# Sources

This document lists every official source HantaTracker draws from. The machine-readable equivalent is `data/sources.json`.

## Tier 1 — In active use on the site

Every numeric value displayed on HantaTracker — every KPI, every country row, every feed item — links to one of the sources below. The build will fail if a value cites anything else (`scripts/verify.mjs` enforces the host allowlist). When two Tier-1 sources disagree we publish the most recent and link both; when a newer Tier-1 source revises an earlier one (as the WHO 7 May 2026 news item did for the cruise-ship cluster) we update the value and log the change.

### World Health Organization

- [Disease Outbreak News (DONs)](https://www.who.int/emergencies/disease-outbreak-news) — global outbreak alerts and risk assessments.
- [Hantavirus Fact Sheet](https://www.who.int/news-room/fact-sheets/detail/hantavirus) — baseline medical facts: transmission, incubation, vaccine status, case fatality.
- [WHO DON 2026-DON599: Hantavirus cluster linked to cruise ship travel, Multi-country](https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON599) — May 2026 cruise-ship cluster.
- [WHO's response to hantavirus cases linked to a cruise ship (7 May 2026)](https://www.who.int/news/item/07-05-2026-who-s-response-to-hantavirus-cases-linked-to-a-cruise-ship) — revised cluster figures (8 cases, 5 confirmed, 3 deaths) and IHR response detail.

### U.S. Centers for Disease Control and Prevention

- [Hantavirus Reported Cases](https://www.cdc.gov/hantavirus/data-research/cases/index.html) — cumulative U.S. case counts.
- [National Notifiable Diseases Surveillance System (NNDSS)](https://www.cdc.gov/nndss/infectious-disease/index.html) — weekly U.S. notifiable disease tables.
- [CDC WONDER NNDSS](https://wonder.cdc.gov/nndss.html) — structured queries against NNDSS.

### European Centre for Disease Prevention and Control

- [Hantavirus Surveillance and Disease Data](https://www.ecdc.europa.eu/en/hantavirus-infection/surveillance-and-disease-data) — EU/EEA surveillance landing page.
- [ECDC Annual Epidemiological Report 2023 — Hantavirus Infection](https://www.ecdc.europa.eu/en/publications-data/hantavirus-infection-annual-epidemiological-report-2023) — most recent annual report.
- [ECDC Surveillance Atlas of Infectious Diseases](https://atlas.ecdc.europa.eu/public/) — downloadable EU/EEA data.

### Pan American Health Organization

- [Epidemiological Alerts and Updates](https://www.paho.org/en/epidemiological-alerts-and-updates) — Americas regional alerts.
- [PAHO Epidemiological Alert: Hantavirus Pulmonary Syndrome in the Americas Region (19 December 2025)](https://www.paho.org/sites/default/files/2025-12/2025-12-19-epidemiological-alert-hantavirus-engfinal_0.pdf) — current per-country baseline for the Americas.

## Tier 2 — Catalogued, not currently displayed

**No value on the site is sourced from Tier 2.** The list below is a catalogue of national health ministries, regional surveillance bodies, and adjunct CDC data products that we *intend* to integrate as the update mechanism matures. They are useful for filling country-level gaps that Tier-1 does not carry (e.g. the bulk of European Puumala cases, China's HFRS counts, weekly bulletins from MINSAL Chile or MINSA Panama), and for tracking faster-cadence reports ahead of slower Tier-1 annual aggregates.

A Tier-2 figure becomes eligible for display only after it can be cross-checked against a Tier-1 source covering the same reporting period. Country rows in `cases_by_country.json` must in addition carry a Tier-1 figure whose reporting period extends into Q3 2025 (≥ 1 July 2025) or later — see `METHODOLOGY.md`.

Per-source fetch and update mechanics — URL patterns, query templates, parser notes — are documented in the internal `INGESTION.md` playbook (not rendered on the site).

