A USA warship has been staying at sea, not allowed to make a port call, for more than two months because of an outbreak of a viral infection among the crew.
The warship was quarantined at sea after 25 sailors were diagnosed with the disease, with the most recent case reported on 9 March.
The ship is now operating in the Persian Gulf in the Middle East.
The U.S. Navy told CNN that port calls were canceled, effectively quarantining the ship at sea while medical teams worked to get the situation under control.
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All seven hundred and three military personnel aboard the ship have received measles, mumps and rubella (MMR) booster vaccinations, according to the US Navy's Fifth Fleet headquartered in Bahrain.
Parotitis is an inflammation of the parotid glands, located between the ear and jaw.
The US warship made a port call in early January in Romania before travelling back to the Mediterranean and heading towards the Middle East, where it is now quarantined. Living and work spaces were disinfected. Since the first case was detected at the end of a year ago, 24 of the 25 infected individuals have returned to duty.
Officials are now considering whether it would be safe to make a port call.
The command of the ship, which carries elements of the 22nd Marine Expeditionary Unit on board, had to modify some of its scheduled training in order to deal with the outbreak's impact, the Fifth Fleet added.