California (La Crosse virus) encephalitis in Minnesota

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California encephalitis (CE) in Minnesota is caused by the La Crosse virus, which has been isolated from adult mosquitoes collected in the Winona and Carver Counties. Epidemiologic studies indicate that foci of La Crosse virus activity are restricted to particular areas. CE has been documented in 83 children hospitalized in Minnesota during the summers of 1967 through 1973. All the patients survived, but 15% had sequelae. A mild and a severe clinical form of CE were defined, the severe form becoming more prevalent during the last 3 yr. A recently developed counterelectrophoresis test can provide early and rapid diagnosis in 38% of cases.

Original languageEnglish (US)
Pages (from-to)876-881
Number of pages6
JournalMinnesota Medicine
Issue number11
StatePublished - Dec 1 1974


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