Epidemiologists today worry a lot about swine flu. But earlier this year, Philip Munz got interested in a more devastating possibility: an outbreak of zombies. A graduate student at Carleton University in Ottawa, he was watching a lot of movies about the undead and realized that zombification could be regarded as a classic paradigm of infectious spread: people get bitten by zombies, after which they turn into zombies themselves and start biting others. So Munz decided to use the tools of epidemiology to answer a sobering public-health question: could humanity survive a zombie outbreak?
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