The first thing you have to learn is to identify or “best guess” the infections, and decide if it is gram positive or negative. Misuse of antibiotics is a real concern to me, as people are still self-diagnosing and taking them for viruses, or taking leftover antibiotics from past infections or from other people. They don’t realize (or care) that their misuse causes drug resistance that affects everyone.
The survival doc has a great article he says ” we spent weeks digging–and unearthed some never-before-reported information that may change the way you think about these drugs.”
This is well worth a read. Investigative Report: Everything You’ve Wanted to Know About Fish Antibiotics for Humans.