Health Officials Track Dozens Who Left Hantavirus-Stricken Ship After First Fatality Health authorities are tracking passengers who left a cruise ship before a hantavirus outbreak was detected. Investigations in Argentina suspect the virus may have been contracted before boarding. Contact tracing for departing passengers was not initiated until after the first fatality.

• Health authorities are tracking passengers who disembarked a cruise ship with a hantavirus outbreak.
• The outbreak was detected after the first passenger died on board.
• Argentine investigators are looking into a possible origin in a southern town.
• A Dutch couple is suspected of contracting the virus during a bird-watching trip before boarding the ship.
• Contact tracing for passengers leaving the ship was not done until after the first fatality.