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There is no denying that wearing masks slows the spread. But how much do fabric masks with no filter, which allow most droplets through, slow the spread? I would appreciate any in reference to studies/indications on which fabrics might be appropriate.

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https://www.ncbi.nlm.nih.gov/pubmed/24229526

> Both masks significantly reduced the number of microorganisms expelled by volunteers, although the surgical mask was 3 times more effective in blocking transmission than the homemade mask.

Stopping droplets entirely isn't as critical as slowing them down. That's why the homemade masks still require the six foot social distancing.

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