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,

The disease causes serious illnesses in about 1 in 150 infected people, and can prove fatal. No human cases have been reported in Pennsylvania or New Jersey this year.

After mosquito samples tested positive for West Nile Virus, the Allegheny County Health Department announced today that seven neighborhoods will be treated this week. On Thursday from 8 to 11 p.m., residents in the Hazelwood,