Despite warnings from public health officials, millions of Americans traveled over the Christmas holiday. The US Transportation Security Administration reported that nearly 1.3 million people passed through airport security checkpoints nationwide Sunday.
원문출처 : https://www.cnn.com/2020/12/29/health/quarantine-after-holiday-travel-covid-wellness/index.html
원문출처 : https://www.cnn.com/2020/12/29/health/quarantine-after-holiday-travel-covid-wellness/index.html