A worker wearing protective gears sprays disinfectant against the new coronavirus in front of the Daenam Hospital in Cheongdo, South Korea, Friday, Feb. 21, 2020. The Church of Jesus Christ of Latter-day Saints have issued new guidelines for missionaries in countries affected by the deadly virus on Friday, including in South Korea where missionaries have been told to "self-isolate." (Lim Hwa-young/Yonhap via AP)