Pfizer CEO：需要打第四针！

来源: 于 2022-03-13 15:10:06 [旧帖] [给我悄悄话] 本文已被阅读：次

A 4th dose of Covid-19 vaccine will be needed, Pfizer's CEO says, but the
company is working on a shot to handle all variants

 

https://www.cnn.com/2022/03/13/health/pfizer-vaccine-4th-dose/index.html