Perhaps fairer to say post germ-theory pandemic. During Spanish Flu it was in its infancy. During the black death it was all about miasma. Also, the window for

Perhaps fairer to say post germ-theory pandemic. During Spanish Flu it was in its infancy. During the black death it was all about miasma. Also, the window for spread with the ability to get on a plane and be on the other side of the world post infection, but pre symptoms is a "latter half of the 20th century" thing.