Recent tests of mosquito traps at Seager Park and Springhill Park have returned one instance of West Nile virus at each location.
The city of Naperville Wednesday reported the results at the parks. Seager is at 1163 Plank Road and Springhill is at 703 Springhill Circle.
City crews will spray the affected areas through Aug. 16 and the surrounding catch basins will be retreated. Traps will be retested the week of Aug. 19.
Earlier in the summer both parks were treated after mosquitoes with West Nile were found in traps there.
West Nile virus is a mosquito-borne virus that is transmitted through the bite of a mosquito that has picked up the virus by feeding on an infected bird. Most people who are infected with the West Nile virus have no symptoms or experience very mild symptoms three to 14 days after the bite of an infected mosquito. Mild symptoms include a fever, headache and body aches, occasionally with a skin rash on the trunk of the body and swollen lymph glands.
Less than 1 percent of infected people with West Nile virus will develop severe symptoms. These symptoms include headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness and paralysis. Persons older than 50 years of age and persons with weak immune systems have the highest risk of severe disease, city officials said.
There are some common sense, preventative measures that park patrons can take to protect themselves from mosquito bites, Park District officials said.
According to the Centers for Disease Control:
Apply insect repellent to exposed skin. Generally, the more active ingredient a repellent contains the longer it can protect you from mosquito bites. A higher percentage of active ingredient in a repellent does not mean that your protection is better—just that it will last longer. Click here for more on insect repellent active ingredients. Choose a repellent that provides protection for the amount of time that you will be outdoors.
Spray clothing with repellents containing permethrin or another EPA-registered repellent since mosquitoes may bite through thin clothing. Do not apply repellents containing permethrin directly to exposed skin. Do not apply repellent to skin under your clothing.
When weather permits, wear long-sleeved shirts and long pants whenever you are outdoors.
Place mosquito netting over infant carriers when you are outdoors with infants.
Consider staying indoors at dawn, dusk, and in the early evening, which are peak mosquito biting times.