同意当前疫苗对德尔塔的局限性。但是不能因此否定mRNA的技术路线。病毒变异了，疫苗没有改进，效果当然要打折扣

来源: 想长肉肉于 2021-08-26 07:19:42 [旧帖] [给我悄悄话] 本文已被阅读：次

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