Recommendation that people aged 2 and older wear masks on transportation. the cdc says masks continue to be an important tool for stopping the spread of covid-19. the court struck down the mandate on planes, trains and other public transit. the doj is appealing the rule but did not seek an injunction to keep the mandate in place while it awaits the decision. this is about preserving power to do so again down the road. authorities in beijing, meanwhile, have announced new measures to contain a growing outbreak of covid-19. officials in the city have banned dining in restaurants and have ordered entertainment venues to close. residents must also show proof of a negative covid test before entering the public spaces. beijing yesterday reported 53 new cases that s a relatively low number compared to shanghai which has reported more than 5,000 new cases and is now in its fifth week of total lockdown. joining us now to talk all things pandemic infeck shuz diseases physician founding