Has anyone besides South Korea (and I guess Russia) handled this well?
South Korea and Singapore are probably the best examples of successful tracing and containment efforts.
Most other countries didn't even have a chance to trace and contain because the spreads went undetected for too long.
The outbreaks across Europe, except in Italy, were mostly Austrias fuck up. They basically ignored an outbreak in Tyrol for 2 weeks after Iceland reported that a group of tourists from there had several members who tested positive on March 1st. After that warning from Iceland Austria took until March 14th before shutting down the ski resorts. By then thousands of infected tourists had returned home all across Europe without self-isolation because there was no official warning that they had been in a high-risk area.
That's the kind of mistake that will ruin containment strategies.
Once containment failed you need to mitigate and keep infection rates from rising so fast that the healthcare system will be overwhelmed. Several countries are still successful in that, but it will take another few weeks until we see if the flattening of the curve is actually sustainable.
Germany, Switzerland have healthcare systems that still have quite some capacity left.
Germany estimates that, if hospitalization rates stay the same, its system could handle a peak of 40.000 daily new infections, that's about double the daily new infections the US currently records, but you have to consider that a lot of new infections still go undetected, so you can't fully compare those numbers.
Germany also has a very evenly distributed population density. There are no metropolitan areas like New York where millions upon millions of people live bunched up in a tiny area. So their healthcare infrastructure isn't locally going over capacity easily either.
So yeah, South Korea and Singapore were really proactive and successful. They are generally well prepared for a scenario like this and it shows.
Of the Western nations, Germany is probably the biggest one with a promising approach but despite a flattening trend, the long term viability is still not definitive. It should also be pointed out that apart from a well thought out approach, Germany also has very high numbers of intensive care units per capita, like 6-8 times that of the UK, which makes it way easier to keep the system running within capacity.
Japan also shows good numbers, but they barely test. They have a targeted approach to testing and strict isolation rules. Unless you are a risk group you can't even get tested. So they probably have much high case numbers, but don't record them. The question is for how long such strict isolation measures can be upheld. Opening up again becomes more complicated when you are rather blind to the viruses spread.
Russia is not handling this well at all. They simply don't report how bad it is getting.
The government there mandated a week off work last week and people took it as paid vacation and traveled all over the country. Likely spreading the virus to every last corner. Similar to the Spring Break fuck up in the US.