Bob Frey has a good article on this already:
Pennsylvania Game Commission officials announced Friday that three deer taken by hunters during the 2012 firearms deer season tested positive for the disease. Two of the animals were killed in Blair County and the third in Bedford County.
All of the deer came from outside the disease management zone established by the commission after wasting disease was discovered in a farm-raised deer in Adams County last October. .......
The commission prioritized the testing of deer based on location.
A total of 2,089 hunter-killed deer from within the disease management zone were tested first, followed by hunter-killed deer from elsewhere across the state's southern tier.......
The commission knows generally where the three CWD-positive deer were taken. Hunters who kill a deer have to list the township in which they got it on their back tag and report card. Wildlife conservation officers are trying to narrow things down further, though.
“Now, we're looking out there, on the ground, to find out as exactly as we can where those deer were taken. We're trying to be as precise as we can,” Neville said......
Wasting disease has existed in Maryland's wild herd — just 10 miles over the state line from Bedford County — for a couple of years. Game Commission veterinarian Walt Cottrell said previously that it would be possible for sick deer to wander back and forth across that boundary.
But a couple of the CWD-positive deer discovered in Pennsylvania are believed to have been taken within 10 miles of where an escaped captive deer known as Purple 4 was roaming the woods of Huntingdon County last fall. ..
....It was tested; results labeled it was “not detected” for CWD.
That doesn't mean the deer didn't have the disease, officials said then. It was just not confirmed.....
There were reportedly several other farm-raised deer that escaped into the wild in that part of the state — home to one of the densest concentrations of deer farms in Pennsylvania — over the past 12 to 18 months,.....
But whether those farms and their escapees might be a factor in the disease showing up in the wild, Neville would not say.
“I can't comment on the obvious coincidences,” he said.
In the meantime, the members of the state's Interagency CWD Task Force were meeting Friday to discuss the discovery of the disease and how to handle it.
The Game Commission will follow up with a press conference Monday afternoon at its Harrisburg headquarters. It also is planning to hold a public meeting on wasting disease somewhere in the Blair/Bedford county area later this month. Its time, place and location likely will be announced later next week.