Frequently Asked Questions about When to Wear a Mask

Data show that high-quality, well-fitting masks are effective at reducing the transmission of COVID-19, and that they are likely effective at reducing the transmission of flu and RSV. Health experts continue to study the use of masks and which viruses can be prevented from spreading by wearing masks. 

Wearing a mask is highly recommended after becoming sick with a respiratory virus. After your symptoms resolve and you return to your normal activities, it is recommended that you wear a high-quality mask for 5 days, especially when indoors or around others at high risk of respiratory illness complications.

Regardless of hospitalizations or current mask guidance, anyone can choose to wear a mask as an additional precaution to protect themselves and their families from respiratory infections.

Updated March 5, 2024 

Misinformation Alerts about When to Wear a Mask

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A White House email that unintentionally contained outdated mask guidelines has sparked conversations about the effectiveness of wearing masks to protect against COVID-19.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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False rumor claims CDC changed child development guidelines due to masks

Posts are circulating online falsely claiming that the CDC and American Academy of Pediatrics are changing child development milestones to account for developmental delays that resulted from young children and adult educators and caretakers wearing masks. The developmental milestones are routinely reviewed and updated when necessary. The latest update was based on data gathered through

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