Royal Caribbean said that a guest on the Quantum of the Seas, shown here Wednesday in Singapore, tested positive for coronavirus after checking in with its medical team. The ship returned to port in accordance with government protocols.

The Quantum of the Seas cruise ship is docked at the Marina Bay Cruise Center Wednesday, Dec. 9, 2020 in Singapore. Royal Caribbean said in a statement that a guest on the Quantum of the Seas “tested positive for coronavirus after checking in with our medical team.” The ship returned to port in accordance with government protocols. (AP Photo/Danial Hakim)