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CDC Investigates Gastrointestinal Illness Outbreak on Navigator of the Seas

Stool samples from 134 passengers and seven crew members remain under analysis by the CDC Vessel Sanitation Program

Overview

  • A gastrointestinal illness sickened 134 of the 3,914 passengers and seven of the 1,266 crew during the July 4–11 round-trip cruise from Los Angeles to Mexico
  • Affected individuals reported vomiting, abdominal cramps and diarrhea as their primary symptoms
  • The CDC’s Vessel Sanitation Program has not yet identified the causative agent pending laboratory testing of collected stool specimens
  • Royal Caribbean implemented heightened cleaning, disinfection and isolation protocols in response to the outbreak
  • This incident is one of 18 gastrointestinal illness outbreaks on cruise ships reported to the CDC so far in 2025, matching last year’s total