One guest aboard Quantum of the Seas tested positive for coronavirus after checking in with medical team on board, the ship's operator Royal Caribbean International said in a statement.

The ship resumed cruises last week, offering short cruises from Singapore and only to residents of Singapore.

“We worked closely with the government to develop a thorough system that tests and monitors all guests and crew and follows public health best practices. That we were able to quickly identify this single case and take immediate action is a sign that the system is working as it was designed to do,” the company pointed out

“We identified and isolated all guests and crew who had close contact with this guest, and each of those individuals have subsequently tested negative for the virus,” it said.

The ship would return to port today in accordance with government protocols, and will debark guests after a review of contact tracing is completed.

“We are in communication with the Singapore government, and appreciate their guidance as we work together to protect the health and safety of our guests and crew,” the company commented.