@dave_m_ I can't account for what any local area does, but a lot dropped mandates when cases were low and brought them back in December when cases rose again.
CDC recommends universal masking when cases are substantial or high.
Probably should be more focused on high-risk venues too.
@dave_m_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _。
疾病控制与预防中心建议在病例较多或发病率较高的情况下进行普遍掩盖。
可能也应该更加关注高风险的场馆。