我也是, 但覺得更多的原因是年齡變大, 自身的免疫力下降。再加上疫苗有效率並不高

來源: tidytiger 於 2018-12-01 17:45:18 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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