Endemic Eastern Equine Encephalomyelitis in Florida: A Twenty-Year Analysis, 1955–1974

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  • Health Program Office, Department of Health and Rehabilitative Services, P. O. Box 210, Jacksonville, Florida 32201

Research and surveillance programs relating to the circulation of eastern equine encephalomyelitis (EEE) virus in Florida between 1955 and 1974 are summarized. All available data suggest that EEE virus is 1) endemic in many Florida fresh water swamps and waterways, 2) active in a continuous cycle throughout the year with a peak between May and August, and 3) circulating in Culiseta melanura. It has been isolated also from eight other mosquito species.

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