Vector Studies in the St. Louis Encephalitis Epidemic, Tampa Bay Area, Florida, 1962

Summary A total of 25,240 mosquitoes was captured in the Tampa Bay area during September and October 1962, using miniature, battery-operated light traps. These were tested in suckling mice in 1,114 pools. A total of 19 isolations of St. Louis encephalitis virus was made, 18 from Culex nigripalpus and a single one from Anopheles crucians. Twenty-nine other virus isolations were made. Twenty-eight were from An. crucians and have been identified as a new virus related to Cache Valley virus of the Bunyamwera arbovirus group; the other was an unidentified virus of the California arbovirus group from Aedes atlanticustormentor.