Andes hantavirus outbreak on MV Hondius leads to quarantine, deemed low pandemic risk

Health authorities reported an outbreak of Andes hantavirus on the cruise ship MV Hondius, which departed Ushuaia, Argentina. As of early May, eleven cases linked to the vessel were identified by the European Centre for Disease Prevention and Control – eight confirmed infections, two probable and one inconclusive – resulting in three deaths among the confirmed cases. The virus, a member of the hantavirus family, can cause severe hantavirus pulmonary syndrome with fatality rates up to 50% in the Americas.

The World Health Organization and national health officials have stressed that the risk to the broader public remains low. Dr. Aileen Marty, an infectious‑disease expert, explained that human‑to‑human transmission of Andes virus is rare and typically requires prolonged close contact. Quarantine measures were enacted in Western Australia for passengers who tested negative, and contact‑tracing efforts are ongoing in Argentina, the Netherlands, South Africa and other affected locations. Experts emphasise that, unlike COVID‑19, hantavirus patients are usually too ill to spread the virus widely, and existing public‑health tools are sufficient to contain the outbreak.