August 3, 2006
News media calls to David Hass at (630) 682-7979, ext. 7374.

DuPage County Health Department reports Surge in mosquitoes testing positive with West Nile virus

Residents urged to take precautions

Surveillance by the DuPage County Health Department has found a sharp increase in the number of positive mosquitoes with West Nile virus in the past week. Environmental Health Services says that 57 positive mosquito batches have been reported in 2006, with 41 positive tests coming in the past week. One bird has also tested positive with West Nile virus.

EHS says there were 17 positives out of 39 tests on July 28 and 24 positives out of 40 tests on Aug. 1. Mosquitoes testing positive with West Nile virus have increased throughout the state in recent days. The health department reminds DuPage County residents to take personal precautions to prevent this mosquito-borne disease.

The health department began West Nile virus surveillance of mosquitoes in 70 DuPage County locations in May. The health department reported 255 positive mosquito batches in 2005.

West Nile virus is transmitted through the bite of a mosquito that has picked up the virus by feeding on an infected bird; human illness occurs when an infected mosquito bites a person. Most people infected with WNV have no symptoms of illness and never become ill. But some may become ill three days to 15 days following a bite.

Symptoms can include fever, headache and body aches. People over the age of 50 and those with chronic diseases such as heart disease or cancer may be more at-risk for meningitis or encephalitis, two life-threatening diseases. But, people of any age can contract West Nile illness.

The health department urges residents to “Fight the Bite” and make sure they are properly protected:

• Apply mosquito repellent containing 20-35 percent DEET primarily to clothing. Concentrations of 10 percent or less are indicated for children. Use sparingly on exposed skin. ·
• Limit time outdoors when mosquito activity is heaviest (dusk through dawn)
• Keep skin covered if outdoors between dusk and dawn. Wear long-sleeved shirts, pants and socks. ·
• Be sure screens in homes are intact and tight fitting to prevent entry of insects. 
• Keep gutters around home cleared of debris and in good repair.
• Eliminate any containers that may hold water from around the outside of the home. Water that is allowed to stagnate for three or four days becomes a breeding ground for mosquitoes.
• If your municipality has a mosquito control program, report areas of standing water to that agency.

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