Osterholm: Double masking could lower your protection against COVID-19

Dr. Anthony Fauci
WASHINGTON, DC - NOVEMBER 19: Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases look on during a White House Coronavirus Task Force press briefing in the James Brady Press Briefing Room at the White House on November 19, 2020 in Washington, DC. The White House held its first Coronavirus Task Force briefing in months as cases of COVID-19 are surging across the country ahead of the Thanksgiving holiday. Photo credit Photo by Tasos Katopodis/Getty Images