抗體消失快,他們早就知道啊.當初疫苗他們應該設計打3針,如乙肝疫苗打3針.估計後悔莫及.

來源: 5181 於 2022-08-27 16:16:01 [舊帖] [給我悄悄話] 本文已被閱讀：次

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