West Nile virus symptoms (Photo CDC)
The Los Angeles County Department of Public Health has confirmed the first local death from West Nile virus during the 2026 mosquito season.
By News Desk
The resident, who lived in the San Fernando Valley, was hospitalized and died from a neurological illness caused by a severe West Nile virus infection.
“We extend our heartfelt condolences to the family and friends grieving the loss of a loved one to West Nile virus,” said Muntu Davis, MD, MPH, Los Angeles County health officer. “This tragic loss is a reminder of the serious threat posed by mosquito-borne diseases, including West Nile virus and dengue.”
Davis urged residents to take steps to reduce their risk, including using insect repellent, removing standing water where mosquitoes breed, and ensuring that windows and doors have tight-fitting screens without holes or tears.
West Nile virus is the most common mosquito-borne disease affecting Los Angeles County residents. The virus is endemic to the region, and Public Health reports cases each year. Peak mosquito season in the county lasts from June through November.
Fifteen West Nile virus infections have been documented in Los Angeles County so far this year, excluding Long Beach and Pasadena, where cases are reported by local health departments. The number of infections is higher than the five-year average for the same period. Half of those infected live in the San Fernando Valley.
In collaboration with local vector control agencies, Public Health monitors the risk of West Nile virus infection and provides residents with information about mosquito protection. Local vector control districts are reporting higher-than-expected numbers of positive mosquito pools and dead birds in Los Angeles County this year.
“After experiencing the warmest winter on record, West Nile virus amplification—and, consequently, detection—in Los Angeles County started almost two months early this year, leading to widespread activity countywide,” said Susanne Kluh, general manager of the Greater Los Angeles County Vector Control District.
Although mosquito abundance has been suppressed, virus detections continue to be frequent, Kluh said. She urged residents to wear repellent outdoors, especially during dawn and dusk, when mosquitoes carrying West Nile virus are most active.
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