WAYNESBORO, Pa. -- In 2005 and 2006, Franklin County held the dubious honor of having more mosquito samples test positive for West Nile virus than any other county in Pennsylvania. It was a state leader for positive samples in other years.
That changed in 2010.
As of Tuesday afternoon, the Pennsylvania Department of Environmental Protection had no reports of West Nile virus-positive mosquitos in Franklin County. Its data shows 265 samples were tested.
The county posted 68 positive samples in 2005, 65 in 2006, seven in 2007 and 34 in 2008.
The varying numbers can be attributed to several factors, one of which is that county coordinators learned in the worst years where the diseased mosquitos are, DEP spokesman John Repetz said.
"Because there had been so much activity in Franklin County, the staff has a good handle on specific areas that are historically breeding areas," Repetz said.