S Korea steps up efforts against COVID-19 as cases grow(1/5)

A medical worker registers for a suspected patient at a medical center in Daegu, South Korea, March 3, 2020. South Korea confirmed 851 more cases of the COVID-19 on Tuesday, raising the total number of infections to 5,186. (Photo by Lee Sang-ho/Xinhua)

South Korean army medical workers arrive at a hotel in Daegu, South Korea, March 3, 2020. South Korea confirmed 851 more cases of the COVID-19 on Tuesday, raising the total number of infections to 5,186. (Photo by Lee Sang-ho/Xinhua)

Medical workers prepare to receive suspected patients at a medical center in Daegu, South Korea, March 3, 2020. South Korea confirmed 851 more cases of the COVID-19 on Tuesday, raising the total number of infections to 5,186. (Photo by Lee Sang-ho/Xinhua)

Medical workers prepare to receive suspected patients at a medical center in Daegu, South Korea, March 3, 2020. South Korea confirmed 851 more cases of the COVID-19 on Tuesday, raising the total number of infections to 5,186. (Photo by Lee Sang-ho/Xinhua)

A staff member conducts disinfection work at National Training Institute of Education, Science and Technology in Daegu, South Korea, March 3, 2020. South Korea confirmed 851 more cases of the COVID-19 on Tuesday, raising the total number of infections to 5,186. (Photo by Lee Sang-ho/Xinhua)