It’s still early in the season, but some of the first positive test results are popping up for West Nile virus from mosquitoes.
The Fairfax County Health Department reports it has detected the virus in three of 780 mosquito pools.
West Nile virus has been detected in Prince William County, too. The Prince William Health District says mosquitoes at the Belmont Pump Station in Woodbridge, Va., collected July 9 have tested positive for the virus. The area where positive mosquitoes were found was treated to kill adult mosquitoes and breeding larvae.