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Mosquito Management

Learn About Our Mosquito Management Program

 

2025 Weekly Mosquito Monitoring Report

Week of June 2

Positive Tests in DuPage Forest Preserves This Week

1

There was one positive West Nile virus mosquito test at Green Meadows this week.

Positive Test Location (PDF)

Positive Tests in DuPage Forest Preserves in 2025

1

There's been one positive West Nile virus mosquito test in the preserves in 2025.

Total Positive Tests in DuPage County in 2025

5

The DuPage County Health Department has reported a total of five positive West Nile virus mosquito tests for 2025.

DuPage County Surveillance Maps

Total Reported Human Cases in Illinois in 2025

0

The Illinois Department of Public Health has not reported any human cases in Illinois for 2025.

Zero Human Deaths

Zero Positive Birds

Zero Positive Horses or Other Animals

Zero Positive Mosquito Batches

Illinois West Nile Virus Numbers At A Glance

Fight the Bite

Here are some simple, common sense precautions people can take to avoid mosquito bites and protect themselves against West Nile virus:
  • 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 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.
  • Public health officials believe that a hot, dry summer could increase mosquito activity and the risk of disease from West Nile virus.