Medical workers wearing protective suits walk to the wards of a hospital in Daegu, South Korea, March 20, 2020. South Korea reported 87 more cases of the COVID-19 on Thurday, raising the total number to 8,652. (Newsis/Handout via Xinhua)

A passenger is seen at the East Daegu Station in Daegu, South Korea, March 20, 2020. South Korea reported 87 more cases of the COVID-19 on Thurday, raising the total number to 8,652. (Newsis/Handout via Xinhua)

People rest outside the closed Tapgol Park in Seoul, South Korea, March 20, 2020. South Korea reported 87 more cases of the COVID-19 on Thurday, raising the total number to 8,652. (Newsis/Handout via Xinhua)

Children have class at a trusteeship classroom of a primary school in Seoul of South Korea, March 20, 2020. South Korea reported 87 more cases of the COVID-19 on Thurday, raising the total number to 8,652. (Newsis/Handout via Xinhua)

Children have class at a trusteeship classroom of a primary school in Seoul of South Korea, March 20, 2020. South Korea reported 87 more cases of the COVID-19 on Thurday, raising the total number to 8,652. (Newsis/Handout via Xinhua)