The Allegheny County Health Department on Monday confirmed that additional mosquito samples have tested positive for West Nile Virus. The health department will treat areas for mosquitoes in the communities of Hazelwood,

There have been three human cases of West Nile Virus in California this year, with one fatal case, according to the California Department of Public Health.

A mosquito sample collected last week on North Military Highway in Norfolk has tested positive for the West Nile virus, the first such positive test in the city this season, according to the Norfolk Department of Public Health.