The Los Angeles County Department of Public Health has identified the first case of West Nile virus infection for the 2026 season in a Los Angeles County resident. The person is currently hospitalized after developing WNV encephalitis after symptom onset in late June. The individual lives in the Antelope Valley. “The first human cases of West Nile virus are an ...

A mosquito sample has tested positive for the West Nile virus, (WNV) in Santa Clarita for the first time in at least a year and a half. A mosquito sample has tested positive for the West Nile virus, (WNV) in Santa Clarita for the first time in at least a year and a half. Information from the GLACVCD shows no ...