A total of 125 people aboard a Princess Cruises vessel contracted a highly contagious stomach virus before docking in San Francisco on Thursday, July 2, 2026, according to federal health officials.
The U. S.
Centers for Disease Control and Prevention reported that the norovirus outbreak impacted 102 passengers and 23 crew members on the Ruby Princess during a 20-day round-trip journey to Canada and Alaska.
According to the CDC, the vessel carried 3,032 passengers and 1,144 crew members, and the outbreak was initially reported to the agency on Saturday.
The health agency noted that symptoms include the sudden onset of vomiting, diarrhea, and stomach pain, and the virus has caused seven cruise ship illness outbreaks within CDC jurisdiction so far this year.
Princess Cruises officials stated that the crew enacted immediate countermeasures to contain the illness and sanitize the vessel before its next scheduled voyage.
"Enhanced sanitation protocols across the ship," said Princess Cruises in a statement.
The company added that the vessel would undergo a thorough cleaning and disinfection process prior to its departure later Thursday afternoon.
