West Nile fever Flashcards
Migratory birds play a role in the transmission of West Nile virus
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Mammals are mostly accidental hosts of West Nile Fever virus
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West Nile Fever is a notifiable disease
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In West Nile epidemics wild bird mortality is usually observed before horse and human cases
can be detected
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To prevent West Nile Fever, vaccine is available for horses
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The West Nile Fever can be diagnosed unambiguously by the clinical signs
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The West Nile Fever virus infects mostly swine and cattle
F
The West Nile virus may cause encephalitis in humans and in horses
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Horses and humans do not play a significant role in the transmission of West Nile virus
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The West Nile fever epidemics occur usually at the end of summer and during Autumn
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WNV typically causes reproductive problems in cattle
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West Nile fever can be unambiguously diagnosed on the basis of clinical signs
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Fomites play the most significant role in the transmission of WNV
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West Nile Virus is only present in Africa
F
Wild birds are the natural hosts of West Nile virus
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WNV causes central nervous signs in 80-90% of the infections
F
WNV outbreaks usually develop in the end of summer and in autumn
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WNV cannot be isolated in cell cultures
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Vaccines are available for the prevention of horses from WNV infections
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Horses are the reservoirs host of WNV
F
Different genetic lineages of West Nile virus are circulating in Europe.
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Various strains of WNV, belonging to different genetic lineages are circulating in Europe
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There is no vaccine available for humans against WNV infection yet
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Mosquitoes are the principle vectors of the WNV
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The weather does not influence the occurrence of WNV outbreaks
F
The sero-diagnostics of WNV is complicated by cross-reactions with related flaviviruses
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Certain predatory bird species are particularly sensitive to WNV infections
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The use of repellents may reduce the risk of infection with WNV
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The weather influences the emergence of West Nile Virus outbreaks, through its effect on
mosquito propagation dynamics.
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Laboratory diagnosis should confirm the aetiology of West Nile encephalitis
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West-Nile fever practically is restricted to Africa.
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The most important maintaining hosts of West Nile fever virus are water birds.
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Clinical signs of West Nile fever are most frequently seen in birds, horses and humans
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Neurological signs develop only in a small percentage of the diseased animals. in WNF
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West Nile fever occurs worldwide.
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Vectors of West Nile fever virus are different mosquito species.
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The host range of West Nile virus is very wide.
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Humans are not susceptible to West Nile disease virus.
F
The sero-diagnostics of West Nile virus is complicated by cross-reactions with related
flaviviruses
T
The West Nile Virus is genetically uniform, but at least 15 serotypes are known.
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Certain predatory bird species are particularly sensitive to West Nile virus infections
T
The use of repellents may reduce the risk of infection with West Nile virus
T
Fomites play the most significant role in the transmission of the West Nile Virus.
F
West Nile Virus typically causes reproductive problems in cattle.
F
There are no available vaccinations for humans against West Nile Virus yet.
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The principal vectors of the West Nile Virus are midges
F
Different genetic lineages of West Nile Virus are circulating in Europe.
T
West Nile Virus mainly causes diarrhoea in sheep.
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West Nile Virus causes central nervous signs in 80-90% of the infections
F
West Nile Virus outbreaks usually develop in the end of summer and in autumn
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West Nile Virus cannot be isolated in cell cultures.
F
West Nile Virus is the only known zoonotic flavivirus.
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