我認同這個思路。
回答: 他們決定把疫苗間隔時間延到84天的想法就是先把重症、病死率降下來再說。至於打了疫苗後能不能阻止感染或傳染。這裏科學家從一開始
由 southhill
於 2021-02-04 10:55:41
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