As the number of Covid-19 cases grows in the United States, experts wonder if the country fully understands the current threat from the pandemic.
원문출처 : https://www.cnn.com/2022/04/18/health/covid-at-home-testing-data/index.html
원문출처 : https://www.cnn.com/2022/04/18/health/covid-at-home-testing-data/index.html