Finding a phage was quite the journey though, as 5075 can rapidly capsule switch in a way that likely also confers phage resistance. So, it wasn't easy, but we found a phage that we named Mystique (because it was and still is quite mysterious).

Mystique is a lytic phage that's genetically similar to a few other A. baumannii phages, but structurally it seems to have more in common with wildly different phages. Mykhailo Kopylov and Daija Bobe did some beautiful work on the structure