It doesn't specifically state that the bacterial infections are caused by masks - obviously we can infer that, but do we know that masks were widely used in 1918? If someone could post a link to a report on this, I would appreciate it.
Of course they were widely used. Have you not seen the photos of baseball games and everyone is wearing them? There is mountains of photo evidence showing masks were widespread back then during their pandemic
It doesn't specifically state that the bacterial infections are caused by masks - obviously we can infer that, but do we know that masks were widely used in 1918? If someone could post a link to a report on this, I would appreciate it.
Of course they were widely used. Have you not seen the photos of baseball games and everyone is wearing them? There is mountains of photo evidence showing masks were widespread back then during their pandemic