According to the Centers for Disease Control and Prevention, a norovirus outbreak on the Rotterdam, a Holland America Line cruise ship, resulted in 81 passengers and 8 crew members becoming ill during the voyage. The cruise ship had a total of 2,593 passengers and 1,005 crew members on board.
The outbreak occurred on the sailing from December 28th, 2025, through January 9th, 2026. Holland America reported the outbreak on January 8th, 2026. In total, about 3.1% of the passengers were ill during the voyage, and 0.8% of the crew were ill during the voyage.










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