Andes virus outbreak on cruise ship kills 3, prompts global health alert

Three passengers died (Dutch couple and German woman); eight suspected cases with 38% case fatality ratio among confirmed infections; passengers and crew under medical observation.
The virus is not that contagious that it easily jumps from person to person
A WHO spokesman explaining why Andes virus, despite its rarity and severity, poses limited risk to the general public.

In the vast and interconnected web of modern travel, a rare virus has surfaced aboard a Dutch cruise ship in the South Atlantic, reminding humanity that the boundaries between remote wilderness and global society are thinner than we imagine. Six passengers aboard the MV Hondius have been confirmed infected with Andes virus — the only hantavirus known to pass between humans — and three have died, setting off a coordinated international response. Health authorities are careful to note that the risk to the broader public remains low, yet the outbreak quietly illuminates how swiftly an uncommon pathogen can follow the routes we have built to connect the world.

  • Three people are dead and six confirmed infections have been recorded aboard a 150-person cruise ship, with a case fatality rate of 38 percent among those confirmed ill.
  • The virus has already escaped the ship's hull — a deceased passenger's wife briefly boarded a commercial flight in Johannesburg, triggering surveillance of contacts in Spain, South Africa, and the remote island of Tristan da Cunha.
  • The CDC has activated a level 3 emergency response while the WHO rates global risk as low but considers the threat moderate for those still aboard, with two international health experts already on the vessel conducting assessments.
  • The MV Hondius is racing toward Tenerife for a carefully choreographed offshore evacuation — passengers transferred by tender, bused to the airport, and repatriated before worsening weather closes the window between Sunday and Monday.
  • WHO Director-General Tedros is personally traveling to Tenerife to oversee the operation, while dockworkers protest the ship's arrival and a YouTuber aboard reports that masked passengers are holding their nerves, if not their distance.

The MV Hondius, a Dutch-flagged vessel carrying around 150 passengers and crew, has become the center of an international health emergency after six confirmed cases of Andes virus were identified aboard, resulting in three deaths — a Dutch couple and a German woman. Andes virus is the only known hantavirus strain capable of spreading directly between humans, though such transmission remains rare. The case fatality rate among confirmed infections stands at a sobering 38 percent.

The ship departed Ushuaia, Argentina on April 1 for a transatlantic voyage. Early suspected cases emerged during the journey, and two crew members who tested positive were evacuated to the Netherlands for treatment. The outbreak did not remain contained to the vessel: the wife of the first victim briefly boarded a KLM flight in Johannesburg before being removed, and died the following day in a South African hospital. Spanish authorities are now monitoring a woman who sat two rows behind her on that flight and has since been hospitalized with symptoms, while a South African passenger from the same flight remains asymptomatic in Barcelona.

The CDC has designated the event a level 3 emergency response, and the WHO — while assessing global public risk as low — considers the risk moderate for those still aboard. Crucially, some passengers who shared cabins with infected individuals did not fall ill, suggesting the virus does not transmit easily even in close contact. Two international health experts are already on the ship conducting a risk assessment.

The Hondius is expected to reach Tenerife on Sunday, where it will anchor offshore. Passengers will be ferried to land and bused to the airport for repatriation flights organized by Britain, the United States, and other nations. The evacuation must be completed before deteriorating weather arrives Monday. Local dockworkers protested the ship's approach, reflecting community unease, while WHO Director-General Tedros is traveling to Tenerife personally to coordinate the response.

The outbreak has also cast a shadow over Tristan da Cunha — one of the world's most isolated inhabited islands, with a population of roughly 220 — where a suspected case has been identified following the ship's earlier port call. The episode serves as a quiet but pointed reminder that rare pathogens and modern travel routes are an uneasy combination, and that even the most remote corners of the world are no longer truly beyond reach.

The MV Hondius, a Dutch-flagged cruise ship carrying roughly 150 passengers and crew, has become the site of a rare viral outbreak that has killed three people and triggered an international health alert. As of May 8, the World Health Organization confirmed six cases of Andes virus—the only known strain of hantavirus capable of spreading directly between humans—out of eight suspected infections aboard the vessel. Three passengers have died: a Dutch husband and wife and a German woman. The case fatality rate among confirmed infections stands at 38 percent.

Andes virus typically circulates among rodents and rarely jumps to people. When it does, human-to-human transmission is exceptionally uncommon, which is why this outbreak has drawn urgent attention from global health authorities. The ship departed Ushuaia, Argentina on April 1 for a voyage across the Atlantic toward Cape Verde. Three suspected cases emerged during the journey, including two crew members who tested positive for the virus. They were evacuated to the Netherlands for treatment; a third person tested negative but remains under observation.

