> A Danish study of 6000 participants found that wearing a surgical mask did not significantly reduce a person's risk of COVID-19 infection, compared to the risks facing those who did not wear masks.
> And a Vietnamese study of 1600 participants found that cloth masks allow for 97% penetration of particles. This study also found that cloth mask wearers had a higher rate of infection than the control group who wore no masks.
What’s interesting is this (intentional or otherwise) game being played with terminology. Mask proponents are arguing cloth masks reduce the R0 of the virus and less so about your own personal risk. Mask opponents seem to be saying “but it doesn’t change your own personal chances of infection” which may be true but is a weird way to look at controlling a pandemic. It’s also weird to me that some studies would conclude that cloth masks have a negative impact on your personal infection. Is the theory that coronavirus particles somehow just get trapped in the cloth?