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Hantavirus daily brief — June 5, 2026

Verified synthesis of events reported on June 5, 2026 regarding the MV Hondius hantavirus outbreak. All sources are cited within the brief.

🇦🇷 Argentina — the search for the outbreak's origin expands to Mendoza province (west), after Tierra del Fuego (far south), health authorities announced on 5 June 2026 (franceinfo with AFP). Biologists from the Malbrán Institute, jointly with the US CDC, will run a rodent-trapping and testing campaign in Malargüe (Mendoza) from 8 to 12 June. Scientists are still analysing the more than 150 rodents captured in mid-May around Ushuaia and in Tierra del Fuego National Park. Mendoza has no confirmed circulation of the “Andes” strain, but a local university report judges that “the risk is not zero” given the potential presence of the vector rodent Oligoryzomys longicaudatus. 🧭 The outbreak's origin remains unidentified: the “patient zero”, a Dutch passenger who has since died, had travelled across Argentina for four months (with incursions into Chile and Uruguay) before boarding on 1 April in Ushuaia. 📊 Tally unchanged: 13 cases (11 confirmed + 2 probable), 3 deaths, 7 affected countries.

Site-wide tally as of June 5, 2026

13 cases (11 confirmed + 2 probable), 3 deaths, 7 countries affected. Risk to the general population: low (OMS).

See the interactive map and full tally →