N95 respirators get tested in a fit test lab at 3M Center in Maplewood ... That’s key, because cloth masks and even medical-grade surgical masks were never enough for meaningful, long-lasting ...

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 ...