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Summary: After a new strand of bird flu previously unseen in humans killed 17 of the 87 people it has infected, Chinese officials are looking into the possibility of human-to-human transmission of the H7N9 strain.
Summary: After a new strand of bird flu previously unseen in humans killed 17 of the 87 people it has infected, Chinese officials are looking into the possibility of human-to-human transmission of the H7N9 strain.