More than 1 million people have received their first shot of a Covid-19 vaccine, but an influential coronavirus model projects the US death toll will climb well over a half million, topping 567,000 by April 1.
원문출처 : https://www.cnn.com/2020/12/24/us/us-coronavirus-thursday/index.html
원문출처 : https://www.cnn.com/2020/12/24/us/us-coronavirus-thursday/index.html