Oceania Insignia, operating an 11-night cruise from Montreal to Boston, has reported a norovirus outbreak that affected 74 passengers—approximately 11.6 % of the 637 guests onboard—and one crew member.
The cruise, which departed on October 16th, 2025 and is scheduled to conclude at Boston on October 27th, encountered symptoms of acute gastroenteritis including vomiting and diarrhoea.
According to the operator, the outbreak prompted activation of U.S. Centers for Disease Control and Prevention-approved sanitation protocols. Oceania Cruises confirmed that the vessel’s Sanitation Officer initiated the procedures and that all guests displaying symptoms were being treated, while the crew increased cleaning and requested isolation of affected individuals.
The CDC stated it is monitoring the situation remotely and conducting a review of the ship’s outbreak response and sanitation measures.
Norovirus is highly contagious and remains the leading cause of vomiting and diarrhoea outbreaks in enclosed environments such as cruise ships. As previously noted by the CDC, symptoms typically last one to three days, but infected individuals may continue to spread the virus for several days afterwards.
For more Oceania Insignia incidents and accidents see the ship's CruiseMinus page.