Confirmed cases
0
Laboratory-confirmed Andes-virus infections in the cluster.
Deaths
0
Two on board; one shortly after disembarkation.
Cluster case-fatality
0%
Provisional. Consistent with published Andes-virus CFR (35 – 40 %).
U.S. under observation
0
Across 7 states and the UNMC biocontainment / quarantine units.
Surveillance signal
Where this is happening
2026 is the active outbreak (MV Hondius / Andes virus). Switch to any year from 1993 – 2023 to view CDC-reported U.S. case data, or choose All years for the full surveillance record.
Recent events
2026 MV Hondius cluster — WHO, CDC and ECDC bulletins.
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Records
CDC surveillance records matching the current filter.
| # | Onset | State | FIPS | Outcome |
|---|
Case counts
Annual case totals across the full CDC surveillance record.
Survived
Died
Unknown
United States
Passenger monitoring, May 2026
Persons under public-health observation following disembarkation from the MV Hondius. Figures reflect official statements from state health departments and the University of Nebraska Medical Center.
| State | Site / authority | People | Notes |
|---|
Regional context
Concurrent endemic activity, 2026
Background hantavirus burden outside the cluster. The surge in Southern Cone activity is being linked to climate-driven rodent population increases.
Clinical reference
Andes virus — clinical overview
For reference only. This information does not constitute medical advice. Consult a qualified healthcare professional for diagnosis and treatment.
Incubation
Case-fatality ratio
Early phase (1 – 6 days)
Cardiopulmonary phase
Person-to-person transmission
When to seek emergency care
Public health
Prevention and safe clean-up
Recommendations summarised from CDC and ECDC guidance. Aerosolised rodent excreta are the primary route of human infection.
Reporting
Public-health reporting
Clinicians — United States
Hantavirus is a nationally notifiable condition under the U.S. National Notifiable Diseases Surveillance System (NNDSS). Suspected and confirmed cases must be reported to the relevant state or territorial health department, which in turn reports to CDC. Refer also to CDC Health Alert Network Notice HAN 00528 (May 2026).
Clinicians — Europe
Hantavirus infection is reportable to national surveillance systems and to ECDC under Decision 1082/2013/EU on serious cross-border threats to health. Consult the ECDC Threat Assessment Brief dated 6 May 2026.
General public
If you travelled aboard the MV Hondius or have other suspected exposure, contact your healthcare provider or your state, provincial or national health authority. In a medical emergency in the United States, call 911.
Methodology
Data sources
- World Health Organization — Hantavirus cluster linked to cruise ship travel, Multi-country. Disease Outbreak News, 2026-DON599 / 2026-DON600.
- U.S. Centers for Disease Control and Prevention — Health Alert Network Notice HAN 00528, 2026 Multi-country Hantavirus Cluster Linked to Cruise Ship.
- European Centre for Disease Prevention and Control — Hantavirus-associated cluster of illness on a cruise ship: ECDC assessment and recommendations, 6 May 2026.
- U.S. CDC — Reported Cases of Hantavirus Disease (cumulative 1993 – 2022 and NNDSS provisional 2026 weekly tables).
- Pan American Health Organization — Hantavirus Pulmonary Syndrome in the Region of the Americas, Health Information Platform.
- Ministerio de Salud de la Nación (Argentina) and Instituto de Salud Pública (Chile) — national surveillance bulletins, May 2026.
- U.S. CDC — Clinical Overview of Hantavirus Disease and Cleaning Up After Rodents.
- U.S. CDC — Hantavirus surveillance microdata (1993 – 2023), available from cdc.gov/hantavirus. Released to the public domain as a U.S. Government work.
Methodology. Cluster figures reflect the latest WHO Disease Outbreak News, CDC HAN and ECDC Threat Assessment Brief at the as-of date displayed in the page header. Background endemic figures are taken from national public-health bulletins. Geo-coordinates for events are approximate capital-city or principal-city locations. Surveillance data are inherently provisional and subject to revision.
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