West Nile mosquitoes found in nine more Louisville neighborhoods

The newly affected ZIP codes and neighborhoods include Old Louisville (40208); Saint Joseph (40217); Portland (40212); California (40210); Shawnee / River Park (40211); and Shively, St. Denis, Rockford Lane, and Upper Hunters Trace (40216).

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Health officials confirmed that the EPA-approved insecticide is safe for public application and will be dispersed in very small, controlled amounts.

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So far in 2026, only one human case has been reported, though health officials emphasize that these numbers remain preliminary as case investigations continue.

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Health officials recommend the “Tip, Toss, and Protect” method to prevent bites and eliminate breeding grounds.

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Toss Trash: Properly dispose of old tires, plastic containers, and other items that collect rainwater.

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For daily fogging updates, residents can call the Mosquito Fogging Hotline at 502-574-6641.

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To receive text alerts when fogging is scheduled in your immediate area, text “LENSALERT” to 67283.

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Report standing water or mosquito concerns to Metro311 by dialing 311 or calling 502-574-5000.

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There have been no West Nile-related deaths in Louisville since 2023.

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In most instances, people infected with West Nile either show no symptoms or relatively mild symptoms.

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The chance of developing a serious neurologic illness such as encephalitis or meningitis from the virus is less than 1%, but serious illness can occur in people of any age.

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However, people over 60 are at the greatest risk along with people diagnosed with cancer, diabetes, hypertension, kidney disease and people who have received organ transplants.

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The chance of developing a serious neurologic illness such as encephalitis or meningitis from the virus is less than 1%, but serious illness can occur in people of any age.

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Health officials urge all residents, not just those where infected mosquitoes have been found, to protect themselves and their families by following these steps.

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Weather permitting, wear long sleeves, long pants and socks outdoors as mosquitoes can bite through lightweight fabrics.

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Also, treat your clothes with insect repellent.

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The nine additional neighborhoods include Old Louisville, Saint Joseph, Portland, California, Shively, PRP, St. Denis, Russell, and Shawnee.

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Louisville Metro Department for Health and Wellness officials plan to conduct mosquito fogging after identifying mosquitoes carrying West Nile virus in nine additional Louisville neighborhoods, according to an Aug. 24 release.

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A map of planned fogging operations is available online.

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Residents are encouraged to use insect repellent when outdoors, wear long sleeves, pants and socks when possible and prevent mosquitoes around the home.

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A human case of the virus was reported in Jefferson County in July, but no other information was release.

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