I think you should read the study yourself instead of taking some journalist conclusions who really loves flashy titles https://www.acpjournals.org/doi/10.7326

I think you should read the study yourself instead of taking some journalist conclusions who really loves flashy titles https://www.acpjournals.org/doi/10.7326/M20-6817 https://www.acpjournals.org/doi/10.7326/M20-6817 From the study: Inconclusive results, missing data, variable adherence, patient-reported findings on home tests, no blinding, and no assessment of whether masks could decrease disease transmission from mask wearers to others.