What stopped the flu pandemic of 1918?
In the world wide Spanish flu pandemic of 1918, Physicians tried everything they knew, everything they had ever heard of, from the ancient art of bleeding patients, to administering oxygen, to developing new vaccines and sera (chiefly against what we now call Hemophilus influenzae?a name derived from the fact that it was originally considered the etiological agent?and several types of pneumococci). Only one therapeutic measure, transfusing blood from recovered patients to new victims, showed any hint of success. So, basically, it ran the course and died out.