China reported a sharp decrease in new deaths and cases of the coronavirus on Saturday but a doubling of infections in South Korea and 10 new cases in Iran added to unease about its rapid spread and global reach. Mainland China had 397 new confirmed cases of coronavirus infections on Friday, down from 889 a day earlier, but only 31 cases were outside of the virus epicenter of Hubei province, the lowest number since the National Health Commission started compiling nationwide data a month ago.
