In that situation (the only one at this time), is the majority of resistances are made.
Controlling the supply, especially if you know you have a bacterial disease, can be solved readily.
In fact, on a camping trip, I was bit by 15 ticks. Was bad. When I got back to civilization, I started getting spots all over my body. Surprise, it was rocky mountain spotted fever. But if I could determine the 2 drugs for curing spotted fever and Lyme, I absolutely would have did both. But the shitty gatekeeper (doctor) wouldn't do Lyme course. Again, logically made a lot of sense, especially that Lyme tests are 60% accurate. And, 15 ticks.