Federal officials still wanted to reserve surgical masks and N95 masks for frontline health care workers. States then began introducing requirements that individuals wear face coverings in public.

Introduction: The global coronavirus disease (COVID-19) pandemic of 2020 caused by SARS-CoV-2 resulted in a shortage of filtering facepiece respirators (FFRs), such as N95 and KN95 masks ...

In community settings, any mask use is protective during epidemics, especially if used early, when combined with hand hygiene, and if wearers are compliant. Community use of N95 respirators ... are ...

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“So, choose an N95 or KN95 mask—those are great if you have them, especially if your loved one is at significant risk for severe illness due to immunosuppression or underlying medical conditions.” ...

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Stay home and limit contact with others when you're sick, even if your symptoms are mild. Wear a well-constructed, well-fitting mask when appropriate. Improve indoor ventilation when possible. For ...

With more contagious coronavirus variants spreading across the U.S. and the supply of COVID-19 vaccines outpacing supply, further guidance has been released about mask-wearing. Maximizing the fit of ...