I don't think it's a dangerous precedent, in the sense that precedent happened a long, long time ago. These sorts of diseases are horrific, and quarantine is usually applied with extreme predjudice. Quarantine is no joke, and is a last line of defense.
That said, quarantine might be overkill. But isolation really is a valid solution. It's just awful. But refusing vaccination is also awful, since it can lead to far more brutal suffering than the inconvenience of uprooting one's home.
Honestly it's just a crap situation, where each solution that isn't vaccination is just a measure of weighing the ultimate amount of suffering and choosing the least bad.
That said, quarantine might be overkill. But isolation really is a valid solution. It's just awful. But refusing vaccination is also awful, since it can lead to far more brutal suffering than the inconvenience of uprooting one's home.
Honestly it's just a crap situation, where each solution that isn't vaccination is just a measure of weighing the ultimate amount of suffering and choosing the least bad.