那禽流感和猪流感是咋回事？

来源: AtlasShrug 于 2014-09-26 13:18:17 [] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)
回答: Viruses don't cross species boundary. 由 ZoyaWashington 于 2014-09-26 13:15:34

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

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