The species of Andes hantavirus that has been in the news is not likely to affect us in India immediately. So far, that species has existed only in South America and on one cruise ship. Right now, large-scale outbreaks are probably not coming for us. The real threat is not hantavirus.  The real threat is the deliberate, systematic dismantling of global and national pandemic preparedness by anti-science regimes in the US and India. The hantavirus outbreak on the cruise ship MV Hondius is not an incoming plague – it's a dress rehearsal, a trial. And we are failing it on every measure.

The people now shaping the US pandemic response include Robert F Kennedy Jr., Secretary of the U.S. Department of Health and Human Services, a vaccine denier and conspiracy theorist, and Jay Bhattacharya, Director of the National Institutes of Health of the United States, who built his career on downplaying COVID and attacking public health measures. Their appointments are not a shift in approach—they are an assault on science itself. Trump's policy decisions are gutting preparedness: mRNA vaccine research cut, cruise ship inspectors fired, and the US pulled out of the WHO – abandoning its role as the agency's largest funder and the world's key coordinator of global health.

In India, the Modi government is creating a parallel disaster. The government spending on public health is currently scandalously low. Disease surveillance is poor, data transparency is worse, and scientific voices are routinely sidelined. During COVID, the government fought and bullied about mortality estimates rather than saving lives during COVID. The same country that earlier supplied the world with vaccines is today compromised and, in addition, does not even protect its own people with basic early warning systems.

But germs don't honour boundaries. A virus that leaps from rodent to human, then from human to human in a crowded party or cruise ship dining hall, has no interest in national pride. What pandemic control needs, what we need, is global cooperation, not global competition. What we're getting instead is a coordinated, ideological wrecking bulldozer aimed at the very infrastructure that kept us safe from the last pandemic. This is the background to the MV Hondius outbreak.

HANTA GOES SAILING 

On 1st April 2026, the Dutch-flagged cruise ship MV Hondius left Ushuaia, Argentina, with 147 passengers and crew. A 70-year-old Dutch passenger presented with fever, abdominal pain and diarrhoea. He died on 11th April. The ship went on. The dead man's wife was one of the 30 or so passengers who left the ship at Saint Helena on 24th April. She flew to Johannesburg, collapsed at the airport and died a short time later. A British passenger was taken ill on 22nd April and flown to Johannesburg on 29th April. On 2nd May, tests showed that his blood was positive for Andes hantavirus (ANDV) RNA. Samples taken from the woman's body a day later also tested positive for hantavirus. Eight cases were identified by 10th May (six confirmed and two probable). The ship finally reached Spain's Canary Islands, where passengers disembarked under strict protocols. Two Indian crew members were flown to the Netherlands for quarantine.  They have no symptoms. The WHO has said this was not the start of a pandemic. But ANDV species is the only known hantavirus that is passed from person to person. A cruise ship is just perfect for that, with shared cabins and dining halls.

GETTING TO KNOW THE VIRUS 

Hantaviruses are spherical and have a lipid envelope, protein spikes and single-stranded RNA. Detergents and heat inactivate them, but they can survive in the environment for more than 10 days at room temperature. ANDV is transmitted from person to person via airborne particles and body fluids. It enters cells through receptors, which are abundant on cells that line blood vessels. After an incubation period of about 1–8 weeks, there is a sudden onset of non-specific symptoms such as high fever, severe muscle pain (thighs, hips and back), headache and gastrointestinal upset. Within days, this progresses to Hantavirus Cardiopulmonary Syndrome (HCPS) with severe respiratory distress, cough, low blood pressure, and shock. Death occurs in 30-50% of cases.  There is no approved vaccine or antiviral for ANDV, and treatment is only supportive. That means watching, giving oxygen and putting the patient on ECMO, a life-support machine that takes over the work of the heart and lungs.

In Africa, Asia and Europe, Old World hantaviruses (e.g., Hantaan, discovered during the Korean War of 1950-1953) cause kidney disease and are transmitted solely from rodents to humans. Old World hantaviruses cause hemorrhagic fever with renal syndrome (HFRS). HFRS primarily affects the kidneys and blood vessels. They are only passed from rodents to people. In 1988, South Korean virologist Ho-Wang Lee developed a vaccine, Hantavax, which was licensed by the South Korean government in 1990. This works only against Old World Hantaviruses. The New World Hantaviruses are those discovered in the US and South America (Sin Nombre and ANDV). Of these, ANDV isolated in Argentina in 1995 is the only hantavirus transmitted from human to human.

In the 2018-2019 ANDV outbreak in Epuyén, Argentina, the initial case attended a birthday party with 100 guests. Five close contacts fell sick, one infected six more, and the wife of the first case infected ten others at her husband's funeral. In total, 34 cases, 11 deaths. Strict quarantine put an end to the spread. Genome sequencing showed very low variation; the virus was genetically stable as it went from human to human. It was spread by social contact in jam-packed parties and close quarters. Like now on the cruise ship.

In the present case, international laboratories in South Africa, Senegal, the Netherlands and Switzerland helped to sequence the ANDV viral genomes within days. All sequenced cases are very similar, consistent with a single spillover before departure and limited human-to-human transmission on board. There were no rats on board the ship. The working hypothesis is that the first case was infected in South America before embarkation.

POLITICS OF ISOLATION 

Some epidemiologists advise sending passengers home to self-monitor: "Low risk, rare transmission." Virologists, however, are less certain. In Epuyén, Argentina imposed a 40-day quarantine on contacts – a politically sensitive measure for a country that has known US-created military dictatorships. "Not only are these decisions of public health, but they are political decisions too," a virologist from Argentina told the Science magazine.

The US officially left the WHO in January 2026. The global polio eradication program is suffering due to that. HIV, TB and malaria programmes in Africa are scrambling for financial support. The withdrawal severely compromises the ability to share data in real time across continents as required for the MV Hondius outbreak. In India, the lack of a robust, independent public health surveillance system – weakened by a decade of neglect and a scientific hostility to ideology – means that when the next spillover happens, we may not know until it's too late.

But was hantavirus a trial? Yes.  Did we succeed or fail? This time, the virus is not out of control. But the systems that maintained it are bleeding out. International protocols are breaking up. And the people now running the world's most powerful health institutions are, in many cases, the very people who think pandemic preparedness is unnecessary. That is not a way to be safe but a recipe for the next catastrophe. Sadly, germs don't know any borders. What they need is global cooperation and not global competition. On that front – the only front that ultimately matters – we are failing badly.