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Last update
8 Sep 2026 · 12:06 UTC
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2026 MV Hondius Andes virus outbreak

Ended
Apr 6, 2026 – Jul 2, 2026ArgentinaSpecies: Andes

About this outbreak

Andes orthohantavirus (ANDV) cluster aboard the Dutch-flagged expedition cruise ship MV Hondius, which left Ushuaia, Argentina on 1 April 2026 with 147 people from 23 countries. The presumed single spillover happened ashore in Patagonia, where the long-tailed pygmy rice rat (Oligoryzomys longicaudatus) is the reservoir; Andes virus is the only hantavirus with documented person-to-person transmission, and at least one household pair aboard was infected that way. Thirteen cases (12 laboratory-confirmed, one probable) and three deaths were reported across eight countries and territories as the exposed cohort dispersed via Saint Helena, Tristan da Cunha and Tenerife. WHO declared the outbreak over on 2 July 2026.

Outbreak story

A curated, narrated reconstruction of how this outbreak unfolded — editorial, not live surveillance. Each point links to its source.

Epidemic curve

Daily new confirmed cases and deaths over time, with a 7-day trailing average and cumulative totals.

Apr 1, 2026 – Jul 2, 2026

Cases in range

13

Deaths in range

3

Case fatality rate

23.1%

Cumulative totals

  • Cumulative cases
  • Cumulative deaths
20100
Apr 1May 17Jul 2
Cumulative totals
DateCumulative casesCumulative deaths
Apr 1, 202600
Apr 2, 202600
Apr 3, 202600
Apr 4, 202600
Apr 5, 202600
Apr 6, 202600
Apr 7, 202600
Apr 8, 202600
Apr 9, 202600
Apr 10, 202600
Apr 11, 202600
Apr 12, 202600
Apr 13, 202600
Apr 14, 202600
Apr 15, 202600
Apr 16, 202600
Apr 17, 202600
Apr 18, 202600
Apr 19, 202600
Apr 20, 202600
Apr 21, 202600
Apr 22, 202600
Apr 23, 202600
Apr 24, 202600
Apr 25, 202600
Apr 26, 202600
Apr 27, 202600
Apr 28, 202600
Apr 29, 202600
Apr 30, 202600
May 1, 202600
May 2, 202610
May 3, 202610
May 4, 202632
May 5, 202642
May 6, 202673
May 7, 202673
May 8, 202673
May 9, 202673
May 10, 202673
May 11, 202673
May 12, 202683
May 13, 202693
May 14, 202693
May 15, 202693
May 16, 202693
May 17, 202693
May 18, 2026103
May 19, 2026103
May 20, 2026103
May 21, 2026103
May 22, 2026113
May 23, 2026113
May 24, 2026113
May 25, 2026123
May 26, 2026123
May 27, 2026123
May 28, 2026123
May 29, 2026123
May 30, 2026123
May 31, 2026123
Jun 1, 2026123
Jun 2, 2026123
Jun 3, 2026123
Jun 4, 2026123
Jun 5, 2026123
Jun 6, 2026123
Jun 7, 2026123
Jun 8, 2026123
Jun 9, 2026123
Jun 10, 2026133
Jun 11, 2026133
Jun 12, 2026133
Jun 13, 2026133
Jun 14, 2026133
Jun 15, 2026133
Jun 16, 2026133
Jun 17, 2026133
Jun 18, 2026133
Jun 19, 2026133
Jun 20, 2026133
Jun 21, 2026133
Jun 22, 2026133
Jun 23, 2026133
Jun 24, 2026133
Jun 25, 2026133
Jun 26, 2026133
Jun 27, 2026133
Jun 28, 2026133
Jun 29, 2026133
Jun 30, 2026133
Jul 1, 2026133
Jul 2, 2026133

