https://www.vox.com/future-perfect/2019/5/14/18618618/phage-... is not the one in remembering, but it mentions the same effect.

> deploying phages can cause the bacteria to evolve in response, and that evolution sometimes involves switching from being antibiotic-resistant to being sensitive to antibiotics.

There's a few big stories like this. Chances are, in the next 25 years you may find yourself being treated with phages.