Hantavirus: A New Challenge in Europe
Well, it’s already here. After passing through Cavo Verde, the MV Hondius cruise ship has anchored in Granadilla de Abona, Tenerife. The situation is concerning, with infected animals and isolated ships, but it’s not entirely unexpected.
The Lack of Preparedness
Despite Europe’s emergency response systems, no country had specific protocols or diagnostic capabilities for a virus that has been causing problems since 2018 and has been in an ‘active outbreak’ in Argentina since 2025. This lack of preparedness raises significant concerns.
Emerging Threat: The Andes Hantavirus
What is happening? Beneath the surface of Europe’s emergency response capability lies a troubling issue. Current surveillance and response protocols are calibrated only for local hantaviruses. They are not designed to address an emerging pathogen like the Andes variant: a strain that has been mutating and moving towards northern Argentina, doubling its historical lethality.
This oversight reflects a troubling clumsiness in handling emerging infectious diseases.
The Nature of the Virus
What happens with the virus? The Andes variant, particularly dangerous, is the only hantavirus where human-to-human transmission has been documented, though this typically requires prolonged close contact. The Ministry of Health defends that “the risk for the general population is very low,” emphasizing the rarity of interpersonal transmission.
This is partially true. However, the reality is that the Andes virus is spreading from its traditional habitats into more populated areas, exemplified by recent cases in Buenos Aires, where 42 infections have been detected this season and a 10-year-old girl tragically lost her life.
Shifts in the Epidemiological Landscape
Indicators point to changing dynamics. For instance, Salta, located far from Patagonia, has recorded the second most cases of the virus. This indicates a worrying trend in geographical distribution.
The Rising Lethality
Another critical dimension is the lethality associated with this variant. Historically around 20%, lethality rates spiked to 33.6% in 2025, suggesting either increased virulence or improved case reporting. Understanding these trends is crucial as we navigate this new threat.
Assessing the Risk
Should we be worried? While experts and health authorities agree the risk to the European populace remains low, the situation involves complexities that cannot be ignored. The outbreak on the MV Hondius serves as a stark reminder that we live in an ‘era of epidemics,’ where factors driving the emergence of infectious diseases are significantly more robust now than before, especially following the COVID pandemic.
What Can Be Done
If the question is what can we do, the answer involves proactive, though somewhat less glamorous, measures. We must not forget the hard-earned lessons from the pandemic. Now is the time to strengthen our public health systems, develop diagnostic capabilities, and create specific protocols to address emerging threats.