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Just Small Genetic Tweaks To Chinese Bird Flu Virus Could Fuel A Human Pandemic

Enlarge this image A sometimes lethal strain of H7N9 bird flu that has infected about 1,500 people in China doesn’t spread easily among humans — yet. But research published Thursday suggests just a few genetic mutations might be enough to make it quite contagious. Pasieka/Science Source hide caption toggle caption Pasieka/Science Source A study published Thursday shows how a bird flu virus that’s sickening and killing people in China could mutate to potentially become more contagious. Just three changes could be enough to do the trick, scientists report in the…

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