Although a federal judge struck down the Biden administration's mask mandate for public transportation Monday, some experts say you don't want to throw out your mask just yet. No matter the form of public transportation -- planes, trains, trams, subways, buses or even rideshares -- good ventilation can help reduce the spread of Covid-19, but masks work best.


원문출처 : https://www.cnn.com/2022/04/20/health/ventilation-public-transportation-covid-19/index.html