OpenDengue — national dengue case counts (V1.3)

OpenDengue (Clarke et al. 2024, https://doi.org/10.1038/s41597-024-03120-7) is a standardized archive of dengue case reports from public national surveillance systems. This dataset is the V1.3 national extract; subnational extracts (Spatial_extract, Temporal_extract) are larger and could be ingested as sibling datasets later (opendengue-admin1, opendengue-admin2).

Coverage spans 1993-present (with a small 1924-1925 fragment), but per-country availability varies widely — Brazil has weekly data 2014+, others only monthly. Annual and Total aggregates from the source are filtered out so the dataset is series-shaped; sum kept rows in the dashboard when an annual roll-up is needed. Use the case_status / case_definition and temporal_resolution row-level columns to construct a coherent series.

Source: https://opendengue.org/

Coverage

• Time: 1924-01-26 → 1925-01-17; 1993-01-31 → 2025-04-30
• Cadence: irregular (observed median spacing: 7 days)
• Geography levels: national — 127 unique location IDs
• Countries: multiple
• Pathogens: dengue
• Surveillance category: arboviral
• Rows: 26,378

Reporting gaps within coverage

• 1924-01-26 → 1924-03-01 (5 weeks)
• 1924-03-01 → 1924-04-12 (6 weeks)
• 1924-04-12 → 1924-07-19 (14 weeks)
• 1924-07-19 → 1924-08-16 (4 weeks)
• 1924-09-06 → 1924-09-27 (3 weeks)
• 1924-09-27 → 1925-01-10 (15 weeks)
• 1993-01-31 → 1993-02-28 (4 weeks)
• 1993-02-28 → 1993-03-31 (4 weeks)
• 1993-03-31 → 1993-04-30 (4 weeks)
• 1993-04-30 → 1993-05-31 (4 weeks)
• 1993-05-31 → 1993-06-30 (4 weeks)
• 1993-06-30 → 1993-07-31 (4 weeks)
• 1993-07-31 → 1993-08-31 (4 weeks)
• 1993-08-31 → 1993-09-30 (4 weeks)
• 1993-09-30 → 1993-10-31 (4 weeks)
• 1993-10-31 → 1993-11-30 (4 weeks)
• 1993-11-30 → 1993-12-31 (4 weeks)
• 1993-12-31 → 1994-01-31 (4 weeks)
• 1994-01-31 → 1994-02-28 (4 weeks)
• 1994-02-28 → 1994-03-31 (4 weeks)
• 1994-03-31 → 1994-04-30 (4 weeks)
• 1994-04-30 → 1994-05-31 (4 weeks)
• 1994-05-31 → 1994-06-30 (4 weeks)
• 1994-06-30 → 1994-07-31 (4 weeks)
• 1994-07-31 → 1994-08-31 (4 weeks)
• 1994-08-31 → 1994-09-30 (4 weeks)
• 1994-09-30 → 1994-10-31 (4 weeks)
• 1994-10-31 → 1994-11-30 (4 weeks)
• 1994-11-30 → 1994-12-31 (4 weeks)
• 1994-12-31 → 1995-01-31 (4 weeks)
• 1995-01-31 → 1995-02-28 (4 weeks)
• 1995-02-28 → 1995-03-31 (4 weeks)
• 1995-03-31 → 1995-04-30 (4 weeks)
• 1995-04-30 → 1995-05-31 (4 weeks)
• 1995-05-31 → 1995-06-30 (4 weeks)
• 1995-06-30 → 1995-07-31 (4 weeks)
• 1995-07-31 → 1995-08-31 (4 weeks)
• 1995-08-31 → 1995-09-30 (4 weeks)
• 1995-09-30 → 1995-10-31 (4 weeks)
• 1995-10-31 → 1995-11-30 (4 weeks)
• 1995-11-30 → 1995-12-31 (4 weeks)
• 1995-12-31 → 1996-01-31 (4 weeks)
• 1996-01-31 → 1996-02-29 (4 weeks)
• 1996-02-29 → 1996-03-31 (4 weeks)
• 1996-03-31 → 1996-04-30 (4 weeks)
• 1996-04-30 → 1996-05-31 (4 weeks)
• 1996-05-31 → 1996-06-30 (4 weeks)
• 1996-06-30 → 1996-07-31 (4 weeks)
• 1996-07-31 → 1996-08-31 (4 weeks)
• 1996-08-31 → 1996-09-30 (4 weeks)
• 1996-09-30 → 1996-10-31 (4 weeks)
• 1996-10-31 → 1996-11-30 (4 weeks)
• 1996-11-30 → 1996-12-31 (4 weeks)
• 1996-12-31 → 1997-01-31 (4 weeks)
• 1997-01-31 → 1997-02-28 (4 weeks)
• 1997-02-28 → 1997-03-31 (4 weeks)
• 1997-03-31 → 1997-04-30 (4 weeks)
• 1997-04-30 → 1997-05-31 (4 weeks)
• 1997-05-31 → 1997-06-30 (4 weeks)
• 1997-06-30 → 1997-07-31 (4 weeks)
• 1997-07-31 → 1997-08-31 (4 weeks)
• 1997-08-31 → 1997-09-30 (4 weeks)
• 1997-09-30 → 1997-10-31 (4 weeks)
• 1997-10-31 → 1997-11-30 (4 weeks)
• 1997-11-30 → 1997-12-31 (4 weeks)
• 1997-12-31 → 1998-01-17 (2 weeks)
• 1998-01-31 → 1998-02-21 (3 weeks)
• 1999-01-02 → 1999-01-31 (4 weeks)
• 1999-01-31 → 1999-02-28 (4 weeks)
• 1999-02-28 → 1999-03-31 (4 weeks)
• 1999-03-31 → 1999-04-30 (4 weeks)
• 1999-04-30 → 1999-05-31 (4 weeks)
• 1999-05-31 → 1999-06-30 (4 weeks)
• 1999-06-30 → 1999-07-31 (4 weeks)
• 1999-07-31 → 1999-08-31 (4 weeks)
• 1999-08-31 → 1999-09-30 (4 weeks)
• 1999-09-30 → 1999-10-31 (4 weeks)
• 1999-10-31 → 1999-11-30 (4 weeks)
• 1999-11-30 → 1999-12-31 (4 weeks)
• 2024-12-31 → 2025-01-31 (4 weeks)
• 2025-01-31 → 2025-02-28 (4 weeks)
• 2025-02-28 → 2025-03-31 (4 weeks)
• 2025-03-31 → 2025-04-30 (4 weeks)

