caption: Italian-operated cruise ship the Costa Atlantica is anchored at a port in Nagasaki, southern Japan, Thursday, April 23, 2020. The Costa Atlantica docked since late January is struck by an onboard coronavirus outbreak in which dozens of crew members found to have infected, sending health officials in the southern Japanese city almost free of the virus scrambling to find clues to how the infections started on the ship. (Kyodo News via AP)