Andes hantavirus outbreak on expedition cruise ship MV Hondius: 13 cases, 23% fatality rate, multi-country response underway
By
the International ANDV team
Summary
An outbreak of Andes orthohantavirus (ANDV) has been linked to the Dutch-flagged expedition cruise ship MV Hondius, with 13 cases (12 confirmed, 1 probable) and a 23% case-fatality rate reported as of June 18, 2026. The outbreak affected individuals from 23 nationalities, with cases among 8% of passengers and 5% of crew. A multi-country investigation involving UKHSA and international teams has been launched, requiring medical evacuation, repatriation, contact tracing, isolation, quarantine, and laboratory testing. The source of the outbreak remains under investigation.
Source
bskyAndes hantavirus outbreak on expedition cruise ship MV Hondius: 13 cases, 23% fatality rate, multi-country response underwayeurosurveillance.orgKey quotes
· 4 pulledAs at 18 June 2026, 13 cases (12 confirmed and one probable) of Andes orthohantavirus have been reported (case–fatality: 23%), linked to the Dutch-flagged expedition cruise ship MV Hondius.
The event involved individuals from 23 nationalities and required medical evacuation, repatriation, coordinated international contact tracing, isolation, quarantine and clinical and laboratory testing follow-up.
To date, all cases have been passengers (10/121; 8%) or crew members (3/61; 5%).
Ongoing monitoring and investigations aim to clarify the source of the outbreak, identify risk factors and prevent further spread.
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