Indeed. While Flemming himself was concerned about resistance, penicillin is: 1) Much broader spectrum than phage preparations 2) Easier to manufacture in larg

Indeed. While Flemming himself was concerned about resistance, penicillin is: 1) Much broader spectrum than phage preparations 2) Easier to manufacture in large quantities 3) Safer, because you don't need to filter the prep to remove endotoxins It's basically a silver bullet - if you don't look too far in the future. It was incredibly disruptive.