A new study finds that the way swine flu multiplies in the respiratory system is more severe than seasonal flu. Tests in monkeys, mice and ferrets show that the swine flu thrives all over the respiratory system, including the lungs, instead of staying in the head like seasonal flu. The findings were released Monday by the journal Nature. The study’s researcher, Yoshishiro Kawaoka of the University of Wisconsin, told the Associated Press that he is more concerned about swine flu because of these results.
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