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Two masks can be worse than one: N95 respirator failure caused by an overlying face mask
Published online by Cambridge University Press: 20 December 2022
Abstract
We have demonstrated the effect of covering an N95 filtering facepiece respirator (FFR) with an overlying face mask. In total, 100 participants successfully completed quantitative fit testing wearing a 3M 1870+ FFR. Among them, 13 (13%; 95% CI, 7%–22%) failed subsequent fit testing when simultaneously wearing a Halyard 47117 procedural mask over the FFR.
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- © The Author(s), 2022. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America
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