3 ms·
You have misread the paper. It says that cloth masks are worse than medical masks, and worse than "standard practice" which seems to be mostly medical masks but
by tlb 6y ago
You have misread the paper. It says that cloth masks are worse than medical masks, and worse than "standard practice" which seems to be mostly medical masks but not worn as rigorously. They didn't test against no masks, which would be insanely dangerous in a hospital.
- tripletao 6y agoYeah. I saw that paper cited frequently back when the public health authorities were advising against masks, and I'm afraid their decision to characterize standard practice including medical mask wearing as the "control arm" has caused considerable confusion and harm.