From Inside Edition.

Andrew Nierer was hiking along a trail near his house in Pennsylvania when the aggressive bear started stalking him up the mountain. That’s when the bear started attacking him. Thankfully, Nierer’s neighbor Mike Bramich came to his rescue and shot the bear. Nierer was taken to the hospital. The bear’s aggressive behavior was described as "abnormal." It was later revealed the bear tested positive for rabies. Nierer is receiving a series of shots to prevent a rabies infection.