Tilley said residents can reduce the risk of contracting West Nile by using repellent containing DEET, picaridin, IR 3535, or oil of lemon eucalyptus when outdoors the rest of the summer and into fall.
Brunson said the county and town monitor the situation weekly.
Louisville is not the only city in Kentucky dealing with the West Nile virus.
The human cases, all adults, experienced mild symptoms and did not require hospitalization.
The states with the most human West Nile virus cases this year are Arizona, Texas, California, Mississippi and Louisiana.
Avoid areas where mosquitoes are prevalent. The department does surveillance of mosquito populations with traps strategically located throughout the community, and tests mosquitos for such diseases as Zika and West Nile virus.More news: Scaramucci: Robert Kraft gave President Trump his Super Bowl 51 ring
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Lake County Health Officer, Dr. Karen Tait, recommends avoidance of mosquito bites as the best protection against WNV. Counties with one case each are Bolivar, Clay, Covington, Jones, Leake, Leflore, Lowndes, Noxubee, Perry, Scott and Wilkinson. Humans that are bitten by a mosquito with the virus may show signs three to 15 days after being bitten. "So, four traps that we've set up have gone positive".
According to a Logan City press release, the Bear River Health Department recommends Cache Valley residents apply DEET mosquito repellent and wear long sleeves and trousers from dusk till dawn. Symptoms of the virus include fever, headache, joint pain, weakness and body aches.
Be sure to use insect repellent and wear long sleeves and trousers at these times or consider staying indoors during these hours.
West Nile is a virus spread through mosquito bites.
That includes wearing long sleeves and trousers at dawn and dusk, applying DEET-fortified mosquito repellent, securing window screens and dumping even minuscule amounts of standing water, which mosquitoes use for breeding, according to Vector Control. Make sure that your doors and windows have tight-fitting screens to keep out mosquitoes.