Argentina probes rodent source after three hantavirus deaths on Atlantic cruise

*TL;DR: Argentina is capturing and testing rodents in southern Ushuaia to determine if they caused three deaths from hantavirus on an Atlantic cruise; WHO reports eight cases, three confirmed.

Context A cruise ship stranded off Cape Verde faced a hantavirus outbreak that claimed the lives of a Dutch couple and a German traveler. Health officials from Argentina announced a field mission to the far‑south region of Ushuaia, the area the Dutch couple visited before boarding.

Key Facts - Three passengers have died from hantavirus, identified as a Dutch couple and a German national. - The World Health Organization (WHO) reported eight suspected cases as of 6 May, with three confirmed by laboratory testing. - Argentina has logged 101 hantavirus infections since June 2025, roughly double the count for the same period in 2024. - The Ministry of Health will trap rodents, the primary carriers of the Andes virus—a South American hantavirus that can cause fatal lung disease—and test them for viral RNA. - WHO director Maria Van Kerkhove emphasized that human‑to‑human spread requires very close contact, a risk level far lower than that of COVID‑19 or influenza. - Climate warming is expanding habitats for rodent species that host the virus, contributing to the rise in cases.

What It Means The Argentine investigation targets a probable zoonotic source—rodents that may have contaminated the couple’s environment before they boarded. Capturing and testing these animals will clarify whether the cruise outbreak originated locally or elsewhere. Because hantavirus spreads primarily through inhalation of aerosolized rodent droppings, the general public on the ship faces a low transmission risk unless they share confined spaces with infected individuals.

For travelers, the practical steps are clear: avoid contact with rodent droppings, maintain cabin hygiene, and seek medical attention for fever, muscle aches, or breathing difficulty after exposure. Ship operators should reinforce rodent control measures and provide crew training on early symptom recognition.

Looking Ahead Watch for WHO updates on the genetic sequencing of the virus from Argentine rodents and any guidance changes for cruise lines operating in South American waters.