The CDC has reported a Norovirus outbreak on Princess Cruises' Caribbean Princess, affecting 115 individuals — 102 passengers and 13 crew members — during the journey from April 28 to May 11. Norovirus can easily spread in the close quarters of cruise ships, leading to symptoms such as vomiting, diarrhea, and dehydration. The CDC's Vessel Sanitation Program mandates thorough disinfection before the ship's next departure. This outbreak occurs as summer cruise bookings in the US reach unprecedented levels.