But that surely was only known positive isolation, not the blanket "everybody stay home" thing grandparent was suggesting. That's a huge difference particularly wrt (child)care: someone will take over until you are healthy again vs nobody can take over because everybody else is going through the same solitary confinement thing.

The big question is do they really work. Not according to country which measure traveller from china. We know in the long term. But trusting on their stat., not my default.