I am currently working on a new class of antibiotic that does not create resistance drug resistance in the bacteria it targets. It takes them out in a new way that the bacteria cannot adapt to.
Until it goes through the full range of testing over many years to prove its utility, the current antibiotics are all we have. Using the wrong one that is ineffective just contributes to the problem of resistance. Killing an infection fast and completely minimizes any chance of resistance developing.
Many physicians are wrongly starting with old drugs hoping they will work before moving to stronger ones. It is a dangerous approach, the bugs develop resistance they didn’t have before and makes the stronger meds less effective. If you kill them all immediately, none live to develop resistance.
Go nuclear...or be prepared for a long war against the infection that you may lose.
In the World of bacteria, that which does not kill them only makes them stronger.