Having talked to a researcher that's used phage therapy on a soldier to combat sepsis, it obviously works, but the hurdle is getting the FDA/others to allow injection of live virus into people. (Edit: that was his quick response to "why is it not being used?")
Somewhat similar: I had to get several injections of the subunit anthrax vaccine that essentially doesn't work (even though live attenuated anthrax is far more effective) because some regulatory committee doesn't like the idea of live (or even whole cell) vaccines.
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Having talked to a researcher that's used phage therapy on a soldier to combat sepsis, it obviously works, but the hurdle is getting the FDA/others to allow injection of live virus into people. (Edit: that was his quick response to "why is it not being used?")
Somewhat similar: I had to get several injections of the subunit anthrax vaccine that essentially doesn't work (even though live attenuated anthrax is far more effective) because some regulatory committee doesn't like the idea of live (or even whole cell) vaccines.