Two Adults Die of West Nile Virus in North Carolina
Two Adults Die of West Nile Virus in North Carolina as health officials warn that warm fall weather is keeping mosquito transmission elevated.
West Nile Virus
New Jersey Reports First West Nile Death of 2026
New Jersey Reports First West Nile Death of 2026 as officials confirm 26 human cases and unusually high mosquito activity statewide.
Los Angeles County West Nile Cases Surge to 135
Los Angeles County West Nile Cases Surge to 135 as health officials report 130 hospitalizations and five deaths during a severe 2026 season.
Orange County Reports First West Nile Deaths of 2026
Orange County Reports First West Nile Deaths of 2026 as health officials confirm 36 infections and urge residents to prevent mosquito bites.
LA County Reports 100 West Nile Virus Cases
LA County has reached 100 West Nile virus cases this year, with health officials warning activity is unusually high for this point in the season.
California Confirms 12th Equine West Nile Virus Case
California has confirmed its 12th equine West Nile virus case of 2026 after an unvaccinated mare in El Dorado County became ill.
Why Are Mosquito Viruses Rising Across the U.S. in 2026?
West Nile activity started unusually early, dengue is showing up in Florida mosquito traps, and the U.S. just had its hottest summer on record.
California West Nile Activity Hits Five-Year High
California has reported 86 West Nile virus cases in 2026 as mosquito activity remains elevated, with new cases and positive mosquito samples reported in Los Angeles and Orange counties.
Orange County Mosquito Treatments Continue Across Cities
Orange County continues overnight mosquito treatments across several cities as officials track high West Nile virus activity.
West Nile Cases Surge in Long Beach, With 17 Residents Infected
West Nile cases in Long Beach have risen to 17 in 2026, the city’s highest count in more than a decade as mosquito-borne illness surges.
West Nile Case Confirmed in Jacksonville as Officials Step Up Mosquito Control
A locally acquired West Nile virus case has been confirmed in Duval County, prompting increased mosquito surveillance and ground spraying in Jacksonville.