Guess I'll just do a quick post about this.

Remember back in early 2020 when everybody was saying maybe masks would work to stop the spread?

But certain people said nah, masks don't work.
Well back in 2015 a hospital wanted HCW to vaccinate.

To encourage vaccination, they implemented a policy that if the HCW did not vaccinate, they had to wear a mask for their entire shift.
Unfortunately when it went to arbitration the hospital had then to justify its argument that masks stopped outbound transmission (source control).

Case is here. Appendices are full of references about masks, including working for source control.

https://www.canlii.org/en/on/onla/doc/2015/2015canlii62106/2015canlii62106.html
By the way, the hospital lost, the court found the policy was implemented to encourage vaccination and so should be struck.

Quotes in this case are very interesting.
As just one example, this comment on one of @Don_Milton (air expert and doctor) studies (here https://pubmed.ncbi.nlm.nih.gov/23505369/ ) showing a 3.4-fold decrease in transmission of particles FROM the wearer.

Dr. McGreer, supporting that masks worked, said the following:
You can follow @jmcrookston.
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