The original item was published from 7/23/2025 3:26:00 PM to 8/1/2025 12:00:00 AM.

News Flash

Health Department

Posted on: July 23, 2025

[ARCHIVED] Mosquitoes Test Positive for West Nile Virus

The LaSalle County Health Department received confirmation that mosquitoes from Marseilles tested positive for West Nile virus. The mosquitoes were collected on July 22nd and Environmental Health staff conducted the confirmatory test on the mosquitoes at

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