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The original item was published from 9/4/2025 8:14:43 AM to 9/19/2025 12:00:01 AM.
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Health Department
Posted on: September 4, 2025[ARCHIVED] Seneca Mosquitoes Test Positive
The LaSalle County Health Department received confirmation that mosquitoes from
Seneca tested positive for West Nile virus. The mosquitoes were collected on September 2nd and Environmental Health staff conducted the confirmatory test
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