West Nile activity reports in 10 more DuPage towns

Thu July 29, 2010

DUPAGE COUNTY--Surveillance by the DuPage County Health Department has found 10 additional positive mosquito batches that tested positive for West Nile virus in Clarendon Hills, Darien, Bloomingdale, Roselle, Elmhurst, Bensenville, Lombard, Warrenville, Wheaton and West Chicago.

The increase in numbers was expected and will continue as we likely will move into hot and dry weather following recent flooding. The Health Department advises residents to continue normal outdoor activities, but take personal precautions, such as wearing long sleeves and repellent if outdoors near areas where mosquitoes are present. Also, especially due to recent flooding, it is important to drain any standing water around your home.

 To check your town for West Nile virus updates and get additional information, click on the Health Department's surveillance map at www.dupagehealth.org/wnv-map

DuPage County residents with questions about West Nile virus may call the health department at (630) 682-7400. From now through Oct. 15, the health department will be collecting freshly-dead perching birds (such as crows or blue jays) in DuPage County for WNV testing, provided the birds do not show signs of decay or trauma and we are able to pick them up in time to be shipped to the state laboratory by the end of the business day on Thursdays. To report a dead bird call (630) 682-7400.

West Nile virus is transmitted through the bite of a mosquito that has picked up the virus by feeding on an infected bird.  Most people with the virus have no clinical symptoms of illness, but some may become ill three to 15 days after the bite of an infected mosquito. 

Only about two people in 10 who are bitten by an infected mosquito will experience any illness. Illness from West Nile is usually mild and includes fever, headache and body aches, but serious illness, such as encephalitis and meningitis, and death are possible.

The best way to prevent West Nile disease or any other mosquito-borne illness is to reduce the number of mosquitoes around your home and to take personal precautions to avoid mosquito bites.  Precautions include:

  • Avoid being outdoors when mosquitoes are most active, especially between dusk and dawn.
  • When outdoors, wear shoes and socks, long pants and a long-sleeved shirt, and apply insect repellent that includes DEET, picaridin, oil of lemon eucalyptus or IR 3535 according to label instructions. Consult a physician before using repellents on infants.
  • Make sure doors and windows have tight-fitting screens. Repair or replace screens that have tears or other openings. Try to keep doors and windows shut, especially at night.
  • Eliminate all sources of standing water that can support mosquito breeding, including water in bird baths, ponds, flowerpots, wading pools, old tires and any other receptacles. In communities where there are organized mosquito control programs, contact your municipal government to report areas of stagnant water in roadside ditches, flooded yards and similar locations that may produce mosquitoes.

Additional information about West Nile virus can be found at the health department's web site at www.dupagehealth.org or the Illinois Department of Public Health's Web site at www.idph.state.il.us/envhealth/wnv.htm.