The Chinese-ruled city's health department said on Wednesday 90 percent of the passengers were Hong Kongers and no mainland Chinese were on board. Previously, three mainland Chinese that had been on the ship between Jan. 19 and 24 were found to have contracted the virus.
The World Dream ship, operated by Dream Cruises, was denied entry in the southern Taiwan port of Kaohsiung on Tuesday. On Monday, the ship visited Taiwan's northern Keelung port.
It was not clear how long passengers and crew would be kept on the ship.