Datasets:

EPI-Eval
/

ecdc-erviss

+---
+pretty_name: ECDC ERVISS — ILI/ARI primary-care consultation rates
+license: other
+size_categories:
+- 10K<n<100K
+tags:
+- cadence-weekly
+- geo-eu
+- surveillance-respiratory
+- pathogen-influenza
+- tier-1
+- availability-open
+schema_version: '0.1'
+source_id: ecdc-erviss
+source_url: https://github.com/EU-ECDC/Respiratory_viruses_weekly_data
+manifest_section: §5.3
+surveillance_category: respiratory
+pathogens:
+- influenza
+- sars-cov-2
+- rsv
+availability: open
+availability_notes: null
+access_type: github
+tier: 1
+cadence: weekly
+geography_levels:
+- national
+geography_countries:
+- AT
+- BE
+- BG
+- CY
+- CZ
+- DE
+- DK
+- EE
+- ES
+- FI
+- FR
+- GR
+- HR
+- HU
+- IE
+- IS
+- IT
+- LI
+- LT
+- LU
+- LV
+- MT
+- NL
+- 'NO'
+- PL
+- PT
+- RO
+- SE
+- SI
+- SK
+gold_standard_for: []
+vintaged_version_of: null
+succeeds: null
+derived_from: []
+value_columns:
+- name: ili_rate
+  unit: consultations per 100,000 population
+  value_type: rate
+  description: Influenza-like illness primary-care consultation rate per 100,000 population per ECDC ERVISS methodology.
+  aggregation: rate
+- name: ari_rate
+  unit: consultations per 100,000 population
+  value_type: rate
+  description: Acute respiratory infection primary-care consultation rate per 100,000 population. Broader case definition
+    than ILI.
+  aggregation: rate
+notes:
+  extra_columns:
+  - column: age
+    description: Reporting age band (`0-4`, `5-14`, `15-64`, `65+`, `total`). Filter to `total` for population-wide series.
+  - column: location_name
+    description: Source's English country name. `location_id` (ISO 3166-1 alpha-2) is canonical.
+  interpretation_caveats:
+  - column: ili_rate
+    caveat: ILI is a *symptomatic* signal — patients meeting the ECDC ILI case definition (sudden fever ≥38°C plus cough/sore
+      throat) regardless of lab confirmation. Captures non-flu respiratory illness too. Pair with ERVISS sentinel virological
+      positivity for lab-confirmed flu.
+  - column: ari_rate
+    caveat: ARI is broader than ILI — any acute respiratory infection without requiring fever. Counts will exceed `ili_rate`
+      and include more non-influenza causes.
+  - column: location_id
+    caveat: Greece is `GR` (ISO 3166-1 alpha-2). ECDC's internal `EL` code is not used in this dataset.
+  general: 'ECDC''s ERVISS aggregates respiratory virus surveillance from 30+ EU/EEA countries.
+    This dataset is the **primary-care syndromic** slice (ILI and ARI consultation rates);
+    additional ERVISS slices (sentinel virological positivity, SARI severity, variants)
+    can be added as sibling datasets later.
+    Data is published weekly to the public GitHub repo at
+    `EU-ECDC/Respiratory_viruses_weekly_data`. Each weekly commit is a snapshot —
+    vintaged history is available via git but is not surfaced as `as_of` in this
+    dataset.
+    '
+extra:
+  github_repo: https://github.com/EU-ECDC/Respiratory_viruses_weekly_data
+  source_csv: data/ILIARIRates.csv
+  erviss_dashboard: https://erviss.org/
+computed:
+  last_ingested: '2026-04-26T01:58:56Z'
+  row_count: 26751
+  time_coverage:
+  - start: '2021-06-27'
+    end: '2026-04-19'
+  geography_unit_count: 28
+  observed_cadence_days: 7
+  missing_gaps: []
+  data_hash: 1df84f26f0055222
+---
+# ECDC ERVISS — ILI/ARI primary-care consultation rates
+ECDC's ERVISS aggregates respiratory virus surveillance from 30+ EU/EEA countries.
+This dataset is the **primary-care syndromic** slice (ILI and ARI consultation rates);
+additional ERVISS slices (sentinel virological positivity, SARI severity, variants)
+can be added as sibling datasets later.
+Data is published weekly to the public GitHub repo at
+`EU-ECDC/Respiratory_viruses_weekly_data`. Each weekly commit is a snapshot —
+vintaged history is available via git but is not surfaced as `as_of` in this
+dataset.
+**Source:** <https://github.com/EU-ECDC/Respiratory_viruses_weekly_data>
+## Coverage
+- **Time:** 2021-06-27 → 2026-04-19
+- **Cadence:** `weekly` (observed median spacing: 7 days)
+- **Geography levels:** `national` — 28 unique location IDs
+- **Countries:** AT, BE, BG, CY, CZ, DE, DK, EE, ES, FI, FR, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MT, NL, NO, PL, PT, RO, SE, SI, SK
+- **Pathogens:** `influenza`, `sars-cov-2`, `rsv`
+- **Surveillance category:** `respiratory`
+- **Rows:** 26,751
+## Columns
+| Column | Unit | value_type | Aggregation | Description |
+|--------|------|------------|-------------|-------------|
+| `ili_rate` | consultations per 100,000 population | `rate` | `rate` | Influenza-like illness primary-care consultation rate per 100,000 population per ECDC ERVISS methodology. |
+| `ari_rate` | consultations per 100,000 population | `rate` | `rate` | Acute respiratory infection primary-care consultation rate per 100,000 population. Broader case definition than ILI. |
+### Additional data columns
+- **`age`** — Reporting age band (`0-4`, `5-14`, `15-64`, `65+`, `total`). Filter to `total` for population-wide series.
+- **`location_name`** — Source's English country name. `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.
+- **`ili_rate`** — ILI is a *symptomatic* signal — patients meeting the ECDC ILI case definition (sudden fever ≥38°C plus cough/sore throat) regardless of lab confirmation. Captures non-flu respiratory illness too. Pair with ERVISS sentinel virological positivity for lab-confirmed flu.
+- **`ari_rate`** — ARI is broader than ILI — any acute respiratory infection without requiring fever. Counts will exceed `ili_rate` and include more non-influenza causes.
+- **`location_id`** — Greece is `GR` (ISO 3166-1 alpha-2). ECDC's internal `EL` code is not used in this dataset.
+## Access
+- **Availability:** `open`
+- **Access type:** `github`
+- **License:** other
+- **Tier:** 1
+---
+*Schema version `0.1` · Last ingested 2026-04-26T01:58:56Z · `source_id: ecdc-erviss` · Manifest section §5.3*