First West Nile virus death of 2025 reported in LA County – NBC Los Angeles

Los Angeles County reported its first West Nile virus death of the year, public health officials announced Friday.

A San Fernando Valley resident passed away from neurological illness caused by the virus, according to the LA Department of Public Health.

“This tragic loss reminds us how dangerous mosquito-borne diseases like West Nile virus and dengue can be,” LA County health officer Muntu Davis said in a statement.

Fourteen West Nile infections have been reported in the region so far this year, not counting Pasadena and Long Beach, according to health officials. 

Half of those cases were in the San Fernando Valley, where last year’s first reported West Nile case occurred.

Public Health is reporting the first West Nile virus death of 2025. The resident lived in the San Fernando Valley and was hospitalized and died from neurological illness caused by severe West Nile Virus. Swipe to learn how you can prevent the spread of mosquito-borne diseases… pic.twitter.com/aeZ9uKZLri

— LA Public Health (@lapublichealth) October 24, 2025

The virus is the most common mosquito-borne disease that impacts LA residents, health officials said. The area’s mosquito season began in June and lasts until November.

Most people who have West Nile don’t show any symptoms, but about one in five will get a fever and show other signs, such as headache and joint pains. 

Symptoms normally go away after three to 14 days, and health officials advised people showing severe signs to call their doctor.

To prevent getting West Nile, the LA Department of Public Health recommended wearing mosquito repellent and preventing mosquitoes from getting inside.

Health officials also suggested removing any standing water outside homes, such as in flowerpots and birdbaths, so mosquitoes cannot breed.

Residents can call 2-1-1 or their local control agency to report mosquito problems. They can also contact the Public Health InfoLine at 1-833-540-0473.