Disney Wonder Passengers Report Norovirus Outbreak on Alaska Sailing
The itinerary was not altered, and Disney Wonder has a listed capacity of up to two thousand four hundred fifty-six passengers and nine hundred forty-seven crew.
Passengers aboard Disney Wonder reported a norovirus outbreak during the ship’s June 29-July 6 Alaska round trip from Vancouver, saying multiple guests became sick and crew increased cleaning late in the voyage. CruiseMapper listed the sailing as departing Vancouver, transiting the Alaska panhandle and returning to Vancouver on July 6. The itinerary was not altered.
The Reddit thread did not include an official passenger or crew case count, leaving the scale unclear aboard a Disney Cruise Line ship with a listed capacity of 1,754 to 2,456 passengers and 947 crew. The CDC’s Vessel Sanitation Program has posted seven gastrointestinal illness outbreaks in its jurisdiction in 2026, six of them attributed to norovirus.
Passenger accounts focused on illness and cleaning
One passenger wrote that she and her husband both became ill and were “down for a solid 24H.” She said they had been careful about handwashing but noticed crew cleaning the restroom outside Cadillac Lounge with a chemical odor she associated with vomit cleanup.
Another guest said someone vomited in a restroom near Tiana’s Place during dinner. The same Reddit discussion included speculation by other users about possible food handling, but no source of transmission was established in the accounts. The posts did not provide a detailed shipboard sanitation protocol from Disney Cruise Line.
Norovirus causes severe vomiting and diarrhea, according to the CDC. CDC material identifies norovirus as the primary cause of cruise ship outbreaks and says transmission is mainly person-to-person, not through potable water.
CDC thresholds and recent cruise cases
For vessels under VSP jurisdiction, including voyages that call at both U.S. and foreign ports, the CDC publicly posts gastrointestinal outbreak notices when at least 3% of passengers or crew report symptoms to ship medical staff. The agency can also post an outbreak below that threshold if it determines there is public health significance.
In a separate June 12-July 2 sailing, CDC data for Princess Cruises’ Ruby Princess listed 107 sick passengers and 25 sick crew. The 2026 VSP table also includes outbreaks aboard National Geographic Sea Bird, Caribbean Princess, Insignia and Star Princess, with National Geographic Sea Bird listed twice.
The 2026 count follows a 2025 total that included a record 18 norovirus outbreaks and five other cruise gastrointestinal outbreaks with other or unknown causes. VSP’s operations also changed in 2025, when all full-time CDC cruise ship inspectors in the program were laid off, leaving one epidemiologist still in training; CDC said the program continues to monitor and assist with gastrointestinal outbreaks.
Ships docked in U.S. ports undergo unannounced VSP health inspections, with a minimum passing score of 85. Historical CDC data from 2008 to 2014 put reported gastrointestinal illness at 0.18% of cruise passengers and 0.15% of crew.
CDC says the risk to the American public from listed cruise outbreaks is extremely low. VSP defines a pending acute gastroenteritis outbreak at roughly 4.5 cases per 1,000 passengers per day, with cumulative reporting thresholds of at least 2% among passengers and 3% among crew.
