Mosquitoes collected by the Allegheny County Health Department tested positive for West Nile virus in six areas Tuesday.

Two mosquito test samples taken from Hyde Park and West Roxbury have tested positive for West Nile Virus, the Boston Public ...

Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West ...

Mosquitoes are testing positive for the West Nile virus in Louisville's Highlands and Tyler Park neighborhoods.

Mosquitoes in two areas of Weld County have tested positive for West Nile virus, though no human cases have yet been reported ...

Oregon has no reports so far of people contracting the virus. But it's still wise to cover up and prevent bites, health officials say.

Public health officials are warning residents after mosquito samples from two Boston neighborhoods have tested positive for ...

On the heels of Mobile County’s second case of the year of West Nile virus, health authorities reported Friday that ...

Mosquitoes carrying West Nile virus has been confirmed in St. Joesph CountyAccording to Health officials, the positive ...

A mosquito sample collected in Barnstable has tested positive for West Nile virus -- here's what health officials want you to ...

The Shasta Mosquito and Vector Control District (SMVCD) has confirmed the first mosquito sample to test positive for West ...