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https://www.nytimes.com/2020/09/08/h...-immunity.html
That masks may result in less severe cases and build immunity possibly asymptomatically. Contrary to what some claim, in concentrated areas, like meat plants, where masks are used, there is a significant drop in Covid rates.
We have two grades of mask going around here: regular 3-layer cotton muslin, and masks with an inner layer of 3M Filtrete Merv 13 material. So far so good
That masks may result in less severe cases and build immunity possibly asymptomatically. Contrary to what some claim, in concentrated areas, like meat plants, where masks are used, there is a significant drop in Covid rates.
We have two grades of mask going around here: regular 3-layer cotton muslin, and masks with an inner layer of 3M Filtrete Merv 13 material. So far so good
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