A canteen of an office building is equipped with glass panels labeled with anti COVID-19 notice in Seoul, South Korea, April 7, 2020. South Korea reported 47 new COVID-19 cases compared to 24 hours ago as of midnight Tuesday local time, raising the total number of infections to 10,331. The newly confirmed cases stayed below 50 for the second consecutive day. Of the total, 17 were imported cases. (NEWSIS/Handout via Xinhua)

Candidates take Korea Coast Guard auxiliary police recruitment exam in Busan, South Korea, April 7, 2020. South Korea reported 47 new COVID-19 cases compared to 24 hours ago as of midnight Tuesday local time, raising the total number of infections to 10,331. The newly confirmed cases stayed below 50 for the second consecutive day. Of the total, 17 were imported cases. (NEWSIS/Handout via Xinhua)

Faculty members put stickers onto desks to remind students keep a two-meter social distance at the Jukjeon Campus of Dankook University in Yongin of Gyeonggi Province, South Korea, April 7, 2020. South Korea reported 47 new COVID-19 cases compared to 24 hours ago as of midnight Tuesday local time, raising the total number of infections to 10,331. The newly confirmed cases stayed below 50 for the second consecutive day. Of the total, 17 were imported cases. (NEWSIS/Handout via Xinhua)

Staff disinfect the classroom at the Jukjeon Campus of Dankook University in Yongin of Gyeonggi Province, South Korea, April 7, 2020. South Korea reported 47 new COVID-19 cases compared to 24 hours ago as of midnight Tuesday local time, raising the total number of infections to 10,331. The newly confirmed cases stayed below 50 for the second consecutive day. Of the total, 17 were imported cases. (NEWSIS/Handout via Xinhua)

Candidates take Korea Coast Guard auxiliary police recruitment exam in Incheon, South Korea, April 7, 2020. South Korea reported 47 new COVID-19 cases compared to 24 hours ago as of midnight Tuesday local time, raising the total number of infections to 10,331. The newly confirmed cases stayed below 50 for the second consecutive day. Of the total, 17 were imported cases. (NEWSIS/Handout via Xinhua)