As the pandemic drags on and countries try to grapple with how to achieve some semblance of normalcy in the fact of restrictions, they seem to have arrived at three general recommendations to help slow the spread of the virus. Wash hands with soap and water or use sanitizers, wear masks, and keep one’s distance from other people. While those seem straightforward enough, there are a lot of uncertainties within them. For example, when it comes to masks, while there has emerged a broad scientific consensus that wearing them is a good thing, what types of masks are better and are they meant to prevent the wearer from spreading infections to others or from getting infected by others or both?
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