> If you happen to take a few minutes to read the paper, you'll notice that the study was conducted with a type of cloth mask produced locally which had a filtr

> If you happen to take a few minutes to read the paper, you'll notice that the study was conducted with a type of cloth mask produced locally which had a filtration efficiency rate of around 37% with a standard deviation of 6%, compared with the surgical mask's filtration efficiency of 95%. I read it, thanks. The mask they used was much better than what most people are wearing: > The cloth mask had an exterior layer of 100% non-woven polypropylene (70 grams/square meter [gsm]), two interior layers of 60% cotton / 40% polyester interlocking knit (190 gsm), an elastic loop that goes around the head above and below the ears, and a nose bridge If a cloth mask with three layers of different materials and a nose bridge is dramatically less efficient than a simple surgical mask, then that's pretty damning for the whole idea of a cloth mask, in general.