The Dutch foreign ministry confirmed that a British, German and Dutch national had now been taken from the virus-hit ship.
Some passengers have been evacuated from the MV Hondius cruise ship, off Cape Verde.
The MV Hondius, which departed from Argentina on 1 April, had an outbreak of rodent-spread hantavirus on board.
Three passengers on the ship have died and several more are either ill or displaying symptoms.
The cruise ship is expected to depart Cape Verde to the Canary Islands following the evacuation.
The US president's message that both sides "must take their time" with negotiations comes as reports suggest an agreement is close.
Officers stormed the building days after the party vowed to defy a court ruling removing its leaders.
A search operation has so far rescued 24 people with no deaths reported at the site, in a city near the capital Manila.