South Korea had 30 cases 2 days ago, 51 cases yesterday, and 107 today.
This could be the source for the outbreak in S. Korea, and has a link to the church as well:
Mass infection feared at a hospital in Cheongdo
Daenam Hospital could emerge as new COVID-19 cluster with 15 cases, including potential first death
By Ahn Sung-mi
Published : Feb 20, 2020 - 18:43
A hospital in Cheongdo, North Gyeongsang Province, could emerge as the new cluster of COVID-19 outbreak here, after a total of 15 people, including a man who died Wednesday, were confirmed to have contracted the virus.
...“We ask anyone who has had any contact with the hospital to self-isolate,” KCDC Director Jung Eun-kyeong said at a news briefing...
..It was also reported that several groups of the church members visited Cheongdo on a regular basis for voluenteeer works.
http://www.koreaherald.com/view.php?ud=20200220000948