All the Different Animal Flus You Could Possibly Catch

The internet is often awash with news of new types of flu—spread from pigs, birds and all kinds of other creatures—but it's not easy to tell which ones you should really be worried about. Fortunately, this visualization explains exactly which strains you can pick up, and just how dangerous they are. » 4/10/13 8:42am 4/10/13 8:42am