Researchers from the University of Waterloo in Canada have determined that while N95 and KN95 masks do the best job at containing aerosol droplets from the wearer's mouth, most cloth masks, such as the popular blue surgical masks, are only 10 percent effective since it doesn't properly cover the wearer's mouth.
According to the study, "The most common masks, primarily due to problems with fit, filter about 10 percent of exhaled aerosol droplets. The remaining aerosols are redirected, mostly out the top of the mask where it fits over the nose, and escape into the ambient air unfiltered."
The study also found that proper ventilation systems can be just as effective as the best masks.
"Masks are really for infected people to protect them from spreading infection to people who are not infected rather than protecting uninfected people from acquiring infection," Fauci wrote on February 5, 2020.
"The typical mask you buy in the drug store is not really effective in keeping out virus, which is small enough to pass through the material."
Despite his private acknowledgment of the ineffectiveness of masks, Fauci would go on to publicly recommend mask-wearing, goggles, and even double masking.
Senator Rand Paul has repeatedly criticized mask mandates and challenged Fauci's public recommendations and behavior.
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Monday, August 23, 2021
Another Study Undermines Mask Mandates
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