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EPI 1 > West Nile Fever > Flashcards

West Nile Fever Flashcards

1
Q

Migratory birds play a role in the transmission of West Nile virus

A

True

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2
Q

Mammals are mostly accidental hosts of West Nile Fever virus

A

True

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3
Q

West Nile Fever is a notifiable disease

A

True

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4
Q

In West Nile epidemics wild bird mortality is usually observed before horse and human cases can be detected

A

True

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5
Q

To prevent West Nile Fever, vaccine is available for horses

A

True

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6
Q

The West Nile Fever can be diagnosed unambiguously by the clinical signs

A

False

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7
Q

The West Nile Fever virus infects mostly swine and cattle

A

False

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8
Q

The West Nile virus may cause encephalitis in humans and in horses

A

True

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9
Q

Horses and humans do not play a significant role in the transmission of West Nile virus

A

True

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10
Q

The West Nile fever epidemics occur usually at the end of summer and during Autumn

A

True

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11
Q

WNV typically causes reproductive problems in cattle

A

False

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12
Q

West Nile fever can be unambiguously diagnosed on the basis of clinical signs

A

False

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13
Q

Fomites play the most significant role in the transmission of WNV

A

False

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14
Q

West Nile Virus is only present in Africa

A

False

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15
Q

Wild birds are the natural hosts of West Nile virus

A

True

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16
Q

WNV causes central nervous signs in 80-90% of the infections

A

False

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17
Q

WNV outbreaks usually develop in the end of summer and in autumn

A

True

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18
Q

WNV cannot be isolated in cell cultures

A

False

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19
Q

Vaccines are available for the prevention of horses from WNV infections

A

True

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20
Q

Horses are the reservoirs host of WNV

A

False

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21
Q

Horses are the reservoirs host of WNV

A

False

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22
Q

Different genetic lineages of West Nile virus are circulating in Europe

A

True

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23
Q

Various strains of WNV, belonging to different genetic lineages are circulating in Europe

24
Q

There is no vaccine available for humans against WNV infection yet

25
Mosquitoes are the principle vectors of the WNV
True
26
The weather does not influence the occurrence of WNV outbreaks
False
27
The sero-diagnostics of WNV is complicated by cross-reactions with related flaviviruses
True
28
Certain predatory bird species are particularly sensitive to WNV infections
True
29
The use of repellents may reduce the risk of infection with WNV
True
30
The weather influences the emergence of West Nile Virus outbreaks, through its effect on mosquito propagation dynamics
True
31
Laboratory diagnosis should confirm the aetiology of West Nile encephalitis
True
32
West-Nile fever practically is restricted to Africa
False
33
The most important maintaining hosts of West Nile fever virus are water birds
True
34
Clinical signs of West Nile fever are most frequently seen in birds, horses and humans
True
35
Neurological signs develop only in a small percentage of the diseased animals
True
36
West Nile fever occurs worldwide
True
37
Vectors of West Nile fever virus are different mosquito species
True
38
The host range of West Nile virus is very wide
True
39
Humans are not susceptible to West Nile disease virus
False
40
The sero-diagnostics of West Nile virus is complicated by cross-reactions with related flaviviruses
True
41
The West Nile Virus is genetically uniform, but at least 15 serotypes are known
False
42
Certain predatory bird species are particularly sensitive to West Nile virus infections
True
43
The use of repellents may reduce the risk of infection with West Nile virus
True
44
Fomites play the most significant role in the transmission of the West Nile Virus
False
45
West Nile Virus typically causes reproductive problems in cattle
False
46
There are no available vaccinations for humans against West Nile Virus yet
True
47
The principal vectors of the West Nile Virus are midges
False
48
Different genetic lineages of West Nile Virus are circulating in Europe
True
49
West Nile Virus mainly causes diarrhoea in sheep
False
50
West Nile Virus causes central nervous signs in 80-90% of the infections
False
51
West Nile Virus outbreaks usually develop in the end of summer and in autumn
True
52
West Nile Virus cannot be isolated in cell cultures
False
53
West Nile Virus is the only known zoonotic flavivirus
False
54
The Japanese encephalitis virus causes abortion in swine
True
55
The Wesselsbron disease causes meningoencephalitis in turkey
False
56
The yellow fever virus causes liver damages
True
57
The zika virus causes fever, rash and conjunctivitis in humans
True

EPI 1 (56 decks)

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