More signs of West Nile virus discovered in 3 Contra Costa cities, officials urge precautions

by Janis Mara, Bay City News August 28, 2024August 27, 2024

An Ochlerotatus triseriatus mosquito feeds on a human hand on September 19, 2002. Also known as Aedes triseriatus and commonly known as the ‘treehole mosquito’, this species been identified as positive for West Nile virus. (James Gathany/Centers for Disease Control via Bay City News)

New signs of West Nile virus have surfaced this week in Contra Costa County, the Mosquito and Vector Control District said.

Groups of infected mosquitoes were found in traps in Martinez and Oakley, while an infected bird was found dead in Brentwood, the district said in a statement Friday.

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