The May 2026 Hantavirus outbreak on a cruise ship

WHO reports a multi‑country cluster of Andes hantavirus linked to a Dutch‑flagged cruise ship. As of 8 May 2026, eight cases (six confirmed, two probable) and three deaths (case fatality ratio 38%) have been detected among passengers and crew, with patients evacuated to South Africa, the Netherlands, Switzerland, and Germany. Case 1 likely acquired the infection in Argentina, with subsequent limited human‑to‑human transmission on board. International Health Regulations focal points are coordinating contact tracing, medical evacuation, and laboratory confirmation; WHO currently rates global risk as low but shipboard risk as moderate and advises 42‑day monitoring and quarantine only for high‑risk contacts. WHO concludes that this Andes hantavirus (ANDV) cluster is serious for those exposed on the ship, but the overall global public‑health risk is low, with the shipboard risk rated moderate. Human‑to‑human transmission is considered limited to close, prolonged contact and is judged containable with current measures (early detection, isolation,...