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The original item was published from 9/19/2025 4:10:00 PM to 10/4/2025 12:00:00 AM.
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Health Department
Posted on: September 19, 2025[ARCHIVED] Dayton and Naplate Mosquitoes Test Positive for West Nile Virus
The LaSalle County Health Department received confirmation that mosquitoes from
Dayton and Naplate tested positive for West Nile virus. The mosquitoes were collected on September 16th and 17th and Environmental Health staff
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