After reading a book called "The Zombie Survival Guide" by Max Brooks (The title might not sound convinsable, but he does explain in the beginning that zombies are real, not in opinion, but fact) , Max Brooks has convinced me that zombies are real.
The Disease of zombies is called "Solinum".
The book is really interesting and it really is... well, a very well thought out book.
(Please do not flame topic)