As health experts worry about a Covid-19 resurgence, an influential forecasting team said the country did not make significant progress against the virus this week. And it warned about Americans taking fewer safety precautions.
원문출처 : https://www.cnn.com/2021/04/17/health/us-coronavirus-saturday/index.html
원문출처 : https://www.cnn.com/2021/04/17/health/us-coronavirus-saturday/index.html