The US Centers for Disease Control and Prevention on Thursday abruptly changed its guidance on masks and social distancing, saying people who are fully vaccinated against Covid-19 don't have to wear masks indoors, and they don't have to keep their distance from others.
원문출처 : https://www.cnn.com/2021/05/13/health/covid-cdc-mask-guidance-vaccinated-wellness/index.html
원문출처 : https://www.cnn.com/2021/05/13/health/covid-cdc-mask-guidance-vaccinated-wellness/index.html