LOS ANGELES (AP) — Health officials have confirmed the year’s first known human case of West Nile in Los Angeles County.

At least four California human cases have been reported in California this year.

The Los Angeles County case is only identified as a middle-aged adult who lives in the San Gabriel Valley. City News Service says the patient was hospitalized but is now recovering at home.

The virus that causes West Nile illness is transmitted to people and animals through mosquito bites.

The first confirmed human case of West Nile in California this year was a 70-year-old Kern County woman. She was hospitalized in June and is recovering.

Other confirmed cases include a 6-year-old Stanislaus County girl and a 59-year-old Clovis man.

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