LOUISVILLE, Ky. — Mosquitoes have tested positive for West Nile virus in the Park DuValle, California and Old Louisville neighborhoods, the Louisville Metro Department of Public Health and Wellness said. 

The department said mosquito fogging will take place this week, weather permitting, in ZIP codes 40208, 40210 and 40211 to prevent further infection and reduce the mosquito population. No confirmed human cases have been reported in Jefferson County so far this year.

Most people infected show few to no symptoms, but serious illness can occur at any age, and less than 1% of those infected can develop a neurological illness such as encephalitis or meningitis. Those over 60 have the greatest risk for severe disease, the department said, while those with conditions such as cancer, diabetes, hypertension, kidney disease and people who have received organ transplants are at greater risk for serious illness.

“This is about the time of year we typically see mosquitoes test positive for West Nile,” said Louisville’s Interim Chief Health Strategist Connie Mendel. “No matter what ZIP code you live in, please take precautions to avoid being bitten.”

To avoid getting bitten, the department offered the following tips: 

• Use insect repellents when going outdoors. Repellents should be used according to the label instructions to maximize safety and effectiveness
• When weather permits, wear long sleeves, long pants and socks while outdoors
• Take extra care during peak mosquito biting hours of early morning and dusk
• Use repellent and wear protective clothing from dusk to dawn or avoid outdoor activities during these times

The department also recommended installing or repairing screens on windows and doors to keep mosquitoes outside and emptying standing water from flowerpots, gutters, buckets, pet water dishes and other items to reduce the number of mosquitoes around one's home.

Visit the department’s website or call the mosquito hotline, 502-574-6641, to check when areas will be fogged. Complaints about mosquitoes can be made through Metro311 by dialing 311 or 502-574-5000.