Isn't this a fairly well known outcome? That wearing a mask doesn't significantly reduce the mask wearer's likelyhood of contracting Covid? Around here (NSW .a

Isn't this a fairly well known outcome? That wearing a mask doesn't significantly reduce the mask wearer's likelyhood of contracting Covid? Around here (NSW .au) the messaging I hear all seems to be "wearing a mask will help reduce the chance of you infecting someone else if you are in the initial non-symptomatic phase of infection". I wear a mask to the shops not to protect myself from other people, but to reduce the impact on other people if I happen to be infectious but don't yet know it. A mask is to keep my potentially plague-ridden coughs and sneezes in, not to keep yours out.