Update - 06 May 2026
ESCMID EIS Day 3 update report
05 May 2026
This Situation Report, provides a concise overview of a suspected cluster of hantavirus pulmonary syndrome (HPS) identified aboard a cruise vessel originating from Argentina. As of 04 May 2026, preliminary information from WHO and UN sources indicates a small number of severe respiratory cases, including fatalities, with one laboratory-confirmed hantavirus infection and several additional suspected cases.
The purpose of this report is to inform ESCMID members of the evolving situation, summarise the current epidemiological understanding, and highlight key clinical and public health considerations. While rodent-associated exposure remains the leading hypothesis, investigations are ongoing, and important uncertainties persist regarding the exact transmission dynamics, viral strain, and extent of risk.
Given the potential severity of HPS and the confined setting of a cruise vessel, this event underscores the importance of vigilance, rapid risk assessment, and continued monitoring.
Disclaimer: The information contained in this document reflects what was available as of 04 May 2026, 5 pm (CEST) and may be updated as further relevant information becomes available; the situation remains ongoing.