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An influenza virus that only infects pigs could very quickly lead to a dangerous flu pandemic in humans, a recent study reports. Results of an experiment in ferrets, a model for flu in humans, suggest that a swine flu virus can mutate into a contagious and fatal disease within 10 days.
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Livestock exhibits are a popular part of farm country fairs, but they're coming with a warning this year: Don't pet the pigs. And wash your hands well…