Alliance for Pandemic Preparedness

November 2, 2020

How Effective Is the Filtration of ‘KN95’ Filtering Facepiece Respirators During the COVID-19 Pandemic?

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An investigation of filtration performance of different filtering facepiece respirators (FFRs) found high disparities between FFRs purchased by healthcare establishments.  NIOSH-approved certification offered good efficiency compared to non NIOSH-approved FFRs. Furthermore, inspecting FFRs visually was not helpful in determining if the product was counterfeit or had defects. Brochot et al. (Oct 30, 2020). How Effective Is the Filtration of ‘KN95’ Filtering Facepiece Respirators During the COVID-19 Pandemic? Annals of Work Exposures and Health.