The first COVID-19 case in South Korea was confirmed on Jan. 20, 2020. The epicenter of the outbreak in South Korea is in Daegu, a city of almost 3 million people 150 miles SE of Seoul. Church services in Daegu have been the main cause of spread. Based on data collected from the Korea Centers for Disease Control and Prevention, the effective reproduction number in this area was estimated to be 1.5 as of Feb. 26, 2020. Nation-wide preventative measures are expected to reduce the reproduction number to below one.