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West Nile Virus Update – July 25, 2022

PDF - PR_20220725 WNV Update

Santa Fe Springs, CA (July 25, 2022) – The Greater Los Angeles County Vector Control District (GLACVCD/District) has confirmed 15 additional mosquito samples that tested positive for West Nile virus (WNV). This brings the total number of positive samples within the District’s service area to 30 this year. The new positive samples were collected from nine different communities: Arleta, Encino, Mission Hills, North Hills, Norwalk, Reseda, Sepulveda Basin, Signal Hill, and South El Monte.

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West Nile virus is endemic to Los Angeles County, and warm temperatures can increase virus activity and mosquito populations. Visit VectorSurv Maps or for a comprehensive look at this year’s West Nile virus activity throughout Los Angeles County and Southern California.

  • Mosquito control is a shared responsibility and residents must take an active role in reducing the threat of WNV in their neighborhoods by taking these additional steps:
  • Eliminate standing water in clogged rain gutters, rain barrels, discarded tires, buckets, watering troughs, or anything that holds water for more than a week.
  • Change the water in pet dishes, bird baths, and other small containers weekly.
  • Wear EPA-registered and CDC-recommended insect repellent when outdoors where mosquitoes may be present.
  • Report neglected (green) swimming pools in your neighborhood to your vector control district.
  • Share this information with your community to decrease mosquito populations.

For more information, residents can contact the Greater Los Angeles County Vector Control District at 562-944-9656, online at, or on social media: Facebook, Twitter, Instagram


Media Contacts

Anais Medina Diaz, Public Information Officer | | 562-944-9656

Mary-Joy Coburn, Director of Communications | | 562-944-9656