Alphavirus

(al′fă-vī′rŭs)

A genus of the family of Togaviridae viruses (e.g. Eastern Equine Encephalitis virus, Western Equine Encephalitis virus) transmitted to humans by mosquito bite. Alphaviruses have a single-stranded RNA genome. Infection may cause fever, joint pains, rash, or central nervous system infection.

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