The Nikkei Asian Review is tracking the spread of the new coronavirus that originated in the central Chinese city of Wuhan.
Global cases have reached 4,735,622, according to the World Health Organization.
The worldwide death toll has hit 316,289.
To see how the disease has spread, view our virus tracker charts:
Here are the latest developments (Tokyo time):
Thursday, May 21
1:00 a.m. U.S. President Donald Trump says he may again host the G-7 summit in or near Washington, after earlier canceling the in-person meeting amid the novel coronavirus pandemic.
12:34 a.m. A Japanese