Virus

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La Crosse virus
Image of La Crosse encephalitis virus

La Crosse (LAC) virus is a California serogroup virus, in the genus Orthobunyavirus, family Peribunyaviridae. Members of the family Peribunyaviridae have three segments of single-stranded RNA; the virus particles are spherical or oval, enveloped, and 90-100 nm in diameter.

Other California serogroup viruses found in the United States include California encephalitis virus, Jamestown Canyon virus, snowshoe hare virus, and trivitattus virus.

Page last reviewed: January 7, 2022
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)