2021 Weekly Mosquito Monitoring Report
Week of Sept. 20, 2021
This week Forest Preserve District staff collected 0 positive West Nile virus samples from forest preserves in DuPage County. This brings the total number of positive West Nile virus sample(s) for the 2021 season to 33. District staff began sampling for the presence of West Nile virus on June 1, 2021.
Currently, the District is aware of 154 positive mosquito samples in DuPage County, 0 of which were found on District property this week. To date the DuPage County Health Department has reported 5 positive human cases for DuPage County. The DuPage County Health Department provides an interactive West Nile virus case map (link).
As of Sept. 24, 2021, the Illinois Department of Public Health has reported 24 human cases, 0 human deaths, 24 positive birds, and 2,413 positive mosquito batches in Illinois. See the latest up-to-date IDPH mosquito surveillance data (link).
Fight the Bite
Below are some simple, common sense precautions people can take to avoid mosquito bites and protect themselves against West Nile virus:
1. Avoid being outdoors when mosquitoes are most active, especially between dusk and dawn.
2. 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.
3. 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.
4. 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 areas outside of Forest Preserve property, contact your municipal government to report stagnant water in roadside ditches, flooded yards and similar locations that may produce mosquitoes.
5. Public health officials believe that a hot, dry summer could increase mosquito activity and the risk of disease from West Nile virus.
For more tips, visit: