现有的疫苗都没有达到对Omicron新冠变体50%的防疫率。这是FDA能批准疫苗正式上市的最低要求。

来源: Ron47 于 2022-01-18 08:11:38 [旧帖] [给我悄悄话] 本文已被阅读：次

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