Is the incident linked in details further proof of the impending zombie apocalypse. Or is it something else?

There have been a couple of stories in the news lately about people attacking victims and eating their flesh
This is the most recent
http://www.huffingtonpost.com/2012/06/08/lowpel-davis-bit-arm-wig-store-owner-spat-flesh-connecticut_n_1581176.html?ir=Weird+News&ref=topbar
Is Lowpel Davis actually a zombie? Or was she simply committed to getting a free wig?