The Christian County Health Department has confirmed the county's first West Nile virus-positive mosquito sample of the 2026 season. Thankfully, state health officials report there have been no confirmed human cases of West Nile virus in Illinois so far this year.

The mosquitoes were collected in Taylorville on July 20 and tested by the department's Environmental Health staff on July 22nd. Confirmatory testing was completed at the Christian County Health Department laboratory. According to the Illinois Department of Public Health, a county is considered positive for West Nile virus when the virus is detected in a mosquito, bird, horse, or human.

Health officials say recent warm and humid weather has created ideal conditions for mosquito populations across the area. Public Health Administrator Dr. Chad Anderson says the department conducts mosquito surveillance throughout the season to identify West Nile virus activity early and keep residents informed.

Anderson adds that ongoing surveillance, combined with community efforts to eliminate mosquito breeding sites and prevent mosquito bites, plays an important role in protecting public health.

The Christian County Health Department will continue monitoring and testing mosquitoes throughout the county for the remainder of the season.

Residents are encouraged to reduce standing water around their homes, where mosquitoes breed, and take precautions to avoid mosquito bites when spending time outdoors.

For more information about West Nile virus or other disease-carrying insects, contact the Christian County Health Department at 217-824-4113.

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