LOUISVILLE, Ky. (WDRB) -- Mosquitoes found in south Louisville have tested positive for the West Nile virus.

Samples collected by the Department of Public Health and Wellness were found in the 40214 zip code, which encompasses a large area between the Watterson Expressway and Gene Snyder Freeway and west of I-65.

There have been no human cases of West Nile virus this year in Louisville, although there were three human cases in 2015.

“This is an indication that the West Nile virus is present again this year in Louisville,” said Dr. Joann Schulte, director of the Louisville Metro Department of Public Health and Wellness. “West Nile virus is most commonly transmitted to humans by mosquitoes. You can reduce your risk of being infected with West Nile virus by using insect repellent and wearing protective clothing to prevent mosquito bites.”

The Department of Public Health and Wellness advises people to take the following precautions:

Avoid Mosquito Bites

Use insect repellents when you go outdoors. Repellents containing DEET, picaridin, IR3535, and some oil of lemon eucalyptus and para-menthane-diol products provide longer-lasting protection. To optimize safety and effectiveness, repellents should be used according to the label instructions. More information about insect repellents can be found here.

When weather permits, wear long sleeves, long pants and socks when outdoors. Mosquitoes may bite through thin clothing, so spraying clothes with repellent containing permethrin or another EPA-registered repellent will give extra protection. Don't apply repellents containing permethrin directly to skin. Do not spray repellent on the skin under your clothing.

Take extra care during peak mosquito biting hours. Take extra care to use repellent and protective clothing from dusk to dawn or consider avoiding outdoor activities during these times.

Mosquito-Proof Your Home

Install or repair screens on windows and doors to keep mosquitoes outside. Use your air conditioning, if you have it.

Help reduce the number of mosquitoes around your home by emptying standing water from flowerpots, gutters, buckets, pool covers, pet water dishes, discarded tires and birdbaths on a regular basis.

Copyright 2016 WDRB Media. All rights reserved.