According to researchers at two Ottawa universities who modeled a zombie attack using biological assumptions based on popular zombie movies, “classic” slow-moving zombies could take over our cities in under a week. (The “nimble, intelligent creatures” would take a few days less I imagine.)
And while we can all laugh this one off and conclude that at best Zombie Risk would be in the upper corner or our heat map (Extremely Unlikely and Catastrophic), a zombie “plague” in fact resembles any sort of lethal, rapidly spreading infection.
Where are those H1N1 sort of risks on your heat maps?
You can read more about this at http://news.bbc.co.uk/2/hi/science/nature/8206280.stm