My first guess is that it would be a virus of some sort, but I have read a number of articles about various parasites that take over their hosts and effectively 'zombify' them. I'm still leaning towards either a sudden mutated virus (or a manmade one).
Zombie (Mutated Virus) Group (NEW Posting Feature - BETA - In Development)
1386 members
You must meet these requirements before being able to post:
• You must have a profile photo.
• You must have a description.
• You must have joined for more than 24 hours.
About
A group for people researching the mutated virus responsible for the zombie apocalypse, and how to survive it.
You must meet these requirements before being able to post:
• You must have a profile photo.
• You must have a description.
• You must have joined for more than 24 hours.