Swine Flu

Well it looks like this could be the outbreak. The all-out, 28 days later, apocalypse, end-of-the-World curse that will finish it all. 

As soon as the first zombie gets off a plane and starts eating brains, we're officially finished. (Unless you're in a nuclear bunker with tinned beans and Jacobs crackers. 

Lock yourself, with your mates in the Winchester and some 'hog lumps' before the Mexican zombies get you.