes, subtypes etc
True
49
Aerogenic infection can happen in the case of equine arteritis virus
True
50
Equine arteritis virus is shed in the semen.
True
51
Equine arteritis virus can cause abortion
True
52
Equine arteritis virus is very resistant to physical damages
False
53
In case of equine viral arteritis, the rate of seroconverted animals increases with age
True
54
Lameness due to inflammatory joints is the most typical sign of Equine infectious arteritis
False
55
Equine infectious arteritis is a notifiable disease; therefore vaccinations are forbidden
False
56
The persistence of equine viral arteritis virus within one herd is usually caused by the
stallions
True
57
Equine viral arteritis is transmitted by a sexual and aerogenic pathways
True
58
After equine viral arteritis virus infection, mortality rate is low
True
59
Equine infectious arteritis is a notifiable disease
True
60
The main target of Equine viral arteritis virus is macrophages
True
61
Equine infectious arteritis is stenoxen viruses
True
62
Equine viral arteritis can be controlled in part by removing long-term carriers
True
63
Equine viral arteritis can affect donkeys
True
64
PRRS is caused by an arterivirus
True
65
PRRS is caused by a coronavirus
False
66
The clinical signs of PRRS can be abortion like that of SMEDI
True
67
Isolation of PRRS in cell culture can be easily performed in any laboratory
False
68
PRRS has only highly pathogenic variants
False
69
Respiratory signs of PRRS occur just in sows
False
70
PRRS virus replicates in macrophages
True
71
PRRS virus replicates in T-lymphocytes
False
72
The pathological signs of PRRS is typical because the lymph nodes are never enlarged
False
73
PRRS virus affects the respiratory system in young piglets
True
74
PRRS cause digestive sign in adult
False
75
PRRS has 2 phases
True
76
PRRS cause respiratory sign in adult
False
77
Target cells of PRRSV are alveolar epithelial cells
False
78
PRRS can only be isolated in porcine kidney cells
False
79
PRRS causes immune suppression in prolonged cases
False
80
Attenuated and inactivated vaccines are available against PRRS
True
81
PRRS virus causes severe intestinal problems in adult pigs
False
82
PRRS is characterized by respiratory disease in adult pigs
False
83
PRRS infection has 2 clinical phases
True
84
PRRSV attacks the active macrophages
True
85
For PRRS prevention we can get a very good immunization with inactivated vaccines
False
86
PRRS: reproductive and respiratory problems and others with other virulence
True
87
Maternal immunity protects only short time against PRRS
True
88
Porcine reproductive and respiratory virus (PRRSV) can cause abortion only in the advanced
stage of pregnancy (over 90 days)
False
89
Only inactivated vaccines can be used for the prevention against PRRSV
False
90
Porcine reproductive and respiratory virus (PRRSV) propagates in lymphatic cells
True
91
PRRSV infection may influence the reproductive performance of boars
True
92
Porcine reproductive and respiratory virus (PRRSV) is a zoonotic agent
False
93
Porcine parvoviruses and PRRSV may cause similar disease in sows
True
94
Porcine reproductive and respiratory vines (PRRSV) does not cause clinical signs in boars
False
95
Inactivated vaccines alone cannot induce protective immunity against PRRSV
True
96
Boars can transmit porcine reproductive and respiratory syndrome virus in the semen
True
97
Porcine reproductive and respiratory syndrome virus cannot cause abortion, only infertility
of the sows
False
98
There are no vaccines for the prevention of Porcine reproductive and respiratory syndrome
False
99
The blue ear disease is caused by dog coronavirus
False
100
The blue ear disease is caused by FIP
False
101
The blue ear disease is caused by chicken coronavirus
False
102
The blue ear disease is caused by PRRS
True
103
Does PRRS virus have 3 genotypes
False
104
Oedema can be a sign of PRRS
True
105
PRRS is deadly in adult animals
False
106
Target cells of PRRSV are alveolar epithelial cells
False
107
PRRS virus can only be isolated in porcine kidney cell culture
False
108
The Porcine reproductive and respiratory syndrome (PRRS) is only present in North-
America
False
109
The PRRS virus may cause reproductive problems in boars
True
110
PRRS: cyanosis is one clinical symptom
True
