hm
Disclaimer: I am not an epidemiologist
It spreads from breathing it in so the obvious low-effort solution given that some people are going to be dumb about not infecting other people is, like, flu mask-type-things, they’re relatively inexpensive and easy to manufacture and distribute which means that it’s easy to get high coverage with limited resources and they ?probably? affect your likelihood of catching it
From the other perspective we obviously want to discourage people from spreading it to others, it’s probably not practical to institute quarantines and expect them to be followed and imprisoning people who go places in public while sick is actively counterproductive assuming that you would prefer that your entire prison not be infected so you can’t do that, fines could plausibly work as a deterrent although possibly not well enough (and runs into the problem that people going out are disproportionately likely to be people who are trying to avoid, like, ending up homeless due to missing work, and thus less likely to be able to afford the fine)
Depending on how effective the treatment is and what exactly it requires it’s reasonably likely that we mostly don’t want infected people in hospitals due to both the risk of them infecting everyone else and the risk of them catching something else while there. unfortunately people are really bad at listening to instructions about that sort of thing but you might be able to get somewhere with ‘please only come to the hospital if you’re part of the following high-risk groups’? what specifically you’d want to do here seems like it probably depends on the specifics of the treatment