Great point.

Some places, like Denmark, have Cadillac-grade health care systems and are able to manage infectious disease on a national level like a Formula 1 team. They are able to be less stringent because it's far easier to get a handle on disease outbreaks.

Other places, like the US, are running 1992 Chevrolet Cavalier-grade health care system and are able to manage infectious disease on a national level like a group of drunk fraternity members. There's little choice but to use every blanket policy available to try to keep disease in check.