West Nile Virus Cases Surging Across Los Angeles County

Los Angeles County Reports 135 West Nile Infections and Five Deaths, Topping Its Five-Year Average for the Season

LA County reports 135 West Nile infections and five deaths in 2026, above its five-year average. Who is at risk, and how can mosquito bites.

West Nile virus cases surging across Los Angeles County

More cases of West Nile virus are being reported in Los Angeles County, with at least five deaths being blamed on the virus already this year. West Nile virus-positive mosquito samples and dead bir…

LA County sees heightened West Nile virus activity

Culex mosquitoes can transmit West Nile virus and are most active from dusk to dawn.

West Nile Virus Activity Across Greater Los Angeles Heightened

The Greater Los Angeles County Vector Control District (GLACVCD/District) is alerting residents to heightened West Nile virus (WNV) activity across Los Angeles County and reminding the public to take precautions against mosquito bites.   West Nile Virus positive mosquito samples and dead birds have surpassed last year’s levels and are trending above the five-year average, while ...