### CDC and other US references

- [CDC Open Data Catalog](https://data.cdc.gov/)
- [CDC Open Technology APIs](https://open.cdc.gov/apis.html)
- [CDC WONDER API](https://wonder.cdc.gov/wonder/help/wonder-api.html)
- [CDC Stacks](https://stacks.cdc.gov/)

### Asia

- [China CDC Weekly — Hantavirus surveillance](https://weekly.chinacdc.cn/en/article/doi/10.46234/ccdcw2025.141)
- [China — Monthly statutory infectious disease report (NHC)](https://www.nhc.gov.cn/wjw/yqbb/list.shtml)
- [South Korea — KDCA Notifiable Infectious Disease Surveillance](https://npt.kdca.go.kr/)
- [Taiwan — NIDSS Hantavirus Syndrome](https://nidss.cdc.gov.tw/en/nndss/disease?id=HANTA)
- [Hong Kong — Hantavirus infection (Centre for Health Protection)](https://www.chp.gov.hk/en/healthtopics/content/24/3057.html)
- [Japan — IASR / NESID notifiable disease surveillance (NIID)](https://www.niid.go.jp/niid/en/iasr-e.html)

### Americas (national)

- [Argentina — Boletín Epidemiológico Nacional](https://www.argentina.gob.ar/salud/epidemiologia/boletines)
- [Chile — Boletín Epidemiológico de Hantavirus (MINSAL)](https://epi.minsal.cl/hantavirus-materiales-relacionados/)
- [Brazil — Hantavirose (Ministério da Saúde / SVS)](https://www.gov.br/saude/pt-br/assuntos/saude-de-a-a-z/h/hantavirose)
- [Panama — Boletín Epidemiológico Semanal (MINSA)](https://www.minsa.gob.pa/informacion-salud/boletin-epidemiologico-semanal)
- [Paraguay — Dirección General de Vigilancia de la Salud (MSPBS)](https://www.mspbs.gov.py/dgvs/)
- [Uruguay — Ministerio de Salud Pública](https://www.gub.uy/ministerio-salud-publica/)
- [Canada — Hantavirus (Public Health Agency of Canada)](https://www.canada.ca/en/public-health/services/diseases/hantavirus.html)

### Europe (national)

- [Finland — Tartuntatautirekisteri / Sampo (THL)](https://sampo.thl.fi/pivot/prod/en/ttr/shp/fact_shp)
- [Sweden — Sorkfeber statistics (Folkhälsomyndigheten)](https://www.folkhalsomyndigheten.se/folkhalsorapportering-statistik/statistik-a-o/sjukdomsstatistik/sorkfeber/)
- [Germany — SurvStat@RKI 2.0](https://survstat.rki.de/)
- [France — Odissé open data (Santé publique France)](https://odisse.santepubliquefrance.fr/)
- [Norway — MSIS Statistics Bank (FHI)](https://statistikk.fhi.no/msis)
- [Belgium — Hantavirus infection numbers (Sciensano)](https://www.sciensano.be/en/health-topics/hantavirus-infection/numbers)
- [Netherlands — Hantavirusinfectie (RIVM)](https://www.rivm.nl/hantavirusinfectie)
- [Austria — Hantavirus annual case table (AGES)](https://www.ages.at/mensch/krankheit/krankheitserreger-von-a-bis-z/hantavirus)
- [Czechia — Hantaviry (SZÚ)](https://szu.gov.cz/tema/prevence/hantaviry)
- [Slovakia — EPIS infectious disease portal (ÚVZ SR)](https://www.epis.sk/InformacnaCast.aspx)
- [Slovenia — Tedensko spremljanje HMRS (NIJZ)](https://nijz.si/communicable-diseases/tedensko-spremljanje-hemoragicne-mrzlice-z-renalnim-sindromom-hmrs/)
- [Estonia — Communicable disease bulletins (Terviseamet)](https://www.terviseamet.ee/en/communicable-diseases/statistics/communicable-disease-bulletins)
- [Hungary — Weekly epidemiological report (NNGYK)](https://www.nnk.gov.hu/)
- [Romania — Hantavirus communiqué (INSP / CNSCBT)](https://insp.gov.ro/)
- [Serbia — Hantavirus communications (Institut Batut)](https://www.batut.org.rs/)
- [United Kingdom — UKHSA notifiable diseases](https://www.gov.uk/guidance/notifiable-diseases-and-how-to-report-them)
- [Russia — HFRS surveillance (Rospotrebnadzor)](https://www.rospotrebnadzor.ru/)

### Africa

- [Africa CDC — Epidemic Intelligence Weekly Report](https://africacdc.org/disease-events/)
- [South Africa — Hantavirus Pulmonary Syndrome (NICD)](https://www.nicd.ac.za/diseases-a-z-index/hantavirus-pulmonary-syndrome/)