“If the importance of a disease for.mankind is measured by the number of fatalities it causes,” he said, "then tuberculosis must be considered much more important than those most feared infectious diseases, plague, cholera, and the like. One in seven of all human beings dies from tuberculosis. If one only considers the productive middle-age groups, tuberculosis carries away one third and often more of these."
(Koch on tuberculosis in 1882)
That's the first time I see this stat. That's really grim.