I think KC just made a huge mistake, an Anachronism.

Actually I have been curious about this for a long time. At first I thought the first wave of zombies were escapes from a goverment lab, but ground zero suggests it was more of a viral type situation. Since the Zombies need to circulate blood it doesn't make sense that it was just wounds that didn't bleed. Since the special zombies have had strong growths or mutations that the zombies that orginated from ground zero had the ability to isolate blood flow to the core of the body, like a sea mammal.

I am going to vote that KC screwed up just to see if I rattle some cages