Effectiveness of Adding a Mask Recommendation to Other Public Health Measures to Prevent SARS-CoV-2 Infection in Danish Mask Wearers
https://www.acpjournals.org/doi/10.7326/M20-6817
So that was the study... and here's the "fact check":
Danish Study Doesn’t Prove Masks Don’t Work Against the Coronavirus
https://www.factcheck.org/2020/11/danish-study-doesnt-prove-masks-dont-work-against-the-coronavirus/
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Q: Did a recent study in Denmark show that face masks are useless for COVID-19?
A: No. The study found that face masks did not have a large protective effect for wearers — not that masks provide no protection at all or don’t offer benefits to others.
Lol.
Gotta love fact checkers. They pick a claim that they know they can "fact check" as false... while at the same time, presenting the same evidence that masks don't really provide any substantial protection... but the claim is false... because they're "slightly" effective and the claim is that they don't work at all.
Like, they can't just come out and say "masks really don't provide any substantial protection"... because then people might realize that masks... don't provide any substantial protection. So they have to frame the question as "are they useless" and the answer as "no, they're not useless (they're almost useless)" so that they can state that the claim that masks are useless is false.
I'm better than you, but that doesn't mean you're not great!