What did the scientific literature say before the issue became political? If you are looking for the scientific rationale behind universal mask-wearing, you certainly won't find it now that the issue has become as political as guns, abortion, and taxes. We are now at a point where Canada's chief public health officer is calling on people to wear masks when engaging in sexual activities and 19-month-old babies are being forced to wear them on airplanes. There is no rational thought in a political cult. But what did the governmental and scientific literature say on the issue before it became political?.....snip....In...