Last week, the US Centers for Disease Control and Prevention relaxed its rules on face coverings, issuing new guidelines stating that vaccinated Americans can safely drop their masks when outdoors, except in certain crowded settings and venues.
원문출처 : https://www.cnn.com/2021/05/04/opinions/americans-confused-and-comforted-by-masks-drexler/index.html
원문출처 : https://www.cnn.com/2021/05/04/opinions/americans-confused-and-comforted-by-masks-drexler/index.html