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Health Department News

Posted on: June 23, 2021

Mosquitoes Test Positive for West Nile Virus in Lake County

A mosquito “pool” (batch of mosquitoes) sampled on June 16, 2021 in Lake Bluff, Illinois has tested positive for West Nile virus. This mosquito pool is the first confirmed indicator of West Nile virus presence in Lake County in 2021.

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