Moderna Vaccine Remains Effective Six Months After Second Dose Covid Shot Gets Fda Approval For Kids 6 To 11 Years
这结果说明， 牛津疫苗对于新冠主要感染的老年人群来说是个有利的好消息，并且相比较 moderna疫苗大约28镑、辉瑞疫苗也需要15镑 的价格来说， 牛津疫苗每剂只需2镑， 再结合.
Moderna says its COVID19 shot 93 effective six months after second
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