看R0，傳染率，理論上有一個還在傳染，都不行。現代社會流動性那麽高，帶毒者要不要出差啊

來源: phobos 於 2020-04-10 17:02:00 [舊帖] [給我悄悄話] 本文已被閱讀：次

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