I’ve got a legal explainer up at ArcDigital, my first appearance there. My answer is “Mostly, yes.” You can read it here. From its conclusion:
After the immediate threat to life has passed, both we and the courts must be vigilant that constitutional rights now bent spring back upright, and that governments promptly and fully relinquish whatever emergency powers they have flexed. But we also need to face the facts about this country’s actual constitutional law, which from the Revolution to the present day has been united in treating legitimate government power as at its zenith during a “hot” emergency of deadly contagion.
It can be tempting to spin tales of constitutional law as we might like it to have been, and pass that off as the actual state of the law. We who believe in law as law should especially resist that temptation.
P.S. More sources on quarantine and related public health powers: Mark Miller, Pacific Legal Foundation; Al Tompkins, Poynter; Rebecca Katz et al., Journal of Public Health Management Practice 2018.