Virus

Jamestown Canyon virus is a California serogroup virus, in the genus Orthobunyavirus, family Peribunyaviridae. Members of the family Peribunyaviridae have three segments of negative-sense, single-stranded RNA; the virus particles are spherical or oval, enveloped, and are 90-100 nanometers in diameter.

Other California serogroup viruses found in the United States include California encephalitis virus, La Crosse virus, Snowshoe hare virus, and Trivittatus virus.