The Forest Preserve District began testing forest preserves for West Nile virus on June 3 and concluded testing on Oct. 18.
Here are a few preliminary numbers from the monitoring season:
- 2,800 adult Culex mosquitoes collected and tested for WNV in 112 batches/pools from 10 trap sites
- 112 RAMP tests run for WNV, 10 positive and 102 negative
- 1st positive WNV test on 6/28/24, last positive WNV test on 9/5/24
- 7 out of 10 adult trap sites tested positive at least once, 3 sites tested positive twice
- Preserves with at least one WNV positive test: Maple Meadows (x2), Waterfall Glen, Green Meadows (x2), Burlington Park (x2), Pratt’s Wayne Woods, Winfield Mounds, Churchill Woods
- Preserves with no positive WNV tests: Hidden Lake, Greene Valley, Herrick Lake
DuPage County Health Department Surveillance Maps
Illinois Department of Public Health West Nile Virus Surveillance Data
