Michael Osterholm, who was a member of the Biden Transition COVID-19 Advisory Board, gave a second opinion after Dr. Anthony Fauci said last week that doubling up on face masks “likely” provides more protection than wearing just one mask. "When we talk about double masking, remember what we're really talking about is just trying to prevent the virus from being excreted by me into the air or me inhaling the virus from someone else in the air, and it's both a function of face fit and face filtration," Osterholm said during an interview Sunday on NBC's Meet the Press. If...