The early cases are known from Wuhan city where two people died due to respiratory illness.
This virus is prompting new airport screenings in Canada, and in the United States.
The Chinese Center for Disease Control and Prevention, a national level body, issued a large infographic on Saturday on social media, urging people not to believe rumours about the virus and stressing it is not SARS.
The clinical signs and symptoms of coronavirus infection are mainly fever with a few patients having difficulty in breathing, the Indian travel warning said.
The new numbers rolled in just as Canadian and US health authorities both began screening passengers from Wuhan at three of each country's biggest airports. Indonesia, Malaysia and the Philippines say they have strengthened screening at all points of entry in response to the outbreak, as well.
Officials have been providing updates on new cases nearly daily since Jan 11, and the number reported yesterday was the highest since then.
There is no "clear evidence of sustained human-to-human transmission", since neither the patient in Japan nor the one in Thailand had visited the seafood market, according to the World Health Organization.
Wuhan, the Chinese city at the centre of the outbreak, which started in December, confirmed four new cases on Friday.
Health officials closely monitored the friends and family members of the sick patients and noted that none of them had come down with the virus, suggesting that the virus isn't transmitted between people, but rather from animals to people.
Chinese scientists say the illness is in the same family as the deadly severe acute respiratory syndrome known as SARS but they say it does not appear as lethal.
This "does not rule out the possibility of limited human-to-human transmission, but the risk of continuous human-to-human transmission is low", Li said.
There have been two cases found outside China in Japan and Thailand since the outbreak in Wuhan City.
"Entry screening alone is not a guarantee against the possible importation of this new virus but is an important public health tool during periods of uncertainty and part of a multilayered government response strategy", said the statement.
The researchers estimated there have been 1,700 cases of the coronavirus, and up to 4,000 cases.
Infectious disease experts at Imperial College London have calculated that the number of cases in Wuhan alone is approaching 1,700.
The WHO's China office said the analysis was helpful and would help officials plan the response to the outbreak.