Daily new cases

  • Daily
  • 7-day average
530
Apr 1May 17Jul 2
Daily new cases
DateDaily7-day average
Apr 1, 202600
Apr 2, 202600
Apr 3, 202600
Apr 4, 202600
Apr 5, 202600
Apr 6, 202600
Apr 7, 202600
Apr 8, 202600
Apr 9, 202600
Apr 10, 202600
Apr 11, 202600
Apr 12, 202600
Apr 13, 202600
Apr 14, 202600
Apr 15, 202600
Apr 16, 202600
Apr 17, 202600
Apr 18, 202600
Apr 19, 202600
Apr 20, 202600
Apr 21, 202600
Apr 22, 202600
Apr 23, 202600
Apr 24, 202600
Apr 25, 202600
Apr 26, 202600
Apr 27, 202600
Apr 28, 202600
Apr 29, 202600
Apr 30, 202600
May 1, 202600
May 2, 202610.1
May 3, 202600.1
May 4, 202620.4
May 5, 202610.6
May 6, 202631
May 7, 202601
May 8, 202601
May 9, 202600.9
May 10, 202600.9
May 11, 202600.6
May 12, 202610.6
May 13, 202610.3
May 14, 202600.3
May 15, 202600.3
May 16, 202600.3
May 17, 202600.3
May 18, 202610.4
May 19, 202600.3
May 20, 202600.1
May 21, 202600.1
May 22, 202610.3
May 23, 202600.3
May 24, 202600.3
May 25, 202610.3
May 26, 202600.3
May 27, 202600.3
May 28, 202600.3
May 29, 202600.1
May 30, 202600.1
May 31, 202600.1
Jun 1, 202600
Jun 2, 202600
Jun 3, 202600
Jun 4, 202600
Jun 5, 202600
Jun 6, 202600
Jun 7, 202600
Jun 8, 202600
Jun 9, 202600
Jun 10, 202610.1
Jun 11, 202600.1
Jun 12, 202600.1
Jun 13, 202600.1
Jun 14, 202600.1
Jun 15, 202600.1
Jun 16, 202600.1
Jun 17, 202600
Jun 18, 202600
Jun 19, 202600
Jun 20, 202600
Jun 21, 202600
Jun 22, 202600
Jun 23, 202600
Jun 24, 202600
Jun 25, 202600
Jun 26, 202600
Jun 27, 202600
Jun 28, 202600
Jun 29, 202600
Jun 30, 202600
Jul 1, 202600
Jul 2, 202600

Daily new deaths

  • Daily
  • 7-day average
210
Apr 1May 17Jul 2
Daily new deaths
DateDaily7-day average
Apr 1, 202600
Apr 2, 202600
Apr 3, 202600
Apr 4, 202600
Apr 5, 202600
Apr 6, 202600
Apr 7, 202600
Apr 8, 202600
Apr 9, 202600
Apr 10, 202600
Apr 11, 202600
Apr 12, 202600
Apr 13, 202600
Apr 14, 202600
Apr 15, 202600
Apr 16, 202600
Apr 17, 202600
Apr 18, 202600
Apr 19, 202600
Apr 20, 202600
Apr 21, 202600
Apr 22, 202600
Apr 23, 202600
Apr 24, 202600
Apr 25, 202600
Apr 26, 202600
Apr 27, 202600
Apr 28, 202600
Apr 29, 202600
Apr 30, 202600
May 1, 202600
May 2, 202600
May 3, 202600
May 4, 202620.3
May 5, 202600.3
May 6, 202610.4
May 7, 202600.4
May 8, 202600.4
May 9, 202600.4
May 10, 202600.4
May 11, 202600.1
May 12, 202600.1
May 13, 202600
May 14, 202600
May 15, 202600
May 16, 202600
May 17, 202600
May 18, 202600
May 19, 202600
May 20, 202600
May 21, 202600
May 22, 202600
May 23, 202600
May 24, 202600
May 25, 202600
May 26, 202600
May 27, 202600
May 28, 202600
May 29, 202600
May 30, 202600
May 31, 202600
Jun 1, 202600
Jun 2, 202600
Jun 3, 202600
Jun 4, 202600
Jun 5, 202600
Jun 6, 202600
Jun 7, 202600
Jun 8, 202600
Jun 9, 202600
Jun 10, 202600
Jun 11, 202600
Jun 12, 202600
Jun 13, 202600
Jun 14, 202600
Jun 15, 202600
Jun 16, 202600
Jun 17, 202600
Jun 18, 202600
Jun 19, 202600
Jun 20, 202600
Jun 21, 202600
Jun 22, 202600
Jun 23, 202600
Jun 24, 202600
Jun 25, 202600
Jun 26, 202600
Jun 27, 202600
Jun 28, 202600
Jun 29, 202600
Jun 30, 202600
Jul 1, 202600
Jul 2, 202600

OutbreakIndex is an independent project and is not affiliated with WHO, CDC, ECDC, PAHO, or ProMED. All content is aggregated from public sources and is general information — not medical advice, and not a substitute for assessment by a qualified clinician.

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