This type of attack is rare, only the second person ever attacked by a coyote in the state of Massachusetts:
BARNSTABLE, Mass. — A woman is receiving treatment after being attacked by a rabid coyote in her yard. Cindy Parker-Kelley heard her Norwegian elkhound barking as she was getting ready for work Thursday morning. When she went out to check on her dog, she saw the coyote.
She reached out to shoo it away, and the wild animal clamped its jaws on her left wrist.
Parker-Kelley's husband, David Kelley, heard her screams and rushed to the back yard in his underwear.
"The coyote was hanging off my wife's arm," Kelley told The Cape Cod Times in a story posted on its Web site.
Some explain the Dracula legend, by saying vampires were suffering from rabies.
Bitten by rabid coyote [The Cape Cod Times, Feb. 18, 2005]
Experts surprised, but not alarmed [The Cape Cod Times, Feb. 18, 2005]
Rabid coyote attacks Cape Cod woman [Boston Globe, Feb. 18, 2005]
Rabid Coyote Attacks Cape Cod Woman [Crime Library]
Rabies Information [CDC]
Rabies - the Vampire's kiss [BBC]
Could rabies explain the vampire legend? [skeptictank.org]