COVID-19: What they measured is not what they said they measured

On September 24, a group from the University of California, Davis, published a paper in Nature that claims “wearing of surgical masks or KN95 respirators, even without fit-testing, substantially reduce the number of particles emitted from breathing, talking, and coughing.” In other words, put those masks on! Down in the fine print they admitted that … Continue reading COVID-19: What they measured is not what they said they measured