Chinese authorities say the death toll from the new coronavirus now stands at 106, as cases of new infections have almost doubled in a day.
The number of total confirmed cases in China rose to 4,515 as of January 27, up from 2,835 a day earlier.
Travel restrictions have been tightened and wearing masks in public is now mandatory in some cities.
The city of Wuhan is at the epicentre of the outbreak but it has spread across China and internationally.
Wuhan, and the Hubei province it is located in, are already effectively in a lockdown with transport restrictions in and out of the area.
On Monday, authorities in Beijing confirmed a 50-year-old man had died – the first fatality in the Chinese capital from the virus.
The coronavirus causes severe acute respiratory infection and there is no specific cure or vaccine.
Most of the deaths have been in Hubei province with the victims being elderly people or those with pre-existing respiratory problems.
A total of 60 people had been discharged from hospital after recovery, according to Chinese state media.
The World Health Organization (WHO) though said on Monday it remained unclear whether the virus was contagious before symptoms appear.