"Some have speculated that the cannibalism (zombieism?) is being caused by a virus,
others like Forbes contributor Alice Walton have attributed it to synthetic drugs.
Cannibal stories have popped up not only in Miami (man's face ate off), but other related stories with zombie/cannibal overtones have cropped up around the world including:
*A story in Maryland where a man has been charged with killing a man and eating his brain’s and heart.
*A story in Canada about a porn star turned murderer and cannibal who is currently on the run from police.
*A story in Sweden, where a man is alleged to have cut off his wife’s lips and eaten them. And a separate story where a woman is alleged to have bitten her boyfriend’s penis.
*A story in New York where a man chewed the ear off of of another man at a Staten Island restaurant.
*A story in New Jersey where a man stabbed himself repeatedly in front of police and then threw his skin and intestines at them."
http://www.forbes.com/sites/gregorymcneal/2012/06/01/zombie-cannibal-apocalypse-cdc-weighs-in-but-is-abcs-castle-to-blame/