According to test results received by the health unit on Tuesday, mosquitoes collected from a trap located in Wyoming on August 1 tested positive for the virus.
Most people infected with the virus have no symptoms at all, or they have flu-like symptoms such as fever, headache, body aches and fatigue. Test results are reported once a week by the Connecticut Agricultural Experiment Station.
West Nile virus is a disease that is spread through the bite of an infected mosquito.
The Allegheny County Health Department will treat for mosquitoes in several Pittsburgh neighborhoods where they have tested positive for West Nile Virus.
Cover children's playpens or baby carriages with netting when outdoors. Mosquitoes only need a few tablespoons of water to lay eggs.
The first probable case of the virus in 2018 was reported in Allegheny County in late July. Of the 26 Dallas County residents infected a year ago, two died from the mosquito-borne illness.
Use effective insect repellent such as DEET or Picaridin. Prior to past year, there had been no positive human cases since in the region since 2006.