On Friday evening, the Allegheny County Health Department announced that West Nile Virus had been found in mosquito samples across six Pittsburgh neighborhoods.

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

Mosquitoes in two Weld County zones have tested positive for West Nile Virus, though no human cases have been reported yet. Health officials urge precautions as mosquito activity increases with the summer heat.