There are several paths, both natural (looking at substances, animals, plants, and fungi with antibiotic properties) and biochemical (chemical engineering), and some might actually yield relatively quickly. But of course nobody can tell how quickly that will pan out, and how quickly we will have to face a bacterium with full resistance that is transmitted easily.
Are there any known paths to a different antibiotic
There are several paths, both natural (looking at substances, animals, plants, and fungi with antibiotic properties) and biochemical (chemical engineering), and some might actually yield relatively quickly. But of course nobody can tell how quickly that will pan out, and how quickly we will have to face a bacterium with full resistance that is transmitted easily.