With the US now tallying more than 25 million Covid-19 cases, experts say now is the time to double down on safety measures and speed up vaccine rollouts before a variant further surges infections.
원문출처 : https://www.cnn.com/2021/01/25/health/us-coronavirus-monday/index.html
원문출처 : https://www.cnn.com/2021/01/25/health/us-coronavirus-monday/index.html