SOTT FOCUS: The Science is Conclusive: Masks and Respirators do NOT Prevent Transmission of Viruses

Comment: The following review of the scientific literature on wearing surgical and other facemasks as a means of preventing the transmission of SARS-CoV-2 and thus preventing contraction of ‘Covid-19’ was published a month ago. And absent some miraculous suspension of decades of hard science on the transmission of viruses, it’s settled… Abstract Masks and respirators do not work. There have been extensive randomized controlled trial (RCT) studies, and meta-analysis reviews of RCT studies, which all show that masks and respirators do not work to prevent respiratory influenza-like illnesses, or respiratory illnesses believed to be transmitted by droplets and aerosol particles. Furthermore, the relevant known physics and biology, which I review, are such that masks and respirators should not work. It would be a paradox if masks and respirators worked, given what we know about viral respiratory diseases: The main transmission path is long-residence-time aerosol particles (< 2.5…

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