The only exception was on a cruise liner docked in Japan, where 44 new cases were reported, bringing the total there to 218.
There was also no major shift in the coronavirus's pattern of mortality or severity, according to the WHO.
Hubei recorded 242 deaths on Wednesday, the deadliest day of the outbreak.
There was also a huge increase in cases, with 14,840 people diagnosed but most of this was down to Hubei using a broader definition to diagnose people, said Mike Ryan, head of WHO's health emergencies programme.
"This does not represent a significant change in the trajectory of the outbreak," he said.
Outside China there had been two deaths and 447 cases in 24 countries, he said.
On Thursday Japan announced its first coronavirus death - a woman in her 80s who lived in Kanagawa, south-west of Tokyo.
The woman's diagnosis was confirmed after her death and she had no obvious link to China's Hubei province, the epicentre of the outbreak, Japanese media reported.