West Nile Virus

West Nile virus (WNV) is a single-stranded RNA virus that causes West Nile fever. It belongs to the family of Flaviviridae, specifically from the genus Flavivirus. The primary hosts of WNV are birds. It is primarily transmitted by mosquitoes, mostly species of the genus Culex, but ticks have also been found to carry the virus. West Nile Virus causes a symptom that seems like people catching the characteristics of flu and only a small proportion of patients will advance into West Nile Encephalitis, a symptom that viruses get through blood-brain barrier and infect nervous system.

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