Broad Spectrum Antibiotics were superior to Phage Therapy when they were first introduced, as they didn't necessitate time intensive cultivation of the pathogen

Broad Spectrum Antibiotics were superior to Phage Therapy when they were first introduced, as they didn't necessitate time intensive cultivation of the pathogen prior to administration. The high selectivity of Bacteriophages was their main disadvantage. Today, with all the knowledge about the importance of a healty gut Biome, the potential risk to "good bacteria" has to be weighed before administration of antibiotics is considered. Fast diagnostic tests, like the use of PCR to detect Covid-19, turn Phage Therapies greatest Drawback, its selectivity, into its greatest advantage.