Los Angeles, CA, November 6, 2026 —

California has recorded a significant number of West Nile virus (WNV) cases this year, with health officials reporting over 500 instances of the illness in 2026 as of the current date.

West Nile virus is primarily transmitted to humans through the bite of an infected mosquito. Mosquitoes become infected when they feed on birds that carry the virus. While many people infected with WNV experience no symptoms, others may develop mild to severe illness.

Symptoms of West Nile virus disease can include fever, headache, body aches, joint pains, vomiting, diarrhea, or rash. In some rare cases, the virus can affect the central nervous system, leading to severe symptoms such as encephalitis (inflammation of the brain) or meningitis (inflammation of the membranes surrounding the brain and spinal cord). Older adults and individuals with weakened immune systems are at higher risk for severe illness.

State and local health departments typically monitor WNV activity throughout the warmer months, which are the peak season for mosquito activity. Efforts often include surveillance of mosquito populations, testing for the virus in birds and mosquitoes, and public outreach campaigns to educate residents on how to protect themselves from mosquito bites.

The exact number of West Nile virus cases, along with any associated fatalities or geographical distribution within the state, was not further detailed in the provided summary. Information regarding specific public health advisories or interventions related to this year’s case count was also not available.

Residents are generally advised to take preventive measures, such as using insect repellent containing DEET, wearing long sleeves and pants, and eliminating standing water around homes where mosquitoes can breed. Staying informed about local WNV activity is also recommended.



Story summarized from the original created by Google News on news.google.com, see more information here.

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