West Nile virus has been detected in three mosquito samples collected across Iowa, according to the Iowa Department of Health and Human Services (HHS). Last week’s positive detections mark the first ones for the state in 2025. The samples were gathered from surveillance sites and tested at the State Hygienic Laboratory (SHL). No human cases have been reported in Iowa so far this year. In 2024, the state recorded 21 human cases of West Nile virus, including one death. West Nile virus is primarily transmitted through the bites of infected mosquitoes. Iowa HHS is urging residents to take precautions to reduce their risk of infection. Iowans are encouraged to use EPA-registered insect repellents containing DEET, Picaridin, or other similar repellents. Additionally, wearing long-sleeved shirts and pants and avoiding outdoor activities at dawn and dusk can also help. Residents should also eliminate standing water around homes—such as in buckets, old tires, or pet dishes—where mosquitoes breed. For more information on West Nile virus and other mosquito-borne illnesses, follow the link included below.
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