CDC

The Center for Disease Control and Prevention has given the all clear on romaine lettuce. Any lettuce being sold now and not from Yuma, Arizona thus it's unlikely to be carry E. coli bacteria.

So in getting us prepared for anything... you know... Tornadoes, Floods... Zombie Apocalypse?!?! the CDC has issued a list of instructions for preparing for EVERY possible emergency situation. EVEN a Zombie Apocalypse!
...but where do zombies come from and why do they love eating brains so much...