谢谢！查了一下，针对两针Pfizer的只提到一种剂量

来源: 于 2021-07-30 14:01:21 [旧帖] [给我悄悄话] 本文已被阅读：次

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.