Norovirus sickens more than 100 passengers aboard Caribbean Princess cruise

More than 100 passengers and 13 crew members aboard Caribbean Princess reported illness, enough to trigger a federal outbreak notice and renewed scrutiny of how cruise lines handle sanitation when gastrointestinal disease spreads in close quarters. The Centers for Disease Control and Prevention said 102 of 3,116 passengers, or 3.3%, and 13 of 1,131 crew members, or 1.2%, reported sick during the April 28 to May 11 voyage.

The CDC reported the outbreak to its Vessel Sanitation Program on May 7 and identified norovirus as the causative agent. Predominant symptoms were diarrhea and vomiting, the classic signs of an illness that can move quickly through a ship with shared dining rooms, cabins, elevators and high-touch surfaces. The agency’s public outbreak log tracks such incidents when illness reaches at least 3% of passengers or crew on a voyage.

Princess Cruises and the ship’s crew responded by increasing cleaning and disinfection procedures, isolating ill passengers and crew members, and collecting stool specimens for testing. CDC officials were consulted as the Vessel Sanitation Program carried out an environmental assessment and outbreak investigation, the kind of public-health review that measures not only how many people got sick but whether shipboard controls were strong enough to interrupt transmission.

Caribbean Princess was scheduled to arrive in Port Canaveral, Florida, on May 11. The case adds to a busy run of cruise-ship gastrointestinal outbreaks in 2025 and 2026, reinforcing a familiar problem for an industry built around dense, shared indoor spaces. Even after years of heightened awareness about onboard infection control, norovirus remains one of the most persistent operational risks in cruise travel because a single lapse in hygiene can spread through thousands of passengers and crew in a matter of days.

The latest outbreak also follows another recent Princess Cruises norovirus episode. CBS News reported that in March, Star Princess saw 104 guests and 49 crew members report gastrointestinal illness after departing Fort Lauderdale on March 7. Together, the two cases show how repeatedly cruise operators are forced to confront the same public-health test: whether routine cleaning, rapid isolation and reporting rules can keep a contained outbreak from becoming a larger one.