Masks A post or two ago I mentioned a meta-analysis about masks and forgot to include a hyperlink to the study. I know many of you are looking for it, so here it is. In short, the authors pooled 72 studies to assess how different public health mitigation measures (like masks, socially distancing, handwashing, etc.) impacted COVID19 infection. They found that some public health measures don’t really work. But, mask wearing reduced COVID19 infection by 53%. (For the record, this isn’t the only publication that shows masks work. For example,
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