A medical worker takes a rest outside a hospital in Daegu, South Korea, February 23, 2020. South Korea reported 161 new cases of the coronavirus, bringing the total number of infected patients in the country to 763, health authorities said on Monday, a day after the government raised its infectious disease alert to its highest level. Yonhap via REUTERS

Medical workers get ready as ambulances are parked to transport a confirmed coronavirus patient in Daegu, South Korea, February 23, 2020. Of the new cases, 115 were linked to a church in the southeastern city of Daegu after a 61-year-old woman known as "Patient 31" who attended services there tested positive, according to the Centres for Disease Control and Prevention (KCDC). Yonhap via REUTERS

A medical worker gets ready as ambulances are parked to transport a confirmed coronavirus patient in Daegu, South Korea, February 23, 2020. KCDC also reported the seventh death from the virus, a 62-year-old man from a hospital in Cheongdo, a county that saw surges in confirmed cases along with nearby Daegu in recent weeks. Yonhap via REUTERS

Ambulances transporting confirmed coronavirus patients arrive at a hospital in Daegu, South Korea, February 23, 2020. Authorities are still investigating the exact cause of the new outbreak, with Patient 31 having no recent record of overseas travel. Yonhap via REUTERS

A medical worker takes a rest outside a hospital in Daegu, South Korea, February 23, 2020. South Korea imposed its highest infectious disease alert on Sunday, vowing extra resources to the region and limiting public activities. Yonhap via REUTERS

Medical workers stand by at a hospital in Daegu, South Korea, February 23, 2020. South Korea reported 161 new cases of the coronavirus, bringing the total number of infected patients in the country to 763, health authorities said on Monday, a day after the government raised its infectious disease alert to its highest level. Yonhap via REUTERS