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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
Q

Mosquitoes are the principle vectors of the WNV

26
Q

The weather does not influence the occurrence of WNV outbreaks

27
Q

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

28
Q

Certain predatory bird species are particularly sensitive to WNV infections

29
Q

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

30
Q

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

31
Q

Laboratory diagnosis should confirm the aetiology of West Nile encephalitis

32
Q

West-Nile fever practically is restricted to Africa

33
Q

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

34
Q

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

35
Q

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

36
Q

West Nile fever occurs worldwide

37
Q

Vectors of West Nile fever virus are different mosquito species

38
Q

The host range of West Nile virus is very wide

39
Q

Humans are not susceptible to West Nile disease virus

40
Q

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

41
Q

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

42
Q

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

43
Q

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

44
Q

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

45
Q

West Nile Virus typically causes reproductive problems in cattle

46
Q

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

47
Q

The principal vectors of the West Nile Virus are midges

48
Q

Different genetic lineages of West Nile Virus are circulating in Europe

49
Q

West Nile Virus mainly causes diarrhoea in sheep

50
Q

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

51
Q

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

52
Q

West Nile Virus cannot be isolated in cell cultures

53
Q

West Nile Virus is the only known zoonotic flavivirus

54
Q

The Japanese encephalitis virus causes abortion in swine

55
Q

The Wesselsbron disease causes meningoencephalitis in turkey

56
Q

The yellow fever virus causes liver damages

57
Q

The zika virus causes fever, rash and conjunctivitis in humans

EPI 1 (56 decks)

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