4 ms·
To be clear, this compared cloth vs. medical masks. There was no “unmasked” arm. So the caution was of the “given the choice, choose medical masks.” Also this m
by bitcurious 6y ago
To be clear, this compared cloth vs. medical masks. There was no “unmasked” arm. So the caution was of the “given the choice, choose medical masks.”
Also this measures auto-protective properties of mask wearing, not preventing spread to others.
- lol2143651 6y agoYes cloth masks plausibly increased infection risk. And many people today are wearing cloth masks because local mandates require them to. That really should call into question the efficacy of most mask public policy. It is poorly guided and poorly supported by evidence. There isn't good science to support untrained people wearing masks throughout the day is providing a public health benefit.