U.S. Tracks Cruise Ship Hantavirus Passengers as New Cases Emerge

Three people have died from hantavirus infection (a Dutch couple and German national), with at least five suspected infections and multiple people under medical observation or isolation.
Passengers were poorly informed about the unfolding situation
A travel vlogger aboard the Hondius described how the captain's reassurances rang hollow as the outbreak unfolded.

A luxury expedition cruise ship has become the unlikely vessel for a rare and sobering chapter in public health history, as the Andes strain of hantavirus — one of the few capable of passing between people — claimed three lives aboard the Hondius and scattered potential carriers across a dozen nations before containment protocols were in place. The outbreak, which began in the waters near Argentina's southernmost city, has forced governments, airlines, and health agencies into a multinational search for passengers who quietly disembarked on a remote Atlantic island weeks after the first death. In the tension between the virus's rarity and its unusual transmissibility, health authorities now face the enduring human challenge of closing a door that was left open too long.

  • Three people are dead — a Dutch couple and a German national — and at least five more are suspected infected, with a flight attendant in the Netherlands now hospitalized for testing, suggesting the outbreak may be reaching beyond the ship's original passenger list.
  • Thirty passengers slipped off the vessel in St. Helena on April 24 without contact tracing, scattering across twelve countries including the United States, creating a weeks-long blind spot in an outbreak involving a virus that can spread person to person.
  • Passengers still aboard describe a ship where the captain declared the vessel 'not infectious' in the same breath as announcing the first death, leaving nearly 150 isolated travelers adrift on information as much as on water.
  • The Canary Islands regional government is resisting the ship's arrival, the CDC and U.S. State Department are tracking six Americans spread across three states, and Argentina is planning 2,500 diagnostic tests in Ushuaia to find where the virus first boarded.
  • Health officials insist the public risk remains low, but the convergence of a rare transmissible virus, a dispersed passenger population, and a possible healthcare worker infection has placed this outbreak in uncharted territory for global disease response.

Health authorities across multiple countries are racing to locate passengers who left a luxury cruise ship without contact tracing, weeks after the first hantavirus death aboard the Hondius. The outbreak — three confirmed deaths, at least five suspected infections — has exposed a critical gap in containment: thirty people disembarked on April 24 at the remote Atlantic island of St. Helena before tracking protocols were established. Among them were six Americans now spread across Arizona, Georgia, and California, alongside citizens from eleven other nations.

What makes this outbreak singular is the strain involved. The Andes variant of hantavirus is one of the only strains capable of spreading between people, elevating what might have been a contained shipboard incident into a multinational public health operation. The WHO and national agencies have stressed that transmission requires close personal contact, but the weeks-long delay in initiating contact tracing has cast a long shadow over those assurances.

The human toll continues to grow in unexpected directions. A British man is hospitalized in South Africa, a suspected case is being treated in Zurich, and a flight attendant in the Netherlands was admitted for testing after a Dutch woman who died from the virus briefly boarded a KLM flight before being removed. Whether the two cases are connected remains unclear.

Passengers still aboard describe an information vacuum. A travel vlogger captured the captain announcing the ship was 'not infectious' immediately after disclosing the first death — a statement that did little to reassure the nearly 150 people now under isolation as the vessel moves toward the Canary Islands, whose regional government has expressed reluctance about accepting it.

Argentina has launched an investigation into the outbreak's origins, planning rodent trapping in Ushuaia and 2,500 diagnostic tests to determine where the virus entered the ship. The United States has mobilized a whole-of-government response through the State Department and CDC. This is the first time hantavirus has ever been documented aboard a cruise ship — and the coming weeks will reveal whether the gap in early tracking allowed the virus to travel further than anyone yet knows.

Health authorities across multiple countries are now racing to locate and monitor dozens of passengers who left a luxury cruise ship without proper contact tracing, weeks after the first death from hantavirus aboard the vessel. The Hondius, operated by Oceanwide Expeditions, has become the center of an urgent international infectious disease response following three confirmed deaths and at least five suspected infections. The outbreak has exposed a critical gap in disease containment: thirty people disembarked on April 24 in St. Helena, a remote Atlantic island, before comprehensive tracking protocols could be established. Among them were six Americans now scattered across Arizona, Georgia, and California, along with citizens from eleven other nations.

The virus in question is the Andes strain of hantavirus, a particularly concerning variant because it can spread between people—unlike most other strains, which require contact with infected rodents. This distinction has elevated the outbreak from a contained shipboard incident to a multinational tracking operation. The World Health Organization and national health officials have repeatedly stated that the risk to the general public remains low and that person-to-person transmission requires close personal contact, such as between household members or couples. Even so, the fact that thirty people left the ship unmonitored weeks after the first death represents a significant lapse in containment.

