OF THE
TIMES

Between 2004 and 2016 at least a dozen research or review articles have been published on the inadequacies of face masks. All agree that the poor facial fit and limited filtration characteristics of face masks make them unable to prevent the wearer inhaling airborne particles. In their well-referenced 2011 article on respiratory protection for healthcare workers, Drs. Harriman and Brosseau conclude that, "facemasks will not protect against the inhalation of aerosols."That study was removed from the website of the Journal of Oral Health in July 2020, because it was "no longer relevant in our current climate". Which is perfectly normal, I'm sure.
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Health care workers have long relied heavily on surgical masks to provide protection against influenza and other infections. Yet there are no convincing scientific data that support the effectiveness of masks for respiratory protection.
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It should be concluded from these and similar studies that the filter material of face masks does not retain or filter out viruses
Why Face Masks Don't Work: A Revealing Review
Comment: Looks like microplastics will be a permanent part of Nature.