This is not another Covid
In the waters off Tenerife, a Dutch cruise ship carrying nearly 150 people became the center of an international health response after three passengers died from the Andes virus — the only hantavirus strain known to pass between humans. The World Health Organization's director-general traveled to Spain to oversee a carefully choreographed offshore evacuation, as contact tracing stretched across continents from Argentina to Singapore to a remote South Atlantic island. The event raises an enduring question that follows every outbreak: how far does a virus travel before the world notices, and how much of that distance can ever truly be retraced?
- Three passengers are dead and six confirmed infections have been recorded aboard the MV Hondius, making this an active outbreak of one of the few hantavirus strains capable of human-to-human transmission.
- At least one infected passenger disembarked before the ship reached the Canary Islands, boarding a flight from Johannesburg and dying in a hospital there the next day — setting off contact tracing across multiple countries.
- Suspected or monitored cases have now emerged in Spain, Singapore, and the remote settlement of Tristan da Cunha, while a KLM flight attendant who had contact with the deceased passenger was tested and cleared.
- Regional authorities refused to allow the ship to dock, forcing an offshore evacuation with sealed transit zones, nationality-grouped departures, and a maritime exclusion zone to prevent any contact with the local population.
- WHO officials and Spanish ministers are working to reassure the public that risk to the wider community remains low, with Tedros himself writing an open letter to Canary Islands residents stating plainly: 'This is not another Covid.'
On a Sunday morning in May, the MV Hondius approached the waters off Tenerife carrying nearly 150 people and a confirmed outbreak of the Andes virus — a form of hantavirus and the only strain known to spread reliably between humans. Three passengers had already died, including a Dutch couple and a German woman. Six of eight suspected cases aboard had tested positive, and the WHO's director-general, Tedros Adhanom Ghebreyesus, had traveled to Spain to oversee the response personally.
The ship had departed Ushuaia, Argentina, on April 1 for a transatlantic crossing. Somewhere along that route, the virus had taken hold. Argentine health officials suggested the incubation period made Ushuaia an unlikely origin point, but the source remained unclear. What was already known was that one infected passenger had left the ship before it reached the Canary Islands, been removed from a Johannesburg-to-Amsterdam flight before departure, and died in a Johannesburg hospital the following day. That brief time aboard the aircraft had triggered a chain of contact tracing now spanning continents — a flight attendant tested negative, a woman in eastern Spain was hospitalized with symptoms, two former passengers in Singapore remained under quarantine despite negative tests, and British authorities were investigating a suspected case on Tristan da Cunha, a South Atlantic settlement of roughly 220 people.
At the port of Granadilla de Abona, white tents lined the quay and security forces had cordoned off sections of the dock, yet the surrounding town carried on with an almost ordinary calm. WHO pandemic preparedness director Maria Van Kerkhove explained that while everyone aboard was classified high-risk, the danger to the wider public remained low. Regional authorities had refused to allow the ship to dock directly, so the evacuation would unfold offshore between Sunday and Monday — passengers screened, disembarked in nationality groups, and transferred immediately to aircraft through sealed transit zones, with a maritime exclusion zone enforced around the vessel.
What remained unresolved was whether the contact tracing efforts across Argentina, Spain, Singapore, and the British Overseas Territories would reach everyone who had been exposed during the ship's long voyage and its stops. The virus's incubation period meant carriers could move through airports and board flights before symptoms appeared. The offshore operation at Tenerife was designed to contain what was already known — but whether the virus had already seeded new chains of transmission in the spaces between countries was a question that would take weeks, perhaps months, to answer.
The MV Hondius was approaching the waters off Tenerife on a Sunday morning in May when the scale of what had unfolded aboard became impossible to ignore. Nearly 150 people remained on the Dutch-flagged vessel, and three of them were already dead. The ship carried something that had killed before and could kill again—the Andes virus, a form of hantavirus and the only strain known to jump reliably from one human to another. By the time the ship reached Spanish waters, the outbreak had drawn the attention of the World Health Organization's director-general, Tedros Adhanom Ghebreyesus, who had traveled to Spain to oversee the evacuation himself.
The three who died included a Dutch couple and a German woman. Six of eight suspected cases aboard had tested positive for the virus, confirming what health officials had feared: this was not a contained incident but an active outbreak with the potential to spread further. The ship had departed Ushuaia, Argentina, on April 1 for a transatlantic crossing toward Cape Verde. Somewhere along that route, the virus had found its way among the passengers. Provincial health officials in Argentina suggested the incubation period made it unlikely the disease had originated in Ushuaia, but the exact source remained unclear. What was certain was that at least one infected passenger had already left the ship before it reached the Canary Islands. She had boarded a flight from Johannesburg to the Netherlands on April 25, only to be removed before departure. She died in a Johannesburg hospital the next day.
