Mask Wearing for COVID-19 Prevention—Summary of CDC Data

Natural experiments comparing coronavirus spread on ships and in hair salons with vs without face masks point to the importance of wearing masks for curbing SARS-CoV-2 spread. John T. Brooks, MD, chief medical officer of the CDC's COVID-19 response team, reviews recently published epidemiologic data that reinforce the role of mask use for pandemic control. Related Article: Effectiveness of Mask Wearing to Control Community Spread of SARS-CoV-2