Columns

Column	Unit	value_type	Aggregation	Description
dengue_total	cases	incident	sum	Reported dengue cases in the period. May include suspected, probable, and laboratory-confirmed cases — see case_status (schema-standard) and case_definition (source-original) for the certainty tier of each row. Includes all severity levels (dengue, dengue with/without warning signs, severe dengue, dengue haemorrhagic fever, dengue shock syndrome, dengue deaths) where reported.

Additional data columns

• case_definition — Source-original case definition: Suspected, Probable, Confirmed, Probable and confirmed, Suspected and confirmed, Total. Preserved alongside the schema-standard case_status so original fidelity isn't lost. The same (country, date) cell can have multiple rows when the source distinguishes definitions — filter to one for a single time series.
• temporal_resolution — Per-row temporal granularity (Week or Month). Coarser source aggregates (Year, Total) are filtered out at ingest — the dashboard can sum kept rows on the fly when an annual roll-up is needed.
• location_name — Source's English country name (uppercase). location_id (ISO 3166-1 alpha-2) is canonical.

Interpretation caveats

Things that may differ from how other sources define a similar measure. If you're combining this dataset with another, read these first.

• case_status — Mapping from the source's case_definition: Probable and confirmed → probable (looser tier of the union, the minimum certainty represented); Suspected and confirmed → suspect; Total → not-classified. The original definition is preserved in case_definition for full fidelity.
• dengue_total — Cross-country comparability is limited — case definitions, reporting completeness, and surveillance intensity vary substantially. OpenDengue normalizes structure but does not normalize underlying definitions. For modeling, prefer one country at a time or one case_status consistently.
• case_definition — Probable and confirmed and Suspected and confirmed are summed categories from sources that combine tiers — they are not standalone classifications. Don't sum them with Confirmed/Probable/Suspected rows from the same country and date.
• temporal_resolution — A country may switch between Week and Month over its history. Pick one resolution per country when constructing a continuous series; don't naively concatenate rows of different temporal_resolution.

Access

• Availability: open
• Access type: github
• License: cc-by-4.0
• Tier: 1

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Schema version 0.1 · Last ingested 2026-04-26T02:53:03Z · source_id: opendengue · Manifest section §6.1