打第4针辉瑞Covid Vaccine有用吗,有风险吗?

来源: 于 2022-07-13 20:03:34 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

I want to travel to Europe for vacation. I am thinking about getting my 4th Covid vaccine taken. Does it help? Is it safe to take it. I had bad reaction to it  when taking the 3rd dose.