Maskerade is a fantasy book about the Discworld written by Sir Terry Pratchett in 1995. I only mention this to let you know where the title of this article originated...and that it's not misspelled.
Earlier, I thought about posting an article simply called Maskerade, but later I decided not to. So you'll likely never get to read Maskerade I.
The first several parts of Maskerade II are my delving into the research and suggestions (as of late June, 2020) into the wearing of face masks to help slow the spread of COVID-19.
The last part will be my own thoughts about the matter put forth as logically as I know how.