What is the causative agent of West Nile fever ?

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What is the causative agent of West Nile fever ?

Bacteria
Virus
Protozoa
Fungus
This question was previously asked in
UPSC Combined Section Officer – 2024
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West Nile fever is a viral infection transmitted primarily by mosquitoes. The causative agent is the West Nile virus (WNV).
– West Nile fever is caused by a virus.
– The virus is transmitted by mosquitoes.
West Nile virus is a single-stranded RNA virus that belongs to the genus Flavivirus, family Flaviviridae. It is commonly found in Africa, Europe, the Middle East, West Asia, and North America. Most people infected with WNV have no symptoms, but some develop fever, headache, body aches, joint pains, vomiting, diarrhea, or rash. A small percentage develop severe illness affecting the central nervous system.

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