The US is at risk of losing all its recent gains in the battle against Covid-19 as highly contagious variants take advantage of Americans getting lax with safety measures.
원문출처 : https://www.cnn.com/2021/03/01/health/us-coronavirus-monday/index.html
원문출처 : https://www.cnn.com/2021/03/01/health/us-coronavirus-monday/index.html