[Mom MD]

a few more

https://www.nejm.org/doi/full/10.1056/NEJMp2006372

https://www.americanthinker.com/blog/2020/06/what_good_do_the_masks_do_really.html

https://pubmed.ncbi.nlm.nih.gov/19216002/

[palmer]

That last link is a study with 33 participants and no blinding.

[palmer]

Ah yes, and your first link is the oft-cited "We know that wearing a mask outside health care facilities offers little, if any, protection from infection."

That is a throwaway line in that paper, that paper is not a study, that paper contains five references, none of which have anything to do with wearing or not wearing masks. It is an unsupported claim with no scientific value.