The Contra Costa Mosquito and Vector Control District has warned of more mosquitoes and birds that have tested positive for West Nile virus around the county.

The district said last Friday dead birds that have tested positive for the virus were found in Clayton, Concord, Crockett, Danville and Walnut Creek, while Concord and Discovery Bay also had trapped mosquitoes that tested positive for the virus.

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Dan McMenamin is the managing editor at Bay City News, directing daily news coverage of the 12-county greater Bay Area. He has worked for BCN since 2008 and has been managing editor since 2014 after previously serving as BCN’s San Francisco bureau reporter. A UC Davis graduate, he came to BCN after working for a newspaper and nonprofit in the Davis area. He handles staffing, including coaching of our interns, day-to-day coverage decisions and management of the newswire.