The US Centers for Disease Control and Prevention (CDC) today recommended universal mask use in all indoor settings, except when people are in their own homes, as part of a multipronged strategy to slow the nation's surge and speed economic recovery.The advice comes a day after the nation recorded new single-day highs for cases and deaths, as well as a record number of Americans hospitalized, and marks the first time the CDC has recommended universal mask use indoors.Steps to slow high-transmission phaseThe CDC published its advice, which laid out evidence-based strategies that also included physical distancing and stepping up testing, diagnosis, and isolation, in an early online report in Morbidity and Mortality Weekly Report.It said with