On Apr. 2, 2025, Cunard announced a norovirus outbreak had occurred aboard a luxury cruise ship that struck passengers and crew members with more than 240 people reported sick on the 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.

The vessel departed Southampton in the U.K. on March 8 for a nearly month-long cruise to New York and then through the Caribbean, making various stops along the island chain. It is due back in Southampton on April 6.

It’s highly contagious and thrives in places where people gather in close quarters, making cruise ships susceptible to outbreaks. There have been 10 norovirus outbreaks on cruise ships so far this year, the CDC reported.

According to the CDC, this particular outbreak has seen passengers fall ill with vomiting and diarrhea. The health agency says Cunard had stepped up its cleaning and disinfection protocols, and that sick passengers and crew are being quarantined.