And by "isolate," you would have to mean "imprison." These "proud homeless" don't take well to being isolated or cooped up anywhere. Say what you will, they enjoy their freedom, and they despise authority.
Quarantine is such a harsh word. I think there will have to be a traveling judge that stands there with the police and the county health department, and writes up a 30-day order.
But here’s the other factor which will come up real quick once quarantine starts up. Most all of these homeless folks are alcoholics and drug-consumers. Maybe some nurses will correct me, but for this medication to be effective...I think they’d have to limit your alcohol consumption and eliminate all the crack, cocaine, and heroin for that period as well.
Whatever kind of camp or compound you are talking about....it has to be a fairly maximum security deal, and no chance of drugs coming in, or people exiting. This won’t be a pleasant place, and if I were a doctor or nurse...it’d be the last place on Earth that I’d want to enter and provide treatment.