Japan's health ministry says six more people on a cruise ship quarantined near Tokyo are infected with the new coronavirus.
The number of cases found on the Diamond Princess has risen to 70, excluding a Hong Kong man who tested positive for the virus after he disembarked.
Japan's health ministry officials have confirmed the first two cases of coronavirus infection without any symptoms in the country. They say the cases without signs of infection are the first to be made public outside of China.
The ministry confirmed that three evacuees from the Chinese city of Wuhan have the new type of coronavirus.
Japan's Chief Cabinet Secretary Yoshihide Suga says the country will continue taking steps to prevent the spread of pneumonia that is caused by a new strain of coronavirus.
Suga spoke to reporters on Wednesday. He said Japan has to be more vigilant against a possible outbreak in the country, as the disease is spreading in China.