Study Shows that Only .07% of Koreans Have the Coronavirus Antibody
I hope no one is surprised by so few people coronavirus antibodies when virus suppression has been the main strategy in South Korea:

Only one in 1,440 Koreans in a second round of serology tests has coronavirus antibodies, if the test conducted by the Korea Centers for Disease Control and Prevention proves reliable. That translates into just 0.07 percent.
The second round of tests was conducted between June 10 and Aug. 13 on subjects in 13 cities to see if they might have had symptomatic infections.
Given 20 percent of COVID-19 infections over the last couple of weeks were not traceable, health officials have believed that quite a number of people would show antibodies.
The KCDC announced the results of its first serology test on July 9 which showed only one out of 3,055 test cases had coronavirus antibodies (0.03 percent).
Chosun Ilbo
You can read more at the link, but to put this into perspective back in June Sweden reported that 10% of Stockholm residents had the COVID-19 antibody. Sweden is well known for not instituting lockdowns like most other countries have and that led to an initially high death rate. However, for the month of August the daily death rate has dropped significantly into the low single digits with some days with no deaths.

It is still too early to tell which strategy will work and much of it will be determined by if a workable vaccine is actually developed.

