This is not coronavirus. This is a very different virus.
A rare virus carried home by travelers from the ends of the earth has set health authorities on six continents searching for those who may have been touched by it. Three people are dead — a Dutch couple and a German national — after hantavirus took hold aboard the Antarctic cruise ship MV Hondius in late April, scattering across at least twelve countries before anyone knew to sound the alarm. The Andean strain, typically passed from rodents to humans but capable in rare cases of moving between people, has prompted a level 3 emergency response from the CDC and urgent contact tracing from Singapore to Georgia. The world's health institutions are now doing what they always must after a ship sails too far ahead of its own danger: running to catch up.
- Three people are dead and a KLM flight attendant is hospitalized in Amsterdam, illustrating how quickly a single infected passenger can extend a virus's reach far beyond any ship's manifest.
- Passengers from over a dozen nations disembarked at St. Helena on April 24 and dispersed home before the first confirmed case emerged in early May, leaving a weeks-long gap that contact tracers are now racing to close.
- Health agencies in the US, Netherlands, Germany, Singapore, Canada, France, and beyond are monitoring asymptomatic returnees, isolating suspected contacts, and testing anyone who shared space with the ill.
- The WHO and CDC are working to contain public fear alongside the virus itself, stressing that hantavirus does not spread like COVID-19 and that the risk to the general population remains low.
- Dozens of remaining passengers are still aboard the Hondius, bound for the Canary Islands this weekend — their arrival will widen the circle of contact once more, and the WHO is already preparing protocols for that moment.
When health authorities finally identified hantavirus aboard the MV Hondius in early May, the ship had already done its quiet damage. Three people were dead — a Dutch couple believed to be the first cases, who had boarded on April 1, and a German national — and the vessel's passengers had long since scattered to their home countries. The Hondius had called at St. Helena on April 24, and by then the virus was already aboard, invisible and unchecked.
The strain was Andean hantavirus, typically transmitted by rodents but capable, in rare circumstances, of passing between people. Five cases were confirmed and three more suspected. Passengers from at least twelve countries — Britain, the United States, France, Canada, Denmark, Singapore, and others — had disembarked and returned to their lives before anyone knew to warn them. The WHO's Maria Van Kerkhove was careful to draw a line between this outbreak and the pandemic fears it might evoke: 'This is not coronavirus, this is a very different virus.' The CDC classified it a level 3 emergency response nonetheless.
The contact tracing that followed was a portrait of modern outbreak response at full stretch. Georgia, Arizona, California, and Texas were each monitoring returned passengers. Singapore had isolated two residents for testing. A French citizen who had been near an ill passenger was under observation. The Dutch woman who died had been removed from a KLM flight in Johannesburg on April 25 as her condition worsened; a flight attendant who had been near her was later hospitalized in Amsterdam with possible symptoms.
Three patients were evacuated from the ship midweek — two admitted to Dutch hospitals, one transferred to Germany for testing. Among them was expedition guide Martin Anstee, who told reporters he was 'doing OK' but that more tests remained. Oceanwide Expeditions, the ship's operator, was reconstructing every boarding and disembarkation since March 20, calling crew and passengers daily for health checks.
The remaining passengers — none showing symptoms — were still at sea, expected to reach the Canary Islands by the weekend. The WHO was already drafting guidance for their arrival, knowing that when they stepped ashore and flew home, the web of potential contacts would grow wider still.
On Thursday, as health authorities across the globe mobilized to contain an outbreak, the focus narrowed to a single vessel: the MV Hondius, an Antarctic cruise ship where hantavirus had taken hold. Three people were dead—a Dutch couple and a German national—and the virus had already scattered across borders before anyone knew to look for it. Five confirmed cases and three suspected ones meant the ship had become a vector, and now the work was to trace every person who had walked down its gangway.
The Hondius had stopped in St. Helena, a remote island in the South Atlantic, on April 24. By then, the virus was already aboard, though no one knew it yet. Passengers disembarked and dispersed. They came from at least twelve countries: seven from Britain, six from the United States, and others from France, Canada, Denmark, Singapore, and beyond. The first confirmed case wouldn't surface until early May, by which time these travelers had already boarded planes, returned to their homes, resumed their lives. Now health agencies in each country were trying to find them, to monitor them, to prevent what might come next.
