Confirmed instance of West Nile Virus discovered in Kentucky; authorities urge residents to adopt protective measures
In Louisville, Kentucky, a case of West Nile virus has been confirmed in a resident, marking the first human case in the state for 2025 [1]. This virus, which has been present in Louisville mosquitoes for several years, has prompted the city's Chief Health Strategist, Connie Mendel, to urge everyone to protect themselves against mosquito bites [2].
To safeguard against mosquitoes, the current prevention measures in Kentucky focus on personal protective measures and environmental control. The recommended steps include using insect repellents containing DEET, picaridin, IR3535, some oil of lemon eucalyptus, or para-menthane-diol; wearing long sleeves, long pants, and socks outdoors, especially during peak mosquito activity at early morning and dusk; eliminating standing water from flowerpots, gutters, buckets, pool covers, and pet dishes; and installing or repairing window and door screens to keep mosquitoes out [3][4][5].
It's crucial to use repellents according to the label instructions for optimal safety and effectiveness. When applying repellents, avoid spraying them on the skin under your clothing [6]. Instead, consider spraying clothes with repellent containing permethrin or another EPA-registered repellent for extra protection against mosquito bites [7].
It's important to note that about 80% of infected people do not develop symptoms, but serious illness occurs in roughly 1 in 150 cases, especially in those aged 60+ and people with certain medical conditions like cancer, diabetes, hypertension, kidney disease, or organ transplants [1]. Symptoms of severe West Nile virus illness can include high fever, headache, neck stiffness, disorientation, tremors, convulsions, muscle weakness, vision loss, numbness, and paralysis. Mild cases may show fatigue, headaches, muscle weakness, or disorientation [1][2]. There is no specific treatment or vaccine; supportive care, rest, fluids, and over-the-counter pain relievers help relieve symptoms [2].
In summary, prevention in Kentucky in 2025 strongly centers on personal protective measures against mosquito bites and environmental control to limit mosquitoes, while symptoms range from asymptomatic to severe neurological illness, with no vaccine available [1][2][3][4][5]. To stay safe, consider avoiding outdoor activities during peak mosquito-biting hours, or ensure to use repellent and wear protective clothing.
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