That single passenger's brief time on the aircraft had set off a chain of contact tracing that now stretched across continents. A KLM flight attendant who had contact with her developed mild symptoms but later tested negative. A woman in eastern Spain who had been on the same Johannesburg-to-Netherlands flight was now isolated in a hospital, showing symptoms and awaiting test results. In Singapore, two former passengers from the ship had tested negative but remained under quarantine. British authorities were investigating a suspected case on Tristan da Cunha, a remote settlement in the South Atlantic with a population of roughly 220 people. The virus had become a problem not just for those still aboard the ship, but for health systems across multiple countries trying to trace and contain its spread.
At the port of Granadilla de Abona in Tenerife, preparations had been underway since Saturday. White tents lined the quay. Security forces had cordoned off sections of the dock. Yet the atmosphere in the surrounding area remained oddly ordinary. Residents continued shopping, swimming, and sitting in cafés. David Parada, a lottery vendor, captured the local mood: there was worry about potential danger, but he saw little genuine alarm among the people around him. The WHO's epidemic and pandemic preparedness director, Maria Van Kerkhove, had sought to explain why. Everyone aboard the ship was classified as a high-risk contact, she said, but the risk to the wider public and to residents of the Canary Islands remained low. Tedros himself had written an open letter to local residents with a blunt reassurance: "This is not another Covid."
The evacuation would not happen at the dock. Regional authorities had refused permission for the ship to dock directly. Instead, the vessel would remain offshore while passengers underwent screening and disembarkation between Sunday and Monday—a window officials said offered suitable weather. The MV Hondius was expected to arrive at 4:30 a.m. GMT, with passengers and a limited crew beginning to leave around 7 a.m. local time. Once disembarked, they would be transferred immediately to aircraft. Spanish ministers had announced strict controls: no contact between passengers and the local population. Travelers would depart in groups organized by nationality. All transit areas would be sealed off. A maritime exclusion zone would be enforced around the vessel. The operation was designed to move people off the ship and out of the Canary Islands as quickly and as cleanly as possible, leaving no opportunity for the virus to spread further into the community.
What remained uncertain was how the outbreak had begun and whether the contact tracing efforts underway in Argentina, Spain, Singapore, and the British Overseas Territories would identify everyone who had been exposed. The ship's voyage had been long and its stops numerous. The virus's incubation period meant that people could carry it without knowing, could board flights and move through airports before symptoms appeared. For now, the focus was on the immediate evacuation and on monitoring the suspected cases already identified in hospitals and quarantine facilities around the world. The operation at Tenerife would determine whether the outbreak could be contained to those already known to be infected, or whether the brief time the virus had spent in the wider world—on aircraft, in airports, in the spaces between countries—had already seeded new chains of transmission that would take weeks or months to fully understand.
Notable Quotes
We classify everybody on board as what we call a high-risk contact, but the risk to the wider public and residents of the Canary Islands remained low.— Maria Van Kerkhove, WHO epidemic and pandemic preparedness director
There are worries there could be a danger, but honestly I don't see people being very concerned.— David Parada, lottery vendor in Tenerife
The Hearth Conversation Another angle on the story
Why did they keep the ship offshore instead of letting it dock normally?
Because they wanted to eliminate any chance of the virus spreading into the local population. If passengers walked through the terminal, used bathrooms, waited in areas where residents might be—that's exposure. Keeping the ship at sea meant they could control every single point of contact.
But three people were already dead. Wasn't it too late for containment?
The deaths were tragic, but they happened aboard. What mattered now was preventing new infections among the 150 still living. And preventing anyone else in the world from getting it. That's why they were tracing people across continents—a woman in Spain, people in Singapore, someone on a remote island in the Atlantic.
The WHO director flew there personally. That seems like a big deal.
It signals that this is serious enough to warrant his direct attention, but also that they believe it's manageable. If they thought it was spiraling out of control, the message would be different. He was there to reassure people and to oversee the operation—to show that the world's health authorities were on top of it.
What about the people who were on that flight with the infected woman?
That's the nightmare scenario. One person boards a plane, sits for hours in a confined space, and potentially exposes dozens of others. That's why the contact tracing was so urgent. They had to find everyone who was near her, test them, isolate them if necessary.
Did they know where the virus came from originally?
Not really. The ship had left Argentina in April, but officials thought it was unlikely the disease started there based on the incubation period. It could have come aboard at any port, from any passenger. That's part of what made it frightening—the source was still a mystery.