1. Source and extraction

Adapters read public material from CDC, ECDC, WHO Disease Outbreak News, and reviewed editorial entries. Each record keeps source, source URL, fetch date, publication date, confidence, and data type.

2. Normalization

Sources differ in periods, geography, and table shape. The pipeline normalizes them into case aggregate, outbreak event, news item, and region contracts. The public map uses only fields that pass contract validation.

3. Geography and precision

Geocoding should not imply more precision than a source provides. A country-level record is not rendered as a precise point. The precision field states country, admin1, admin2, event, point, or unknown.

FAQ

Is this medical advice?

No. The project shows published surveillance data and source links.

Why can a record be absent from the map layer?

If the source does not provide enough geography, the record remains in data but is not drawn as a point.