My only question is: "Why hasn't the world done this two weeks ago?" The US is failing to test on a massive scale, and the outbreak has been growing exponentially, week after week. Control measures are being taken, but on an inconsistent, fragmented basis.
https://covidtracking.com/us-daily/
The failure at the beginning was not to have capacity ready. The huge US medical system and its very, very large medical industry has finally gotten pointed in the right direction in regards to testing.