就是你有心脏病,糖尿病,免疫系统弱的证明
https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-with-medical-conditions.html
CDC有一个list,你自己去看你的医生能够给你写什么。
https://www.cdc.gov/coronavirus/2019-ncov/need-extra-precautions/people-with-medical-conditions.html
CDC有一个list,你自己去看你的医生能够给你写什么。