READING — Investigators Sunday found three more mosquitoes infected with the West Nile virus in Berks County, two in Reading and one in Spring Township.
Last week mosquito and bird testing turned up West Nile in 13 counties in southeastern Pennsylvania.
Newer testing over the weekend turned up 13 infected mosquitoes in seven counties.
West Nile virus is most commonly spread to people by the bite of an infected mosquito. There are no vaccines to prevent or medications to treat the virus but most people who contract it don't experience any symptoms. However, in about one in 150 cases victims develop a serious, sometimes fatal illness.
You can reduce your risk of contracting the virus by avoiding damp areas or standing water where mosquitoes breed and by using insect repellent and wearing long-sleeved shirts and long pants to prevent mosquito bites.