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Masks and Covid-19: Your top questions about N95s and KN95s, answered

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NIOSH APPROVED N95 MASK RESPIRATOR - Approval Number: TC-84A-7447 - certified for at least 95% particulate filtration efficiency. Manufacturer: SUZHOU

NIOSH Approved N95 Mask Particulate Respirators, Pack of 20 N95 Face Masks, Individually Wrapped, Universal Fit

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Efficacy of masks and face coverings in controlling outward aerosol particle emission from expiratory activities