Royal Caribbean tragedy as 90 passengers sick after norovirus outbreak on cruisePassengers and staff on Serenade of the Seas have been affectedView Image Stock image of a person with a sore stomach (Image: Getty Images)Passengers on a Royal Caribbean cruise have fallen unwell after an outbreak of the highly-contagious norovirus onboard. According to the CDC, symptoms include diarrhoea and vomiting. ‌Royal Caribbean has since 'increased cleaning and disinfection procedures according to their outbreak prevention and response plan', the CDC said. The illness caused 15 of 18 outbreaks on cruise ships in 2024, and 13 out of 14 the year before. "However, CDC data show a newly dominant strain is currently associated with reported norovirus outbreaks on land.