A new article, “The History of Phage Therapy”, states: There are all kinds of reasons why the use of bacteriophages has failed to take off in the USA. “By the mid-1940s, Western phage treatments were largely discredited”, explains Lina Zeldovich in her intriguing history book, The living medicine: how a lifesaving cure was nearly lost and why it will rescue us when antibiotics fail. “Some simply weren’t a good match for the infections they were used to treat. Some made false claims promising to cure ailments that weren’t caused by bacteria. And others might have been downright fake”. A 1934 paper in JAMA had cast doubt on phage therapy, highlighting the erratic nature of the preparations and the dangers associated with intravenous use.
https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(25)00210-5/abstract
Read the Book: The Living Medicine by Lina Zeldovich
