我认同这个思路。
回答: 他们决定把疫苗间隔时间延到84天的想法就是先把重症、病死率降下来再说。至于打了疫苗后能不能阻止感染或传染。这里科学家从一开始
由 southhill
于 2021-02-04 10:55:41
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