|Tad Arensmeier/Creative Commons|
Not a common occurrence in Pennsylvania, according to the article. The state is home to both the timber rattler and the Eastern massasauga; the former, a largish species of rattlesnake, would seem to be the culprit in this case, judging from range maps and its well-attested history as a dangerous snake. This man suffered an allergic reaction; the same bite would have had milder effects on most people.
Man dies after being bitten by rattlesnake while camping - WHP CBS 21 Harrisburg - Top Stories: "Authorities say a western Pennsylvania man died after he was bitten by a rattlesnake while sitting near a campfire.
Armstrong County Coroner Brian Myers says 39-year-old Russell Davis, of Freedom, Beaver County, was camping with his family Saturday in Weedville, Elk County. He was bitten shortly before midnight."
Thanks to Steve V. for the news tip.