EL MONTE — West Nile virus has been detected in a mosquito sample collected from a surveillance trap in the city of El Monte, officials said Tuesday, July 29. The San Gabriel Valley Mosquito ...

Dr. Cameron Kaiser, deputy health officer for the county's public health division, said this is the first detection of West Nile in the county this year.

UPDATED: August 6, 2025 at 2:49 PM PDT West Nile virus, the leading cause of mosquito-borne disease in the continental United States, is back on the public health radar in Solano County.

The confirmation in of West Nile in Kings County brings the total number of human cases throughout California to 55. To learn more about West Nile in the state, click here.