St. Louis Encephalitis found in more mosquitoes

From Champion Newspapers
November 2, 2019

The West Valley Mosquito and Vector Control District detected the presence of St. Louis Encephalitis (SLE) virus in two mosquito samplings collected Oct. 21 to 25 in Chino Hills at Butterfield Ranch Road and Ridgegate Drive, and in Chino at Comet Avenue and Chino-Corona Road.

SLE-positive samples were found in the same Chino location in September.

Previously, SLE had not been detected in the area since the formation of the district in 1983, according to district manager Michelle Brown.

The mosquitoes carrying SLE are not the black and white Aedes mosquitoes that have been aggressively biting residents during the day and night, but the native “Culex” mosquitoes, Dr. Brown said.

SLE is a mosquito-transmitted virus in the “flavivirus family,” which is the same as the West Nile Virus, Dr. Brown said.

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