Evidence Shows Masks Really Do Reduce the Spread of COVID-19 and Lower Infection Risk

Yes, wearing a mask really does work to reduce the spread of COVID-19, according to a new comprehensive review published October 31, 2023, in JAMA Network Open.

After analyzing more than 40 studies conducted with seven different methodologies, the evidence was clear: Masks can reduce the risk of spreading COVID-19 and of being infected by COVID-19, says coauthor Tom Frieden, MD, president and CEO of Resolve to Save Lives and former director of the Centers for Disease Control and Prevention (CDC).

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Resolve to Save Lives is a not-for-profit organization partnering with countries, communities, and organizations to prevent deaths from heart disease and epidemics.

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