Outbreak timeline

MV Hondius Hantavirus Outbreak Timeline

A source-linked chronology of the 2026 MV Hondius Andes virus outbreak, from the voyage and first reported symptoms through official updates and the current monitoring window.

Event Timeline

  1. Earliest reported illness onset

    WHO later reported illness onset among cases occurred between 6 and 28 April 2026.

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  2. WHO notified of cluster

    A cluster of severe respiratory illness aboard MV Hondius was reported to WHO.

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  3. WHO publishes first Disease Outbreak News

    WHO reported seven cases, including two laboratory-confirmed hantavirus cases and three deaths.

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  4. CDC issues MV Hondius statement

    CDC said the risk to the American public was extremely low and linked readers to hantavirus and Andes virus information.

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  5. WHO update identifies Andes virus

    WHO reported eight total cases, including six confirmed and two probable cases, with all confirmed cases identified as Andes virus.

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  6. MV Hondius arrives in Tenerife

    The ship arrived at the port of Granadilla, Tenerife, for disembarkation and repatriation.

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  7. WHO reports 11 cases and 3 deaths

    WHO reported 11 cases among passengers or crew: 9 confirmed Andes virus infections, 2 probable cases, and 3 deaths.

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  8. ECDC daily update keeps total at 11 cases

    ECDC reported 11 total cases: 8 confirmed, 2 probable, 1 inconclusive, 0 suspected, and 3 deaths, with no new cases or deaths since the previous update.

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  9. Australian passengers land for quarantine

    Australian CDC reported that six MV Hondius passengers landed at RAAF Base Pearce and moved to the Bullsbrook Centre for National Resilience; none had tested positive at the time of the update.

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  10. Canada reports one presumptive positive case

    PHAC reported one presumptive positive Andes virus case among returning Canadian passengers, with the traveller isolated in hospital and clinically stable.

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  11. Canada confirms the MV Hondius-linked case

    PHAC confirmed one Canadian MV Hondius passenger positive through laboratory testing; a travelling partner tested negative and no further Canadian cases had been identified.

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  12. ECDC keeps total at 12 cases

    ECDC reported 12 total cases: 9 confirmed, 2 probable, 1 inconclusive, 0 suspected, and 3 deaths, with no new deaths since the previous update.

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  13. MV Hondius arrives in Rotterdam

    ECDC reported that MV Hondius arrived in Rotterdam with 27 crew members on board after passenger disembarkation and repatriation.

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  14. WHO DON604: 13 cases, 3 deaths, Rt 0.7

    WHO published its fourth Disease Outbreak News. As of 27 May 2026, 13 total cases (11 laboratory-confirmed Andes virus, 2 probable) and 3 deaths (case fatality ratio 23%) were reported. Three additional confirmed cases since 13 May (one each from Canada, the Netherlands, and Spain, identified through contact follow-up and routine weekly testing); a previously inconclusive U.S. case tested negative on 15 May and was removed from the count. More than 600 contacts (53% high-risk) are monitored across 32 countries, territories and areas. The effective reproduction number was estimated at 0.7 as of 22 May, indicating declining transmission.

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How to Read the Timeline

Timeline entries preserve what official sources reported at that point in time. Later entries can reclassify cases as confirmed, probable, inconclusive, or suspected.

For the current headline count, use the homepage and the MV Hondius outbreak page, not older historical entries. Country-specific entries link to the corresponding response pages.

Timeline Sources