Isolations of a California Group Arbovirus from Florida Mosquitoes

Summary

Recoveries of virus were made from 8 of 234 pools of Aedes infirmatus mosquitoes collected in the Tampa Bay region of Florida during 1963. A prototype of these, TB3-1, was shown to be closely related, if not identical, to trivittatus virus belonging in the California group of arthropod-borne viruses. The 7 remaining isolates were similarly characterized.

A. infirmatus mosquitoes were present in every month of the year, although their abundance markedly increased in the Spring after heavy rainfall. Although the species is known to bite man readily, there was minimal evidence of transmission of this California group arbovirus to man in the Tampa Bay area of Florida during 1963.

Author Notes

Virologist, Encephalitis Research Center, Florida State Board of Health, Tampa, Florida.

Professor of Epidemiology, Department of Epidemiology and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.

Research Associate, Department of Epidemiology and Microbiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.

Entomologist, Encephalitis Research Center, Florida State Board of Health, Tampa, Florida.

Director, Encephalitis Research Center, Florida State Board of Health, Tampa, Florida.

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