No such thing a few hundred yrs ago/ smallpox, measles

来源: 移花接木 于 2021-02-05 20:58:34 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (72 bytes)
回答: What kind of virus？Sounds like Ebola？ 由 beautifulwind 于 2021-02-05 18:41:30

Modern society already immuned, they didn't have antibody

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