Man that article is from three days ago.

Since then, this has happened:

“In the past several days, South Korea has stared to see an increased number of coronavirus cases directly as a result of foreign nationals traveling to South Korea testing positive within the country.

Many individuals in Europe and the U.S. have been traveling to South Korea for its efficient coronavirus testing and medical centers.”

S.Korea reports 146 new coronavirus cases, highest in a week

The new inflow of foreign nationals, however, is beginning to overload existing medical centers and staff, leaving the possibility of a second wave of coronavirus open.

Residents in South Korea said that they fear when they see individuals carrying trolley bags outside, as most of the new cases in late March have come from foreign nationals raveling to South Korea.“


https://www.google.com/amp/s/www.ccn.com/3-reasons-a-coronavirus-second-wave-threatens-china-south-korea/