China has succeeded (if we choose to believe their reported numbers) through serious suppression of personal interaction and travel. Road blocks, quarantines in house, etc.

South Korea has succeeded with mitigation because it has tested a significant portion of its population quickly. 270,000 tests of 50 million people. It has not closed down cities to do so.

The US has tested (according to the COVID-19 Tracking Project) 104,000 people in a population of 327 million. And so much of that testing is being done in large cities (or those with large research hospitals and lab capacity) that there is a lot of the country we don't know about yet.

I hope we are on the backend of the wave. But I have not seen much to indicate it. Last nights data upload to Johns Hopkins site pushed the mortality rate up again. But its collecting data from multiple public records, so the time frames on reporting might not align with each other. 205 death according to them as of this AM.