Why is there not a cure for salmonella?

Answer 1

The trick with curing a bacterial infection is to find something that will kill that particular type of bacteria, but which will not kill human cells. Since the biochemistry of human cells is very similar to that of bacteria, most of the things that kill bacteria will also kill human cells. You do not want to cure a disease at the expense of killing the patient. So, there is no guarantee that such cures can be found. You can do research into various antibiotics, but you may or may not find something that works. Furthermore, even when you do find a good antibiotic, bacteria tend to evolve resistant strains which can no longer be killed by that particular antibiotic. Bacteria are very tough, adaptable organisms. Do not underestimate them.