Flemming's work was in 1928, over a decade after folks were using phage therapy, and the mass production of penicillin was in the mid-40's. Note that we were u

Flemming's work was in 1928, over a decade after folks were using phage therapy, and the mass production of penicillin was in the mid-40's. Note that we were using phage therapy before we knew what phages were, because as it turns out, that's not really necessary. Except that if you don't know what they are, you also don't know that your preparation is full of endotoxins from ruptured bacteria, which are a threat to your patient. Which is one of the reasons it wasn't terribly popular.