China started with single digit cases, which then spread countrywide with tens of thousands of cases and many deaths. They quarantined cities, built 1000 bed hospitals in 10 days. And now after about 2 months they are seeing a slowdown.
Why would this exact scenario regarding growth in the number of cases not play out in the US? The only difference is smaller population, but cities are dense here too.
However, unlike China, I don't think US and other countries will be able to quarantine entire cities.
They only hope IMHO is that the virus becomes less virulent with as summer approaches.