"Our guests and crew onboard Diamond Princess are the focus of our entire global organization right now, and all of our hearts are with each of them", explained Jan Swartz, Princess Cruises president in a news release.
The epidemic originated in mainland China, where more than 1100 people have now died from the virus.
Ten were Japanese nationals and the others were from 11 countries, including the United States and China.
One of the diagnosed Americans, Rebecca Frasure from OR, spoke with NBC News before being flown to a hospital.
About 3,700 people have been confined aboard the vessel, which was placed under a 14-day quarantine earlier in the week. The total number of those infected with coronavirus on the ship is 130 people.
At the time of the outbreak, the ship was carrying 4,196 passengers and crew members, with the cruise line offering impacted travelers a 50 percent refund and a future credit valued at 50 percent of their voyage due to the alterations in the itinerary.
Kato also revealed there were four people in hospital in serious condition, either on a ventilator or in intensive care. Other passengers remain quarantined in their staterooms.
He was not diagnosed with coronavirus until he left the ship on January 25.
Despite the anxiety on board, one passenger praised the Italian captain for keeping stress levels manageable aboard the ship. But Thai Health Minister Anutin Charnvirakul questioned Wednesday whether that could be known with certainty, while adding he's ready to consider providing medical aid, food and water if asked. At least two report back to us on Facebook that they are symptom-free, ' added the man, who declined to be identified.
"So, basically, I know what's going on before they even tell us from our parents at home ... and, they update us but it's always been very lagged", said Cerullo.
With files from Bloomberg News.