The state departments of Health and Environmental Protection have reported the early discovery of West Nile virus in mosquitoes in Berks, Dauphin and Luzerne counties, according to State Rep. Jim Cox (R-129). The first mosquito to test positive this year was in Exeter Township, Berks County, on May 3.
West Nile virus is spread by the bite of a mosquito that acquired the virus from the blood of an infected bird. The virus can cause encephalitis, an inflammation of the brain. Last year, six people were reported to have contracted West Nile virus in Pennsylvania.
The best way to prevent the spread of West Nile virus is to eliminate mosquito breeding areas. Mosquitoes lay their eggs in stagnant water around homes, weeds, tall grass, shrubbery and discarded tires.