The confirmed zero patient in this Hantavirus outbreak has been identified.

It was a 70-year-old Dutchman, Leo Schilperoord, who is a bird enthusiast and researcher.
The infection likely occurred before boarding the ship.
He and his wife were birdwatching at a landfill in Argentina, where rodents carrying the Andes virus strain may have been present.
The approximate timeline is as follows.
On April 1st, Leo and his wife boarded a cruise ship from Argentina.
Around April 6th, Leo developed symptoms such as fever, headache, abdominal pain, and diarrhea.
On April 11th, Leo died aboard the cruise ship.
After that, his wife, Mirjam, disembarked with her husband’s remains and traveled to South Africa.
On April 26th, Leo’s wife also developed symptoms and died.
On May 4th, the first case of Hantavirus infection in this incident was officially confirmed.
On May 8th, the WHO reported that there were a total of 8 cruise-related cases, 6 of which were confirmed as Hantavirus infections, all of the Andes virus strain, resulting in 3 deaths.
On May 10th, the cruise ship had arrived near Spain’s Canary Islands, and passengers began disembarking in batches for health checks, quarantine, and repatriation.