California Encephalitis in New York State

Vianna, Nicholas J.; Whitney, E. Dow; Bast, T. F.; Deibel, Rudolf; Doll, John M.; Culver, James N.

doi:10.1093/oxfordjournals.aje.a121294

Cited by 2 publications

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“…113,114,112 Horses can participate in Jamestown Canyon virus amplification ; transovarial transmission and venereal transmission occur but are of uncertain ecologic significance 70,151,154,157,158. Many (28%) young adults in lower Michigan, a region where La Crosse encephalitis is relatively uncommon, are seropositive for the Jamestown Canyon virus.…”

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confidence: 99%

Topical Review: La Crosse and Other Forms of California Encephalitis

et al. 1999

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The California serogroup viruses are mosquito viruses that cause human infections on five continents. They are maintained and amplified in nature by a wide variety of mosquito vectors and mammalian hosts; they thrive in a remarkably wide variety of microclimates (eg, tropical, coastal temperate marshland, lowland river valleys, alpine valleys and highlands, high boreal deserts, and arctic steppes). In 1993, California serogroup viruses caused 71% of all cases of arboviral illness in the United States, principally La Crosse encephalitis. The 30 to 180 annual cases of La Crosse encephalitis represent 8% to 30% of all cases of encephalitis, rendering this illness the most common and important endemic mosquito-borne illness in the USA. Subclinical or mild infections are much more common. Methods and results acquired from intense study of California serogroup viruses have been applied, with benefit, to the study of the ecology and pathogenesis of many more serious human arboviral illnesses. The evolutionary potential of viruses, with particular reference to the development of more virulent strains, has been studied more closely in the California serogroup viruses than in almost any other agent of human disease.

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