疫情开始时好像有这个印象,说疫苗开发至少需要两年。
是不是所有疫苗都要经历至少两年的考验才能被正式批准?
回答: 27 Experts Launch Citizen Petition Demanding FDA ‘Slow Down and
由 BiologistMom
于 2021-06-17 17:24:36
疫情开始时好像有这个印象,说疫苗开发至少需要两年。
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