那禽流感和豬流感是咋回事？

來源: AtlasShrug 於 2014-09-26 13:18:17 [] [舊帖] [給我悄悄話] 閱讀數 : (0 bytes)
回答: Viruses don't cross species boundary. 由 ZoyaWashington 於 2014-09-26 13:15:34

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• Those are due to mutations in avian and swine flu viruses. -ZoyaWashington- ♀ 給 ZoyaWashington 發送悄悄話 (27 bytes) () 09/26/2014 postreply 18:55:31

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