US officials are racing to vaccinate as many Americans as possible to beat another Covid-19 surge -- and doses are being administered at a record pace.
원문출처 : https://www.cnn.com/2021/04/13/health/us-coronavirus-tuesday/index.html
원문출처 : https://www.cnn.com/2021/04/13/health/us-coronavirus-tuesday/index.html