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Suspected norovirus hits 400 on two Christmas cruises

The Cunard superliner 'Queen Mary 2' berths in Sydney on March 7, 2012. An outbreak of vomiting and diarrhea has sickened more than 400 vacationers and crew members aboard two Christmas-time cruises in the Caribbean, the CDC said Saturday.An outbreak of vomiting and diarrhea has sickened more than 400 vacationers and crew members aboard two Christmas-time cruises in the Caribbean, the CDC said Saturday. The CDC said it was still conducting lab tests to determine the pathogen, but it indicated it might be Norovirus, which is highly contagious and typically transmitted from person to person.