LLCHD Reports Human Case of West Nile Virus in Lancaster County

Published on September 08, 2025

The Lincoln-Lancaster County Health Department (LLCHD) today reported the first human case of West Nile virus (WNV) in Lancaster County so far this season. Mosquitoes have also tested positive for the virus locally. LLCHD urges residents to continue to take precautions against WNV.

“Even though we’ve had some cooler weather and we’re getting closer to fall, we’re still in the height of WNV season and there is potential for more human cases,” said Chris Schroeder, Environmental Health Supervisor. “It’s important to keep using your bug spray and taking other basic steps to protect against mosquitoes until we experience that first frost.”

WNV is primarily spread to people through the bite of an infected mosquito with the highest risk occurring in mid to late summer. Residents can prevent mosquito bites by following these precautions:

  • Use an EPA-registered insect repellent when spending time outside such as those with DEET, picaridin, IR3535, oil of lemon eucalyptus, para-menthane-diol, or 2-undecanone. Visit epa.gov/insect-repellents for more information.
  • Limit time outdoors at dusk and dawn when mosquitoes are most active.
  • Wear long-sleeved shirts, pants, shoes, and socks when outside.

Most people who become infected with WNV do not feel sick. About one in five will develop a fever with other symptoms such as headache, body aches, joint pains, vomiting, diarrhea or rash. Less than 1% of people infected will develop a serious illness like encephalitis or meningitis (inflammation of the brain or surrounding tissues).

The Health Department also reminds residents to keep taking steps to help reduce mosquitoes in and around their homes:

  • Dump small wading pools daily and maintain swimming pools properly.
  • Clear debris, weeds, and litter from drainage ways.
  • Change water in birdbaths weekly and pet bowls daily.
  • Store tires, buckets, and containers where they can’t collect water.
  • Fill low spots in yards.
  • Maintain garden ponds and fountains and always keep water flowing.

For questions about WNV, mosquito control, and standing water or to file mosquito breeding site complaints, contact LLCHD at 402-441-8002.

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