BALTIMORE (AP) -- The Centers for Disease Control and Prevention says passengers on a cruise ship that sailed out of Baltimore became sick on board during two consecutive voyages.
According to the CDC website, about 100 passengers and crew members on the Grandeur of the Seas became ill with vomiting and diarrhea. It left April 5 for a seven-day cruise.
A spokeswoman for ship owner Royal Caribbean Cruises in an email confirmed the illnesses and said a norovirus was believed to be the cause.
The CDC also reported that about 100 passengers and crew members became ill on the Grandeur during its sailing from March 28 to April 5.
The agency says three of its staff will board the ship when it returns to Baltimore Saturday to investigate the most recent outbreak.