The three confirmed deaths include a Dutch couple and a German national. A British man is currently hospitalized in South Africa, while a man who disembarked from the ship is being treated in Zurich with suspected hantavirus. On Thursday, a new case emerged when a flight attendant in the Netherlands was admitted to a hospital for testing. Dutch health officials confirmed she was being evaluated for the virus, though they did not disclose whether she was symptomatic. KLM Royal Dutch Airlines revealed that a Dutch woman who died from hantavirus had briefly boarded a flight from Johannesburg to Amsterdam before being removed before takeoff, though it remains unclear whether the hospitalized flight attendant was present on that same flight.

Passengers who remained aboard the Hondius have described a ship where information was sparse and reassurance was hollow. A travel vlogger on board told NBC News that passengers were poorly informed about the unfolding situation. Video he recorded captured the captain announcing that the ship itself was "not infectious" immediately after revealing the first death—a statement that offered little comfort given what was actually happening. Nearly 150 people remain on the vessel under isolation protocols as it travels north from Cape Verde toward the Spanish-controlled Canary Islands, a journey expected to take three to four days. The regional government of the Canary Islands has expressed reluctance about accepting the ship, complicating the logistics of the final leg of the voyage.

The United States has mobilized a coordinated response. The State Department is leading what officials describe as a whole-of-government effort, including direct contact with passengers, diplomatic coordination with other nations, and engagement with health authorities at home and abroad. The CDC stated that it and the State Department are closely monitoring Americans who were on the ship. On Monday, Oceanwide reported that seventeen Americans remained aboard. The company said it was working to establish the whereabouts of all thirty passengers who left in St. Helena and had contacted each of them, though the weeks-long delay in initiating contact tracing raised questions about how thoroughly the effort could succeed.

Argentinian authorities have launched their own investigation into the outbreak's origins. The Hondius began its journey in Ushuaia, Argentina, and officials there plan to conduct rodent trapping operations in the city and carry out 2,500 diagnostic tests in an attempt to identify where the virus entered the ship. Hantavirus infection in humans is extraordinarily rare—the CDC's data show only 890 confirmed cases between 1993 and 2023—and this marks the first time the disease has been documented on a cruise ship. The rarity of the disease, combined with the Andes strain's ability to spread between people, has made this outbreak a singular event in public health records.

Health experts have emphasized that even the Andes strain is not as easily transmitted as airborne diseases like influenza or COVID-19, a distinction meant to temper public alarm. Yet the combination of factors—a deadly virus aboard a vessel carrying hundreds of people, passengers who dispersed across continents before contact tracing began, and the emergence of a possible new case in a healthcare worker—has created a scenario that demands sustained vigilance. The next few weeks will determine whether the outbreak remains contained to those already identified or whether the gap in early tracking allows the virus to spread further.

The Department of State is leading a coordinated, whole-of-government response including direct contact with passengers, diplomatic coordination, and engagement with domestic and international health authorities.
— CDC statement
Passengers were not well informed about the situation on board.
— Travel vlogger aboard the Hondius
A Conversa do Hearth Outra perspectiva sobre a história
Inventor

Why did thirty people leave the ship without being tracked? That seems like the kind of thing that wouldn't happen in a disease outbreak.

Model

It did happen, and it's the central failure here. The first death occurred weeks before those passengers disembarked in St. Helena. By that point, the company should have had protocols in place, but they didn't—or they didn't enforce them. The ship was in the middle of the Atlantic at a tiny, remote island. The company says it's now trying to locate all thirty, but weeks have passed.

Inventor

So the virus can spread person-to-person. How dangerous is that compared to something like COVID?

Model

It's transmissible between people, but only through close contact—like a couple living together, not through the air like flu or COVID. That's why health officials keep saying the public risk is low. But it's still a virus that has killed three people so far, and it's never been seen on a cruise ship before.

Inventor

What about the flight attendant in the Netherlands? Is she connected to the ship?

Model

That's unclear. She's being tested, but officials won't say if she was on the ship or on the flight where a woman with hantavirus briefly boarded. The privacy restrictions make it hard to know if this is a new chain of transmission or something else entirely.

Inventor

Why is Argentina doing rodent trapping in Ushuaia?

Model

Because that's where the ship started its journey. If they can find infected rodents there, they might understand how the virus got aboard in the first place. It's typically a rodent-borne disease, so the ship likely picked it up from the environment somehow.

Inventor

And the Canary Islands don't want the ship to arrive?

Model

The regional government is reluctant. Imagine being a small island and having a ship with 150 isolated passengers heading toward you. Even if officials say the risk is low, the optics and the logistics are complicated. The ship has to go somewhere, though.

Quer a matéria completa? Leia o original em NBC 5 Chicago ↗
Fale Conosco FAQ