Norwegian Cruise Line and CDC examine Legionnaires’ disease reports
The investigation follows diagnoses involving three Norwegian Prima passengers who sailed in May and July 2026.
Norwegian Cruise Line is working with the U.S. Centers for Disease Control and Prevention following reports that three Norwegian Prima passengers who sailed in May and July 2026 were diagnosed with Legionnaires’ disease.
In a September notice, the cruise line said the source of the exposure had not been established. Investigators are examining whether the passengers encountered Legionella bacteria through water systems aboard Norwegian Prima or through another source.
As part of the investigation, Norwegian Cruise Line tested water-related equipment and fixtures on the ship, including hot tubs, showers and faucets. The company said all testing results received at the time of its notice were negative.
Norwegian Cruise Line also said it planned additional testing as the investigation continued. The inquiry remains focused on determining whether exposure was connected to the ship’s water systems or occurred elsewhere.