The Cunard Cruise Line ship departed Fort Lauderdale, Florida, on Jan. 22.

Nearly 140 people have fallen sick during a gastrointestinal illness outbreak on a three-week Queen Victoria cruise, according to the Centers for Disease Control and Prevention.

The Cunard Cruise Line ship departed Fort Lauderdale, Florida, on Jan. 22.

Overall, 123 passengers and 16 crew members have reported being ill during the voyage as of Thursday, according to the CDC. The cases are for the entire voyage and do not represent the number of active cases, the agency said.

The predominant symptoms include diarrhea and vomiting, the CDC said. The cause of the outbreak is unknown, according to the CDC.

There are 1,824 passengers and 967 crew members on the ship in total, according to the CDC.