KLM Royal Dutch Airlines Flight Attendant Hospitalized with Suspected Andes Strain Hantavirus

(HAARLEM, NETHERLANDS) — A KLM Royal Dutch Airlines flight attendant from Haarlem was hospitalized at Amsterdam UMC on May 7 with suspected hantavirus infection after brief contact with a passenger later confirmed to have the Andes strain.

The attendant is being tested in isolation after Dutch health officials linked the exposure to a sick woman who had traveled on a KLM flight from Saint Helena to Johannesburg. KLM issued an urgent alert on May 6 to passengers on that flight’s manifest.

The case centers on a 69-year-old Dutch woman who died in late April after a long South American and Antarctic cruise itinerary. Her infection was confirmed by PCR nine days after her death, and health officials later identified the Andes strain.

That strain matters because it is the hantavirus subtype known for human-to-human transmission. Public health teams in the Netherlands and South Africa are now tracing contacts tied to the Saint Helena-Johannesburg leg.

The woman was part of a Dutch husband-and-wife couple who arrived in Argentina on Nov. 27, 2025. They later traveled through Chile and Uruguay, returned to Argentina on March 27, 2026, and boarded the MV Hondius in Ushuaia on April 1.

Her husband died first, according to the timeline released by Argentine health officials on May 6. She later fell ill, left the ship at Saint Helena, and was evacuated to Johannesburg, where she died around April 28.

The KLM crew member helped the woman during the flight, but the passenger had already been removed before departure because of illness. Dutch authorities confirmed the exposure and placed the attendant under observation for testing.

The public-health response has stretched across three countries and a cruise ship. South African authorities are tracing contacts from the flight. Dutch officials are monitoring the attendant. The Argentina Health Ministry published the couple’s itinerary on May 6.

WHO reports also pointed to an earlier episode involving the MV Hondius. Three people, including two crew members and one suspected case, were evacuated from the quarantined ship off Cape Verde to the Netherlands.

No additional infections among contacts had been confirmed as of May 7. That matters for passengers and crew on the manifest, because the contact window appears narrow and tied to a single sick traveler.

Hantavirus is not spread the same way as influenza or COVID-19, and most strains do not move between people. The Andes strain is the exception that keeps public-health teams alert, especially after close contact in enclosed spaces.

PCR testing remains the standard used to confirm infection, and that testing took nine days after the passenger’s death in this case. That delay shows how quickly a travel exposure can turn into a cross-border tracing effort.

Airlines do not usually alter mileage earning during health investigations, and there has been no indication of changes to Flying Blue accrual or redemption rules. The bigger issue is operational caution: manifest tracing, crew monitoring, and possible follow-up notices if additional symptoms appear.

Other carriers operating long-haul and remote-area service follow similar protocols, particularly on flights that connect ships, evacuation points, and hub airports. Those routes often carry small passenger counts but high contact complexity.

Passengers who received KLM’s May 6 alert should follow any local health instructions and watch for fever, fatigue, headache, or breathing trouble. Anyone on the manifest should keep contact details current, because tracing teams often work fastest through direct notification.