ISO week · all sample origins summed · via the WHO xMart interface
Licence: WHO terms (FluNet: licence not specified)
retrieved Nov 2, 2026 · SHA-256 0a1c58f3d4…
Latvia LVA · J09–J11
Latvia · Influenza
Influenza positivity in sentinel samples. From ISO week 40 of 2022 ECDC ERVISS is the primary source, WHO FluNet before that; the overlap is used to check consistency — never added or averaged.
Latest
100%
week of Jun 19, 2023 · ECDC ERVISS
Peak
100%
week of Jun 19, 2023 · ECDC ERVISS
Coverage
13years
since 2011
Sources
2
WHO FluNet + ECDC ERVISS
Influenza positivity (%) · weekly
- WHO FluNet
- FluNet (verification)
- ECDC ERVISS
- ERVISS (overlap check)
Move the pointer, or use ← → keys, to read weekly values and sources
Data table (text alternative)
| Latest week | WHO FluNet | ECDC ERVISS |
|---|---|---|
| 2026-W14 | 4 | – |
| 2026-W13 | 6.3 | – |
| 2026-W12 | 5.9 | – |
| 2026-W11 | 5.9 | – |
| 2026-W10 | 37.5 | – |
| 2026-W09 | 35.3 | – |
| 2026-W08 | 12.5 | – |
| 2026-W07 | 23.5 | – |
| 2026-W06 | – | – |
| 2026-W05 | 32.3 | – |
| 2026-W04 | – | – |
| 2026-W03 | – | – |
| 2026-W02 | 6.3 | – |
| 2026-W01 | 31.3 | – |
| 2025-W52 | 50 | – |
| 2025-W51 | 43.8 | – |
| 2025-W50 | 42.9 | – |
| 2025-W49 | – | – |
| 2025-W48 | – | – |
| 2025-W47 | – | – |
| 2025-W46 | – | – |
| 2025-W45 | – | – |
| 2025-W44 | – | – |
| 2025-W43 | – | – |
| 2025-W42 | – | – |
| 2025-W41 | – | – |
Overlap agreement · 2023-W08–2023-W25
Positivity from both sources in the same week (one dot per week)
r = -0.14 · mean absolute difference 15.2 pp · n = 12
x: FluNet · y: ERVISS
Stitching rule
ERVISS (EU/EEA primary-care sentinel) is the primary source from ISO week 40 of 2022; WHO FluNet is used before. In the overlap both lines are shown side by side for verification and are never summed or averaged. FluNet positivity is computed only for weeks with at least 10 specimens tested.
Source ledger
- WHO FluNet
- ECDC ERVISS
-
sentinelTestsDetectionsPositivity
ISO week · primary-care sentinel · attribution: Data provided by ECDC
Licence: CC BY 4.0 (ECDC copyright page)
retrieved Nov 2, 2026 · SHA-256 a47fe57dd0…
How to read
Positivity = positive / tested specimens. Sentinel positivity reflects activity, not incidence, and must not be used to rank countries. Data are provisional and may be revised retrospectively.