Beijing: The death toll from China's coronavirus outbreak soared to 722 on Saturday, as Hong Kong imposed a mandatory quarantine on mainland arrivals to block the spread of an epidemic that has caused global panic. With 86 more people dying in mainland China—the highest one-day jump so far—the toll was closing in on the 774 killed worldwide during the 2002-2003 SARS epidemic.

A Japanese man in his 60s with a suspected coronavirus infection also died in hospital in Wuhan, the Japanese foreign ministry said, adding that it was "difficult" to confirm if he had the illness. The epidemic has prompted the government to lock down cities home to tens of millions of people, as anger mounts over its handling of the crisis, especially after a whistleblowing doctor fell victim to the virus. Vice Premier Sun Chunlan, on a visit to quarantined Wuhan this week, instructed officials to take a "wartime" approach as they implement drastic measures that include combing the city for feverish residents.