'Here’s a recent paper with a rare use of an “antibiotic antibody” idea. I was writing here not long ago about a new antibiotic candidate that targets Acinetobacter baumannii, which is a major human pathogen (and especially so in hospital-derived infections). This new work details the generation of an antibody to an important part of the A. baumannii outer membrane, pseudaminic acid. That’s an unusual amino-sugar compound that is not found in mammals at all, so it’s a pretty clean target.'

https://www.science.org/content/blog-post/antibodies-everywhere