Officials arrive to take samples from some passengers near a cruise boat docked along the Mekong River bank in Kampong Cham, Cambodia, Wednesday, March 11, 2020. Passengers and crew of the cruise boat that sailed on the Mekong River from Vietnam to Cambodia have been asked to stay onboard by Cambodian health authorities after a British passenger was confirmed to have been infected with COVID-19. (AP Photo/Heng Sinith)

March 11, 2020