West Nile Virus Topic Guide
West Nile Virus: West Nile virus is a Flaviviridiae virus transmitted to humans by mosquito bites. West Nile virus infection typically begins with the abrupt onset of fever, chills, muscle aches, headache, and flu-like symptoms. There is no known effective antiviral treatment or vaccine to prevent West Nile virus.
Encephalitis Encephalitis is an acute infection and inflammation of the brain itself. This is in contrast to meningitis, which is an inflammation of the layers covering the brain. Encephalitis symptoms and signs include headache, fever, fatigue, seizures, and photophobia. Treatment depends upon the cause of the encephalitis.
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