What other countries in the world are testing asymptomatic people on the scale that we are? My first pass on this answer is zero, and there is no close second.

FYI: South Korea isn't testing everyone. They're looking for symptomatic people and do temp checks. SK actually ranks pretty low in tests per capita. And with 4% obesity rate (the main non-nursing home comorbidity), their hyper surveillance state is prob entirely unnecessary.

As for Japan, they hardly do any testing at all. That's because the people in charge probably realized a long time ago that mitigation measures don't work to "stop the spread," and the virus isn't a valid reason to change public behavior at all.

Conduct lots of tests, find lots of cases. Stop testing, no more cases. It sounds so simple, but no one in the media appears to have cracked the code just yet. The "success stories" touted in media are largely countries that decided to stop testing, which IMO is the smart play.