the only one out of 13 that showed masks to be effective. And since it was in Bangladesh, that study has no credibility. Besides, it only stopped one out of 9 infections from happening, even if they did work and assuming the study was legit.
the only one out of 13 that showed masks to be effective. And since it was in Bangladesh, that study has no credibility. Besides, it only stopped one out of 9 infections from happening, even if they did work and assuming the study was legit.