The U.S. Centers for Disease Control and Prevention has classified the outbreak as a level 3 emergency response—the lowest tier of emergency activation—while the WHO has assessed the risk to the global population as low. However, the organization considers the risk to passengers and crew aboard the ship to be moderate. A WHO spokesman emphasized that while Andes virus is dangerous to those infected, the virus does not spread easily from person to person. Notably, some passengers who shared cabins with infected individuals did not contract the illness, suggesting transmission is not inevitable even in close quarters.

The outbreak has extended beyond the ship itself. A Dutch woman who was the wife of the first person to die briefly boarded a KLM flight from Johannesburg to the Netherlands on April 25 before being removed before takeoff. She died the following day in a Johannesburg hospital. A flight attendant who came into contact with her later showed mild symptoms but tested negative for hantavirus. Spanish authorities are monitoring a woman from eastern Spain who was two rows behind the deceased passenger on that same flight and has developed symptoms; she is hospitalized in isolation. A South African woman who was also on the flight remains asymptomatic in South Africa after spending a week in Barcelona.

The ship is expected to arrive at the Spanish Canary Island of Tenerife on Sunday, where it will anchor offshore but not dock. Passengers will be transferred to shore by smaller vessel and then by bus to the airport for evacuation to their home countries. Britain and the United States have announced repatriation flights. The evacuation must occur between Sunday and Monday due to expected adverse weather conditions afterward. Dockers in Tenerife protested Friday against the ship's arrival, reflecting local anxiety about the outbreak.

WHO Director-General Tedros Adhanom Ghebreyesus is traveling to Tenerife on Saturday to coordinate the evacuation and ensure cooperation between Spanish health and interior ministries. Two healthcare workers—an expert from the European Centres for Disease Control and a WHO representative—are already aboard the ship conducting a risk assessment. YouTuber Kasem Ibn Hattuta, traveling on the Hondius, reported that passengers were reassured by the arrival of medical personnel and that morale remained relatively stable, with people wearing masks indoors and maintaining distance from one another.

British health authorities have identified a suspected case on Tristan da Cunha, one of the world's most isolated settlements with a population of around 220 people. The cruise ship had called at several remote British islands in the South Atlantic during its voyage. The outbreak underscores the vulnerability of isolated communities and the speed with which modern travel can spread rare pathogens across continents. While health officials stress that the general public faces minimal risk, the incident has prompted heightened surveillance and response protocols across multiple countries.

This is a dangerous virus, but only to the person who's really infected, and the risk to the general population remains absolutely low.
— WHO spokesman Christian Lindmeier
We finally left Cape Verde which was a relief for everyone on board, specially knowing that our sick colleagues are finally getting the medical care they need.
— YouTuber Kasem Ibn Hattuta, passenger on MV Hondius
La Conversación del Hearth Otra perspectiva de la historia
Inventor

Why is this particular virus getting so much attention when the WHO says the global risk is low?

Model

Because Andes virus is the only hantavirus strain that can spread directly from person to person. That's the anomaly. Most hantaviruses stay in rodent populations. The fact that it jumped to humans and then moved between humans on a ship—that's what triggered the alert.

Inventor

But the WHO spokesman said it's not very contagious. So what's the actual danger?

Model

The danger is real for the people infected—38 percent of confirmed cases have died. But he's right that it doesn't spread easily. Some people shared cabins with infected passengers and never got sick. It's dangerous if you catch it, but catching it requires close contact with someone actively infected.

Inventor

Why did the woman on the plane die so quickly after being removed from the flight?

Model

She died the following day in a Johannesburg hospital. We don't know her exact condition or how advanced her infection was by then. But hantavirus can progress rapidly once symptoms appear, and she was already symptomatic enough to be removed from the aircraft.

Inventor

What does it mean that the ship won't be allowed to dock in Tenerife?

Model

It means authorities are treating the vessel as a potential source of contamination. Passengers will be ferried to shore on smaller boats rather than the ship pulling into port. It's a precaution—keeps the infected vessel separate from the general population and infrastructure.

Inventor

Is there any chance this spreads to Tristan da Cunha?

Model

There's a suspected case there now, but the ship called at remote British islands in the South Atlantic before heading to Tenerife. Tristan da Cunha has only 220 people. If the virus establishes itself in such an isolated, small community, it could be catastrophic because there's nowhere to go and limited medical resources.

Inventor

What happens to the passengers after they land in Tenerife?

Model

They're being evacuated to their home countries on repatriation flights arranged by their governments. Britain and the United States have already announced flights. The evacuation has to happen Sunday or Monday before weather deteriorates. After that, they'll be monitored for symptoms in their home countries.

Contáctanos FAQ