Spain said Monday it had implemented “all measures” to prevent the spread of hantavirus from passengers evacuated from a cruise ship linked to a deadly outbreak, after French and U.S. nationals tested positive for the virus.

A complex repatriation operation from the Canary Islands on Sunday flew out 94 passengers and crew of 19 different nationalities from the Dutch-flagged MV Hondius, which is at the center of an international alert after three passengers died.

Medical teams escorted travelers to an airport on Tenerife under close supervision and following sanitary checks on the ship.

French and U.S. authorities have reported positive tests for hantavirus from one each of their evacuees.

"From the start, all the measures adopted have aimed at cutting the possible chains of transmission... all measures for prevention and control of transmission have been applied," the Spanish health ministry said in a statement.