A norovirus outbreak aboard a luxury cruise ship has struck passengers and crew members hard, with more than 240 people falling sick on the Cunard Line’s Queen Mary 2. The Centers for Disease Control (CDC) said in an outbreak report that 224 of the ship’s 2,538 passengers have fallen ill from the virus, as well as an additional 17 staff members.

A norovirus outbreak on a Princess Cruises ship last week caused 82 people to suffer vomiting and diarrhea on their nearly three-week-long journey from California to Florida, health officials said.

The infectious gastrointestinal virus has swept through the Queen Mary 2, flagship vessel of Cunard Line, affecting more than 240 people during a return voyage across the Atlantic.