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Environmental Health
West Nile Virus Protection

Ways to Prevent West Nile Virus

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Avoid Mosquito Bites to Avoid Infection

When dealing with West Nile Virus, prevention is your best bet. Fighting mosquito bites reduces your risk of getting this disease, along with others that mosquitoes can carry. Take the commonsense steps below to reduce your risk:

  • avoid bites and illness;
  • clean out the mosquitoes from the places wher you work and play;
  • help your community control the disease.

Something to remember: The chance that any one person is going to become ill from a single mosquito bite remains low. The risk of severe illness and death is highest for people over 50 years old, although people of all ages can become ill.

Avoid Mosquito Bites
Use Insect Repellent
on exposed skin when you go outdoors. Use an EPA-registered insect repellent such as those with DEET, picaridin or oil of lemon eucalyptus. Even a short time being outdoors can be long enough to get a mosquito bite. For details on when and how to apply repellent, see Insect Repellent.
Clothing Can Health Reduce Mosquito Bites
When weather permits, wear long-sleeves, long pants and socks when outdoors. Mosquitoes may bite through thin clothing, so spraying clothes with repellant 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.
Get double protection:
wear long sleeves during peak mosquito biting hours, and spray DEET repellent directly onto your clothes.

Be Aware of Peak Mosquito Hours
The hours from dusk to dawn are peak biting times for many species of mosquitoes. Take extra care to use repellent and protective clothing during evening and early morning or consider avoiding outdoor activities during these times.

Mosquito-Proof Your Home
Drain Standing Water
Mosquitoes lay their eggs in standing water. Limit the number of places around your home for mosquitoes to breed by getting rid of items that hold water. Click here to find out how to eliminate standing water.

Install or Repair Screens
Some mosquitoes like to come indoors. Keep them outside by having well-fitting screens on both windows and doors. Offer to help neighbors whose screens might be in bad shape.

Help Your Community

Report Dead Birds to Local Authorities
Dead birds may be a sign that West Nile Virus is circulating between birds and the mosquitoes in an area. Over 130 species of birds are known to have been infected with West Nile Virus, though not all infected birds will die. It's important to remember that birds die from many other causes besides West Nile Virus.

By reporting dead birds to state and local health departments, you can play an important role in monitoring West Nile Virus. Click here to find information about identifying and reporting dead birds in your area or contact the Kendall County Health Department at (630) 553-9100 ext. 8026.


Clean Up
Mosquito breeding sites can be anywhere. Neighborhood clean up days can be organized by civic or youth organizations to pick up containers from vacant lots and parks, and to encourage people to keep their yards free of standing water. Mosquitoes don't care about fences, so it's important to control breeding sites throughout the neighborhood.


Additional Information about West Nile Virus can be found at IDPH's website or you can call the West Nile Virus Hotline at 1-866-369-9710 Monday through Friday from 8:00am to 5:00pm.