PRESS RELEASE - First mosquitoes of 2026 test positive for West Nile virus in Lancaster, CA
For Immediate Release
May 22nd, 2026 Contact:
Brenna Bates-Grubb-Community Outreach Specialist
Zachary Russell- Mosquito Surveillance Technician
West Nile virus is endemic in the Antelope Valley and the Antelope Valley Mosquito and Vector Control District continues to urge residents to take precautions against mosquito bites!
Lancaster, CA, May 22nd, 2026: Mosquitoes collected from a mosquito trap in Lancaster tested positive for West Nile virus (WNV). The trap was placed near 25th Street East and Avenue K. “These West Nile virus positive mosquito samples are a good reminder that WNV is active in the Antelope Valley and that residents need to be vigilant about personal mosquito control measures,” said District Manager Leann Verdick. The Antelope Valley typically doesn’t see WNV activity this early in the warm season, but “other areas of Los Angeles County have also detected some WNV positive mosquito samples in the last few weeks, so this isn’t too out of the ordinary even if it is a bit early in the season for the Antelope Valley,” said Surveillance technician Zachary Russell.
Hot weather is ideal to breed mosquitoes quickly. Stagnant water turns green more quickly and mosquitoes can go from egg to adult in just 5 days. Mosquito control is a shared responsibility of the property owner and the District. If both parties do their part to get rid of or treat standing water, the entire community will benefit from less mosquitoes and less chances of mosquito-borne diseases, such as West Nile virus.
AVMVCD personnel will continue to conduct intensive searches of the area surrounding this WNV detection as well as throughout the entire District to keep mosquito populations low and reduce the chances of residents getting ill. This includes following up with residents who have been identified as having unmaintained swimming pools. Please report any unmaintained swimming pools to the District as this remains one of the main breeding sources of West Nile virus mosquitoes.
People bitten by an infected mosquito may develop West Nile fever and experience flu-like symptoms that can include fever, body aches, skin rash, and fatigue. In some people, West Nile fever can develop into a more serious form of the disease and can even be fatal.
The District urges residents to do their part to protect themselves from mosquito bites by following these recommendations:
• Check property for standing water and get rid of it
• When mosquitoes are active, use EPA registered insect repellents that contain one of these main ingredients: DEET, Picaridin, Oil of Lemon Eucalyptus, IR3535 according to label instructions
•If weather permits, wear clothes that cover as much skin as possible; this reduces the areas of skin in which mosquitoes can access you for a bite
• Make sure your screens on windows and doors are in good repair to avoid mosquitoes inside the home
• Check around faucets and air conditioner units, and repair leaks or puddles that remain for several days
• Report daytime biting mosquitoes to the AVMVCD at 661-942-2917
• Report stagnant/dirty pools to the AVMVCD at 661-942-2917
• Report dead birds by calling 1-877-WNV-BIRD (877-968-2473) or online at www.westnile.ca.gov This helps the state track potential WNV hotspots
To stay up-to-date on new West Nile Virus activity in the Antelope Valley and any mosquito related information visit our website at www.avmosquito.org, Facebook page (https://www.facebook.com/avmosquito), and follow us on X and Instagram @AVMosquito.
For any further questions or services please feel free to contact the Antelope Valley Mosquito & Vector Control District by phone (661-942-2917)