The South Korea outbreak is just about to hit the point where it yields very valuable epidemiological data. These sort of data are exactly what we all need. Unfortunately, the People's Republic of China is ruled by a corrupt organization which has withheld and covered up its information on the virus, so reliable epideiological data are still not available.
South Korea has tested over 100,000 people. 6,600 have tested positive. 6,420 are active cases. 52 are currently in critical condition. 180 cases have had outcomes. 135 have recovered. 43 have died. So far, this suggests a high mortality rate. More than 25%. However, the first cases with outcomes are just now coming in and I suspect they are reluctant to confirm a case as "recovered" until they are sure. I think that given the high number of cases that have been tested, they are tracking the number of infected with a high degree of accuracy.
We'll have useful data from South Korea soon.