FAUCI / NIH
"The typical mask you buy in the drug store is not really effective in keeping out virus, which is small enough to pass through the material. I do not recommend that you wear a mask."
Private: masks don't work. Public mandate eight weeks later: masks required. Study that changed his mind: he couldn't name one under oath in 2022. The press accepted 'guidance evolved' as a complete answer. The gap between his February private email and his April public mandate was never the subject of a serious investigative piece.