The Biden administration will extend existing requirements for travelers to wear masks on airplanes, buses, trains and boats, as well as in airports and other transportation hubs, through March to address concerns over the Omicron coronavirus variant.
원문출처 : https://www.cnn.com/2021/12/01/politics/transportation-mask-mandate-extension-biden/index.html
원문출처 : https://www.cnn.com/2021/12/01/politics/transportation-mask-mandate-extension-biden/index.html