More than 90 passengers and crew members aboard a Royal Caribbean cruise fell ill during a trip that began in San Diego, United States, on September 19. The Serenade of the Seas ship experienced an outbreak of norovirus, a gastrointestinal infection, before its final stop in Miami, according to information released by the Centers for Disease Control and Prevention (CDC) on Sunday (28).
The CDC reported that 94 passengers and four crew members experienced symptoms such as diarrhea and vomiting during the trip. Other signs associated with the virus include fever, abdominal cramps, muscle aches, and headaches. The ship was carrying 1,874 passengers and 883 crew members, representing less than 4% of occupants infected.
In response to the outbreak, the crew reinforced sanitation protocols and isolated sick individuals, as well as collected samples for laboratory analysis. The company told USA Today that the health and safety of guests and staff are a priority, emphasizing that their cruises exceed public health guidelines for cleaning procedures.
The CDC is monitoring the situation from afar through the Vessel Sanitation Program, evaluating the control measures being taken. The ship’s itinerary included stops in Mexico, Panama Canal, and Colombia, and is expected to conclude in Miami next Thursday, according to CruiseMapper.
This is the 19th outbreak of gastrointestinal diseases on cruises reported in 2025, with 14 of them attributed to norovirus. In the previous year, the virus was present in 15 of the 18 outbreaks reported on tourist ships, according to the CDC.






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