LOUISVILLE, Ky. — More cases of West Nile viruses have been reported in Jefferson County, showing further spread of the infection in seven more zip codes. The Louisville Metro Department of Public Health and Wellness reported mosquitoes infected with West Nile virus found in surveillance traps in the 40203, 40206, 40208, 40211, 40212, 40213 and 40217 ZIP codes.

This comes on the heels of reported mosquitoes carrying the virus that were found in the Iroquois area last week.

To help prevent infection and reduce the mosquito population, mosquito fogging will take place in the areas of Portland, Irish Hills, Audobon Park and Churchill Downs. Early next week, fogging operations will continue in Riverpark, Merriweather and Shelby Park communities.

Fogging occurs in the early morning or early evening hours. The Department of Public Health and Wellness uses an ultra-low volume fogging machine that disperses an insecticide that is very low in toxicity and odor. The U.S. Environmental Protection Agency and Kentucky Department of Agriculture recognize the product as safe to use without posing unreasonable risks to human health.

Though West Nile virus has been detected in mosquitoes this year, so far, no human cases have been reported in Jefferson County.

“No matter what ZIP code you live in, we encourage you to protect yourself and your family from mosquitoes,” said Louisville’s Interim Chief Health Strategist Connie Mendel.

The health department reminded people to avoid mosquito bites by using insect repellents, wearing long sleeves and long pants when possible and avoid peak mosquito biting hours.

They also recommend efforts to prevent mosquito breeding grounds by installing or repairing screens on windows and doors, and empty any standing water around your home.

After mosquitoes test positive for West Nile virus, fogging occurs within the next 7 to 10 business days, weather permitting. To check if your area will be fogged visit the department’s website or call the mosquito hotline, 502-574-6641. To make a complaint about mosquitos in your neighborhood call Metro311 by dialing 311 or 502-574-5000.