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2026 Cruise Ship-associated Andes Hantavirus Outbreak and Public Health Response
1Division of Infectious Diseases, Department of Internal Medicine, Incheon Medical Center, Incheon, Korea.
Public Health Weekly Report
|July 11, 2026
Summary
Andes virus (ANDV) can spread between people, causing severe illness. A cruise ship outbreak highlighted how closed environments amplify transmission, emphasizing the need for rapid response and surveillance.
Area of Science:
- Infectious Diseases
- Epidemiology
- Public Health
Background:
- Andes virus (ANDV) is a hantavirus known for human-to-human transmission and high fatality rates in South America.
- Hantavirus cardiopulmonary syndrome (HPS) presents a significant public health challenge.
Purpose of the Study:
- To review epidemiological and clinical features of hantavirus infections.
- To examine transmission patterns in confined, high-density settings.
- To assess public health strategies using a 2026 ANDV cruise ship outbreak as a case study.
Main Methods:
- Review of publicly available reports from global health organizations (WHO, ECDC, PAHO, KDCA).
- Analysis of relevant scientific literature.
- Case study of the 2026 MV Hondius ANDV outbreak.
Main Results:
- A 2026 outbreak on the MV Hondius involved 13 cases (11 confirmed, 2 probable) and 3 deaths.
- Genomic analysis indicated human-to-human transmission onboard following zoonotic spillover.
- Contributing factors included shared cabins, communal spaces, and close contact among older individuals.
Conclusions:
- Pathogens with limited human-to-human transmissibility can amplify in closed, high-density environments.
- Prompt identification, international coordination (e.g., IHR), and risk communication are crucial for outbreak control.
- Preparedness requires travel history assessment, surveillance, and rapid diagnostics.
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