The strain identified in several victims was Andean hantavirus, a virus typically spread by rodents but capable, in rare circumstances, of passing between humans. The World Health Organization moved quickly to manage expectations and fear. Maria Van Kerkhove, the WHO's director of epidemic and pandemic management, stood before cameras and made a distinction that seemed necessary: "This is not coronavirus, this is a very different virus." The risk to the general public remained low, she said. The U.S. Centers for Disease Control and Prevention echoed that assessment, though it classified the outbreak as a level 3 emergency response. President Trump, briefed on the situation, told reporters he hoped it was under control. "I hope not," he said when asked if Americans should be concerned.
The contact tracing was already underway. In Georgia, two asymptomatic residents who had returned from the ship were being monitored. Arizona was watching one. California was tracking several. Texas had two residents back home before the outbreak was even identified. In France, a citizen who had been in contact with an ill person was under observation. Singapore had isolated and was testing two residents from the ship. The Dutch woman who had died had been removed from a KLM flight in Johannesburg on April 25 because her condition was deteriorating. She never made it home. A KLM stewardess who had been near her during that flight was now hospitalized in Amsterdam, showing possible symptoms of the virus.
Three patients had been evacuated from the ship on Wednesday. Two were admitted to hospitals in the Netherlands; one was transferred to Germany. Martin Anstee, an expedition guide, was among those hospitalized in the Netherlands. He told reporters he was "doing OK" but that "there are still lots of tests to be done." The German evacuee was not yet confirmed as a case but rather as a contact, undergoing tests at Duesseldorf University Clinic. In Switzerland, a man who had traveled on the cruise tested positive. A Danish citizen had returned home and been advised to self-isolate. In Canada, three citizens who had been on the ship or in contact with symptomatic passengers were asymptomatic but under watch.
Oceanwide Expeditions, the ship's operator, was reconstructing the vessel's movements since March 20, trying to establish which passengers and crew had boarded and disembarked at each stop. The Dutch couple, believed to be the first cases, had boarded on April 1. Crew and passengers who had helped the Dutch woman were being called daily for health checks. The remaining passengers—dozens of them—were still aboard the Hondius, sailing toward the Canary Islands, where they were expected to arrive Saturday or Sunday. None of them showed symptoms. The WHO was preparing step-by-step guidance for their arrival and dispersal, knowing that when they disembarked and traveled home, the circle of contact would widen again.
Notable Quotes
This is not coronavirus, this is a very different virus. This is not the same situation we were in six years ago.— Maria Van Kerkhove, WHO director of epidemic and pandemic management
I hope it was under control. I hope not [that Americans should be concerned].— President Donald Trump, responding to briefing on the outbreak
The Hearth Conversation Another angle on the story
Why does a virus that usually comes from rodents suddenly appear on a cruise ship in the middle of the ocean?
That's the unsettling part. Hantavirus is typically contracted from contact with infected rodent droppings or urine. But someone brought it aboard—either a passenger or crew member was already infected. Once it was on the ship, in close quarters, the rare possibility of person-to-person transmission became real.
So the ship itself wasn't contaminated. It was a person.
Exactly. The Dutch couple who died boarded on April 1. By April 24, when the ship stopped in St. Helena, the virus was already moving through the vessel. But no one knew it yet. People got off the ship and flew home to twelve different countries.
That's the real problem, then. Not the ship. The delay.
Yes. The first confirmed case wasn't identified until early May. By then, passengers had already scattered globally. Now health agencies are trying to find people who left a ship weeks ago and may not even know they were exposed.
Is this going to be another pandemic?
The WHO was careful to say no. They emphasized the risk to the general public is low. Hantavirus isn't like COVID. But they're still treating it as a level 3 emergency, which tells you they're taking it seriously enough not to assume anything.
What happens to the people still on the ship?
They're sailing to the Canary Islands this weekend. None of them have symptoms yet. But when they arrive and disembark, the WHO will be there with protocols, watching to see what happens next.
And the people who've already gone home?
They're being monitored. Daily health checks in some cases. Self-isolation in others. The stewardess who helped the Dutch woman is already hospitalized. Everyone who had contact with a confirmed case is now part of the tracing effort.