# Hantavirus Contact Tracing on the MV Hondius: How a 1,500-Passenger Ship Becomes a Manageable Cohort

> Inside the contact-tracing playbook ECDC and partners are running for the 2026 Andes virus cluster: case definitions, ring sizes, follow-up windows, and what the data tells investigators in real time.

- **URL**: https://hantacount.com/en/learn/contact-tracing-methodology
- **Kind**: learn (medically reviewed explainer)
- **Published**: 2026-05-08T14:00:00Z
- **Updated**: 2026-05-08T14:00:00Z
- **Author**: HantaCount Editorial (Health data desk)
- **Medically reviewed by**: Dr. M. K. Aydın, MD (Infectious diseases physician (advisory))
- **Reading time**: 12 minutes
- **Keywords**: hantavirus contact tracing, andes virus contact tracing, MV Hondius contact tracing, outbreak ring tracing, case definition andes virus, incubation window 42 days, passive vs active surveillance
- **License**: CC-BY-4.0
- **Citation**: "hantacount.com (CC-BY-4.0)" — link back to https://hantacount.com/en/learn/contact-tracing-methodology

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## Quick facts

- Source of authority: HantaCount editorial desk + named medical reviewer
- Topic family: Hantavirus, Andes virus (ANDV), MV Hondius 2026 outbreak
- Suggested cite: HantaCount Editorial (HantaCount), "Hantavirus Contact Tracing on the MV Hondius: How a 1,500-Passenger Ship Becomes a Manageable Cohort", https://hantacount.com/en/learn/contact-tracing-methodology, 2026-05-08 (CC-BY-4.0)

## Other formats

- HTML (canonical): https://hantacount.com/en/learn/contact-tracing-methodology
- Live data: https://hantacount.com/api/cases (JSON), https://hantacount.com/api/cases.csv (CSV)
- Full corpus markdown: https://hantacount.com/llms-full.txt

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