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Viking Ocean and Viking Expedition, along with Crystal Cruises, are ranked as the cleanest cruise lines in U.S. waters, according to a March 2026 study based on CDC surprise sanitation inspections. The fleets earned an average cleanliness score of 99 out of 100.
Four key features of the cleanest cruise lines are:
1. Stringent Sanitation Protocols: Daily deep cleaning of cabins and public areas, with high-touch surface disinfection multiple times per day.
2. Advanced Air Technology: Utilization of UV-C light to sanitize air in public spaces, designed to kill 99% of airborne viruses and bacteria.
3. Food Safety Standards: Rigid, continuous sanitation in galleys, strict monitoring of food temperatures, and rapid, frequent cleaning of buffet areas.
4. Technology-Driven Hygiene: Increased use of sensor-operated public doors and automated handwashing stations, especially near dining areas.