Hi there,

I was pretty impressed to learn, that the "Center for Disease Control" has considered the "Zombie-Apocalypse" a theoretically valid threat to humanity, which is why they have published material about the threat about it and how to deal with it. Enjoy it:

http://www.cdc.gov/phpr/zombies.htm
and
http://www.cdc.gov/phpr/zombies_novella.htm

All the best!
Liam