Frequently Asked Questions about Mask Usage

Face masks help prevent the spread of COVID-19 when worn consistently and correctly. Here are considerations to help you choose a mask and ensure you get the best protection from it.

  • Filtration: Different masks filter out different types of harmful particles. When choosing a mask, review the manufacturer’s filtration claims, including the percentage of filtration. The most effective masks typically provide at least 95% filtration. 
  • Fit: A mask can only filter particles that are trapped by the filter material. Ensure your mask forms a tight seal over your nose and mouth, because eliminating any gaps in the fit help improve protection. 

Learn more about what to consider when choosing a face mask. 

Updated October 25, 2024 

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Misinformation Alerts about Mask Usage

False claims about mask effectiveness continue to circulate

A White House email that unintentionally contained outdated mask guidelines has sparked conversations about the effectiveness of wearing masks to protect against COVID-19. The email about an upcoming event at the White House stated that unvaccinated individuals are required to wear masks and socially distance at the event. Right-wing commentators referred to mask requirements as

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Viral article accuses the government of lying about mask effectiveness

A right-wing newspaper published an article claiming that the U.S. government lied about the effectiveness of masks. This claim is partially based on a recent meta-analysis of mask studies, which found that masks “probably make little or no difference” with respect to COVID-19. Recommendation: Medium Risk About Us The Public Health Communications Collaborative (PHCC) was

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Posts blame masks, COVID-19 mitigations for respiratory disease “tripledemic”

Several popular social media accounts are promoting the idea that mask mandates and other COVID-19 protections are responsible for the “tripledemic,” the current wave of flu, COVID-19, and RSV infections that are overwhelming U.S. hospitals. One post claims that wearing masks weakened children’s immune systems by preventing exposure to germs, making them more susceptible to

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