憂憂，美國的CDC有明確規定，兩劑加強針之間應間隔至少4個月。

來源: nearby 於 2022-08-13 19:16:32 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

而且第二劑加強針隻建議給50歲以上的人

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