Methodology — Where do
the figures come from?

Confirmed cases and deaths are totals since the start of the outbreak. Only new cases and deaths — the “24h” columns, or “(+…)” on the map — are daily figures, announced by the latest bulletin. The fatality rate covers confirmed cases only, and the outcome of the most recent cases is not yet known: it describes the severity observed so far, not an individual's risk of dying from the disease, and it will keep moving. New cases (24h) is taken as published in the latest bulletin — so it does not always match the gap between two successive cumulative totals, since retroactive revisions land in the totals but not in that figure.

Two known limitations. National figures are sometimes published before the province and health-zone breakdown, so a temporary gap between levels is normal. And the authorities sometimes revise figures retroactively — those revisions are reflected here as they come, unsmoothed.

The figures shown come from the bulletins of the DRC's National Institute of Public Health (INSP), occasionally supplemented by World Health Organization (WHO) reports. Both sources are archived and available on the Sources & bulletins page.

This site is powered by a tool that's actively developed and supervised: it fetches each newly published SitRep and extracts the key figures (confirmed cases, deaths, recoveries, breakdown by province and health zone), generally once a day. Every report is then read in full — the tables as well as the prose — and the extractions are checked by hand, bulletin by bulletin, with manual correction when needed (a bulletin's layout changing, fixing a numbering error, etc.). The WHO weekly reports are read the same way and are used to complete the series the INSP SitRep does not cover. Data may be revised retroactively by health authorities (harmonisation between provinces, reclassification of community deaths): such revisions are reflected on the site automatically as soon as they're published.

Official reports mix data at different levels of detail (national, provincial, health zone), sometimes in different formats, which can occasionally produce minor inconsistencies or approximations. National figures are also sometimes published before the province and health zone breakdown, causing a temporary lag between these levels.

As soon as a new bulletin is published, it is checked and the site is updated. Checking the data takes less than 24 hours. The date of the latest bulletin included is shown at the top of every page.

All the data shown on this site comes from the official bulletins archived in the Sources and bulletins section, where each one can be read as its original PDF.

This site is strictly informational. It compiles and formats public data already published by official sources, without independent analysis or interpretation. It is not medical, epidemiological, or geopolitical advice of any kind, and should not be used as the basis for a health, travel, or safety decision. For any medical question, consult a health professional or the relevant health authorities (WHO, DRC Ministry of Health). Despite our best efforts, errors, approximations, or update delays are possible.