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Primary sources

Every document we used to compile the count, with date, publisher, type and a direct link. No paywalled references; no unnamed officials. The hierarchy is explained on the methodology page.

22 sources · last updated

Tier legend

  • PrimaryWHO DON, ECDC RRA, national health agency.
  • Peer-reviewedJournal article (BMJ, Lancet, NEJM…).
  • Tier-1 wireReuters, AP, AFP and major broadcasters.
  • RegionalLocal outlets — used cautiously, named officials only.

Source register

DatePublisherTypeTierDocument
ECDCOutbreak surveillance updatePrimaryAndes hantavirus outbreak in cruise ship — update 24 May 2026

ECDC count: 10 confirmed + 2 probable = 12 cases, 3 deaths, CFR 25%. 1 new case (Dutch crew), 0 new deaths since 21 May.

NL TimesNews reportNew hantavirus infection confirmed in Hondius crew member isolated in Netherlands

Local reporting on Dutch crew member 12th case; RIVM + Erasmus MC weekly surveillance details.

WHOPress statementPrimaryStatement on 12th Andes hantavirus case — Netherlands crew member

Tedros announcement (not a DON) confirming 12th case: Dutch crew member tested positive during NL surveillance after Tenerife disembarkation.

DutchNews.nlNews reportTwelfth hantavirus case confirmed in isolated crew member

Coverage of the 12th case announcement and quarantine protocol context.

WHODON updatePrimaryHantavirus disease — Multi-country (update)

Update with revised confirmed/suspected breakdown.

US CDCPress releasePrimaryStatement on the M/V Hondius cruise ship — repatriation flight planned

Used for US monitoring counts; no confirmed US case at time of issue.

Spain Ministerio de SanidadNational health agencyPrimaryCaso de hantavirus en Alicante — comunicado

Confirms the Alicante case linked to a deceased Dutch passenger.

Associated PressNews wireTier-1 wireHondius remains in Cabo Verde waters as case count rises

Geographic / logistical detail on ship status.

TIMEExplainerTier-1 wireWhat we know about the hantavirus outbreak on the Hondius

Used as cross-check; not used for primary case counts.

ABC NewsBroadcast / onlineTier-1 wireHantavirus cruise: passengers monitored across five US states

Used to identify US states with monitored passengers.

NPRRadio / onlineTier-1 wireWhy this hantavirus cluster is unusual — and why it isn't a pandemic

Background context only; not used for case counts.

CNNOnlineTier-1 wireFrom US to Singapore, countries race to track hantavirus

Used to confirm Singapore PCR-negative travellers and South Africa contact addition.

Live ScienceOnlineRegionalHantavirus cruise — Friday, May 8 live updates

Cross-check; used cautiously, not for primary counts.

ReutersNews wireTier-1 wireAuthorities trace hantavirus contacts across more than a dozen countries

Tier-1 wire used to corroborate national-agency reports.

AFPNews wireTier-1 wire40 passengers evacuated from hantavirus-hit cruise ship

Evacuation logistics and onboard medical capacity.

The BMJPeer-reviewed analysisPeer-reviewedAndes virus in confined-space settings — what the MV Hondius cluster tells us

Clinical context, R0 framing, comparison to El Bolsón 1996.

NBC NewsOnlineTier-1 wireSwitzerland confirms hantavirus case from Hondius cruise

First confirmed European case outside the Netherlands.

Washington PostOnlineTier-1 wireAuthorities scramble to limit hantavirus outbreak, trace contacts globally

Used for early contact-traced count (~30).

ECDCRapid Risk AssessmentPrimaryHantavirus on cruise ship — risk for Europe assessed as very low

EU-level risk assessment and contact-tracing guidance.

Argentina Ministry of HealthNational health agencyPrimaryInvestigación sobre exposición previa al embarque del MV Hondius

Used for Argentine fatality and pre-cruise investigation.

RIVM (Netherlands)National health agencyPrimaryHantavirus aan boord van MV Hondius — situatie en advies

Authoritative for Dutch passenger and death counts.

WHODisease Outbreak NewsPrimaryHantavirus cluster linked to cruise ship travel — Multi-country (DON-599)

Authoritative reference for the multi-country cluster. Used for global case totals.

Citation

The source register is part of the open dataset and may be cited under CC-BY-4.0:

HantaCount (2026). Primary source register, 2026 hantavirus outbreak. https://hantacount.com/de/sources — CC-BY-4.0.

See also: methodology · changelog · open dataset.