Bay Area officials reporting more West Nile virus cases

ALAMO, Calif.

A dead crow in Alamo tested positive for the disease, as well as mosquitoes trapped in Discovery Bay.

And Alameda County is reporting its first West Nile cases of the year, after biologists found two infected dead crows in the past week.

One was discovered in Oakland and the other in Pleasanton.

So far, dead animals have tested positive in Contra Costa, San Mateo, and Santa Clara Counties.

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