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| H1N1 Man Made? |
Nobody knows where the next pandemic flu will come from. Now, scientists have evidence that influenza strains common in commercial pig herds can mutate in a way that would allow them to infect humans and spread easily among them. The study, published Monday in Proceedings of the National Academy of Sciences, found that a flu strain isolated from pigs was able to spread among ferrets and killed them with ease. Ferrets are commonly used in flu studies because they have human-like responses to flu.
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