Sources & methodology

Every number, event, and quote on hantavirus.one traces back to a public source. This page lists the sources we draw on, with their licensing terms.

Methodology

We use the case definitions used by the WHO in its Disease Outbreak News reports. A confirmed case requires PCR or serology by a national reference laboratory. A suspected case is a symptomatic individual under monitoring whose laboratory results are pending or unconfirmed. Deaths are attributed to the country in which the death occurred, not the nationality of the deceased.

When sources disagree on a number, we follow the WHO's figure and note the discrepancy in the underlying CSV file. The dataset is rebuilt and republished whenever the underlying numbers change. The build timestamp on each page reflects the most recent rebuild.

Source policy: only top-tier outlets

hantavirus.one cites only two tiers of sources. Tier 1 is official authorities (WHO, ECDC, CDC, PAHO, ProMED, and named national health authorities). Tier 2 is news organisations that meet at least one of: listed in a worldwide top-100 news ranking within the past 12 months, designated public broadcaster of an OECD country, an international wire service (AP, Reuters, AFP), or an established peer-reviewed medical publication.

We do not cite local TV affiliates, tabloids as primary sources, politically aligned outlets with reduced editorial standards, news aggregators (when republishing), cruise-industry sites for health coverage, health-listicle sites, or personal blogs.

When two sources disagree, Tier 1 wins. When Tier 1 is silent, we wait. The 2026 hantavirus outbreak is high-traffic news; every major outlet covers it within hours, so reaching for fringe sources buys hantavirus.one nothing and risks a wrong number.

Source list

• Primary · World Health Organization (WHO) CC BY-NC-SA 3.0 IGO · Disease Outbreak News reports
• Primary · WHO Disease Outbreak News API CC BY-NC-SA 3.0 IGO · REST endpoint
• Primary · European Centre for Disease Prevention and Control (ECDC) CC BY 4.0 · Threat assessments and reports
• Primary · U.S. Centers for Disease Control and Prevention (CDC) Public domain (US gov) · Reference factsheets and US case data
• Primary · Pan American Health Organization (PAHO) CC BY-NC-SA 3.0 IGO · South America surveillance
• Primary · ProMED-mail © ISID · Headline + outbound link only (fair use)
• National · South Africa: National Institute for Communicable Diseases (NICD) Public · Lab confirmation of cases
• National · Netherlands: RIVM Public · Public health authority
• National · Switzerland: Federal Office of Public Health (BAG) Public · National notifications
• National · France: Santé publique France Public · National surveillance
• National · United Kingdom: UK Health Security Agency (UKHSA) Open Government Licence · National updates
• National · Singapore: Ministry of Health Public · National notifications
• National · Argentina: ANLIS Malbrán Public · Endemic ANDV reference lab
• National · Chile: MINSAL Public · Endemic ANDV reference
• Reference · CDC About Hantavirus Public domain · Symptoms and overview
• Reference · CDC About Andes Virus Public domain · ANDV-specific factsheet
• Reference · Wikipedia: MV Hondius hantavirus outbreak CC BY-SA 4.0 · Continuously updated chronicle
• Reference · Wikipedia: Andes virus CC BY-SA 4.0 · Background reference
• Reference · Wikipedia: Hantavirus pulmonary syndrome CC BY-SA 4.0 · Disease background
• Reference · Natural Earth (map data) Public domain · 110m simplified country borders used in the world map
• Media · Reuters Health © Reuters · Headline + outbound link
• Media · BBC Health © BBC · Headline + outbound link
• Media · CNN Health © CNN · Headline + outbound link
• Media · STAT News © STAT · Headline + outbound link
• Media · CIDRAP © University of Minnesota · Expert reporting

Reproducibility

The dataset is public:

• /data/summary.json — top-level aggregates
• /data/countries.json · /data/countries.csv
• /data/timeline.json · /data/timeline.csv
• /data/news.json · /data/news.csv
• /data/sources.json · /data/sources.csv

All data files are released under CC BY 4.0. See /data for usage examples.

Citation

Suggested attribution: Data: hantavirus.one (CC BY 4.0). https://hantavirus.one/

Corrections

Corrections are welcome and prioritized. See /contact for the corrections email address.