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NewsTelemundo 52 — LocalJuly 2, 2026Los Angeles

West Nile Virus Detected in Orange County Mosquitoes

Health officials have confirmed the presence of West Nile virus in mosquitoes across 10 cities in Orange County. Residents are urged to take precautions against bites, especially during the holiday weekend, as mosquito activity is currently higher than the five-year average.

Read the full story at Telemundo 52 — Local

Why It Matters

Residents in 10 Orange County cities face an increased risk of West Nile virus exposure, requiring them to use repellent and eliminate standing water to prevent mosquito breeding.

Key Facts

  • West Nile virus has been detected in mosquitoes in 10 Orange County cities.
  • The 10 affected cities are Newport Beach, Buena Park, Costa Mesa, Garden Grove, Santa Ana, Seal Beach, Huntington Beach, Cypress, Fullerton, and Westminster.
  • Buena Park, Santa Ana, and Fullerton currently have the highest concentrations of infected mosquitoes.
  • Mosquito activity in the county is currently higher than the average of the last five years.
  • No human cases of West Nile virus have been reported in the county so far this year.
  • The agency recorded 186 infected mosquito samples in total last year.
  • The primary species detected is the Southern house mosquito (Culex quinquefasciatus), which is most active at dawn and dusk.
  • Authorities have not yet initiated truck-based fumigation.
  • Residents are advised to use repellent, maintain window screens, use fans, and empty standing water weekly.

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