Sorry, I think I was confused by the "This" in your sentence that I quoted. I meant to point out that a mask protects you directly (if you are not sick) and not

Sorry, I think I was confused by the "This" in your sentence that I quoted. I meant to point out that a mask protects you directly (if you are not sick) and not just by lowering the spread of the disease throughout the population. It seems that you actually agree and I misunderstood.