The U.S. Centers for Disease Control and Prevention said it was notified by Cunard Line, owner of the Queen Elizabeth 2, on Jan. 11 that some passengers had fallen ill with symptoms associated with norovirus, a virus responsible for gastroenteritis marked by stomach cramps, nausea, vomiting and diarrhea that last two to three days.
The number of sick passengers climbed to 276, from a total 1,652, and 28 of the ship's 1,002 crew also became ill, said Lisa Beaumier, public health analyst with the CDC.