谢谢！查了一下，针对两针Pfizer的只提到一种剂量

来源: p-b 于 2021-07-30 14:01:21 [] [旧帖] [给我悄悄话] 阅读数 : (263 bytes)

The vaccine is given by an injection (0.3 mL) into the muscle of the arm. For the vaccine to work best, you need to get 2 doses: a single dose and then a second dose 21 days later.

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