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Epi PQ FINAL Virology > West Nile fever > Flashcards

West Nile fever Flashcards

1
Q

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

A

T

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2
Q

Mammals are mostly accidental hosts of West Nile Fever virus

A

T

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3
Q

West Nile Fever is a notifiable disease

A

T

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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

T

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5
Q

To prevent West Nile Fever, vaccine is available for horses

A

T

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6
Q

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

A

F

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7
Q

The West Nile Fever virus infects mostly swine and cattle

A

F

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8
Q

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

A

T

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9
Q

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

A

T

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10
Q

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

A

T

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11
Q

WNV typically causes reproductive problems in cattle

A

F

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12
Q

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

A

F

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13
Q

Fomites play the most significant role in the transmission of WNV

A

F

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14
Q

West Nile Virus is only present in Africa

A

F

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15
Q

Wild birds are the natural hosts of West Nile virus

A

T

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16
Q

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

A

F

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17
Q

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

A

T

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18
Q

WNV cannot be isolated in cell cultures

A

F

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19
Q

Vaccines are available for the prevention of horses from WNV infections

A

T

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20
Q

Horses are the reservoirs host of WNV

A

F

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21
Q

Different genetic lineages of West Nile virus are circulating in Europe.

A

T

22
Q

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

A

T

23
Q

There is no vaccine available for humans against WNV infection yet

A

T

24
Q

Mosquitoes are the principle vectors of the WNV

A

T

25
Q

The weather does not influence the occurrence of WNV outbreaks

A

F

26
Q

The sero-diagnostics of WNV is complicated by cross-reactions with related flaviviruses

A

T

27
Q

Certain predatory bird species are particularly sensitive to WNV infections

A

T

28
Q

The use of repellents may reduce the risk of infection with WNV

A

T

29
Q

The weather influences the emergence of West Nile Virus outbreaks, through its effect on
mosquito propagation dynamics.

A

T

30
Q

Laboratory diagnosis should confirm the aetiology of West Nile encephalitis

A

T

31
Q

West-Nile fever practically is restricted to Africa.

A

F

32
Q

The most important maintaining hosts of West Nile fever virus are water birds.

A

T

33
Q

Clinical signs of West Nile fever are most frequently seen in birds, horses and humans

A

T

34
Q

Neurological signs develop only in a small percentage of the diseased animals.

A

T

35
Q

West Nile fever occurs worldwide.

A

T

36
Q

Vectors of West Nile fever virus are different mosquito species.

A

T

37
Q

The host range of West Nile virus is very wide.

A

T

38
Q

Humans are not susceptible to West Nile disease virus.

A

F

39
Q

The sero-diagnostics of West Nile virus is complicated by cross-reactions with related
flaviviruses

A

T

40
Q

The West Nile Virus is genetically uniform, but at least 15 serotypes are known.

A

F

41
Q

Certain predatory bird species are particularly sensitive to West Nile virus infections

A

T

42
Q

The use of repellents may reduce the risk of infection with West Nile virus

A

T

43
Q

Fomites play the most significant role in the transmission of the West Nile Virus.

A

F

44
Q

West Nile Virus typically causes reproductive problems in cattle.

A

F

45
Q

There are no available vaccinations for humans against West Nile Virus yet.

A

T

46
Q

The principal vectors of the West Nile Virus are midges

A

F

47
Q

Different genetic lineages of West Nile Virus are circulating in Europe.

A

T

48
Q

West Nile Virus mainly causes diarrhoea in sheep.

A

F

49
Q

West Nile Virus causes central nervous signs in 80-90% of the infections

A

F

50
Q

West Nile Virus outbreaks usually develop in the end of summer and in autumn

A

T

51
Q

West Nile Virus cannot be isolated in cell cultures.

A

F

52
Q

West Nile Virus is the only known zoonotic flavivirus.

A

F

Epi PQ FINAL Virology (123 decks)

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