The Supreme Court (and other courts) have held mandatory quarantines to be legal, including of entire areas and not just persons known to be infected. It would

The Supreme Court (and other courts) have held mandatory quarantines to be legal, including of entire areas and not just persons known to be infected. It would logically follow that if the quarantine is legal, penalties for violating it are also legal. --------------- Most of those cases are quite old, but they're still the ruling precedent on the topic as far as my (limited) knowledge goes. For one that went to the Supreme Court in 1902 and continues to be cited: Compagnie Francaise de Navigation a Vapeur v. Louisiana Board of Health https://en.wikipedia.org/wiki/Compagnie_Francaise_de_Navigation_a_Vapeur_v._Louisiana_Board_of_Health https://en.wikipedia.org/wiki/Compagnie_Francaise_de_Navigat...