Europe disease surveillance
Dengue in Europe, 2025-2026 case data
The 2026 season's first human case in Europe was reported in France (Tarn + l'Hérault (Occitanie)). Figures cover the countries Mosticare tracks (updated 27 July 2026); ECDC publishes the full EU/EEA total.
Last updated · 27 July 2026 · CC BY 4.0
Key facts
The first 2026 autochthonous (locally acquired) dengue in metropolitan France was detected in Occitanie, 2 cases, one in the Tarn and one in l'Hérault. Santé publique France's national reinforced arbovirus bulletin of 23 July 2026 (data to 20 July 2026) recorded them as the first metropolitan-France autochthonous dengue of the year, 0 deaths. Transmission is by the Aedes albopictus tiger mosquito, established across much of southern and central metropolitan France; the same bulletin reported 231 imported dengue cases for 1 May to 19 July 2026, the travel-associated reservoir that can seed local transmission. Dengue mosquitoes bite mainly by day, so personal protection and physical barriers are the primary individual defence.
Source: Santé publique France · national reinforced arbovirus bulletin (chikungunya-dengue-Zika et-17, 23 July 2026, data to 20 July 2026) · verified 27 July 2026
Dengue in Europe over time (2010-2025)
Reported locally-acquired (autochthonous) dengue in the EU/EEA has risen sharply over the past decade rather than holding flat. EU/EEA Member States reported 71 (2022), 130 (2023) and 304 (2024) autochthonous human cases, 2024 the record, more than every earlier year in the 2010-2024 series combined (275). The most recent season (2025: 33) was smaller, these counts are import- and weather-driven and swing between years, but the multi-year direction has been upward. Figures are reported locally-acquired (autochthonous) human dengue cases in EU/EEA Member States (mainland; EU outermost regions such as Madeira are excluded, as ECDC reports them separately) per ECDC's historical local-transmission data. They exclude the far larger travel-imported caseload. Year-to-year comparisons are affected by changes in surveillance intensity, case definitions, the establishment of the Aedes albopictus mosquito and the set of reporting countries; autochthonous dengue is strongly driven by summer weather and imported seeding, so it varies sharply between seasons. The 2025 figure is a provisional end-of-season count from ECDC's weekly Communicable Disease Threats Report, not a finalised Annual Epidemiological Report, and may be revised. ECDC is the primary surveillance authority.
The data
| Country / region | Disease | Cases | Deaths | Period | Source | Updated |
|---|---|---|---|---|---|---|
| France · Tarn + l'Hérault (Occitanie) | Dengue | 2 | 0 | 2026 enhanced-surveillance period (1 May, 30 November) | Santé publique France · national reinforced arbovirus bulletin (chikungunya-dengue-Zika et-17, 23 July 2026) | 27 July 2026 |
| Portugal · Madeira | Dengue (DENV-2) | 0 | 0 | 2026 transmission season (year-to-date) | IASaúde · Instituto de Administração da Saúde da Madeira | 22 May 2026 |
| Portugal · Madeira | Dengue (DENV-2) | 0 | 0 | 2025 transmission season | IASaúde · Instituto de Administração da Saúde da Madeira | 25 May 2026 |
About Dengue
Dengue is transmitted by Aedes mosquitoes, Aedes aegypti and Aedes albopictus. In the Mosticare feed, dengue surveillance covers the Madeira archipelago (Portugal), where DENV-2 has been detected in Aedes aegypti vector populations, and metropolitan France, where Santé publique France reported the first 2026 autochthonous dengue cases (Occitanie) transmitted by Aedes albopictus. This page reflects only the territories Mosticare tracks; for the complete EU/EEA count of imported and autochthonous dengue cases, ECDC is the primary source.
Frequently asked questions
Where was the first locally acquired dengue case in metropolitan France in 2026?
The first 2026 autochthonous (locally acquired) dengue in metropolitan France was detected in Occitanie, 2 cases, one in the Tarn and one in l'Hérault. Santé publique France's national reinforced arbovirus bulletin of 23 July 2026 (data to 20 July 2026) recorded them as the first metropolitan-France autochthonous dengue of the year, 0 deaths. Transmission is by the Aedes albopictus tiger mosquito, established across much of southern and central metropolitan France; the same bulletin reported 231 imported dengue cases for 1 May to 19 July 2026, the travel-associated reservoir that can seed local transmission. Dengue mosquitoes bite mainly by day, so personal protection and physical barriers are the primary individual defence.
How many Dengue cases have been reported in Europe in 2026?
So far in the 2026 season the tracked countries report: France 2. The feed is refreshed weekly during transmission season; ECDC publishes the full EU/EEA running total.
Which mosquito transmits Dengue in Europe?
Dengue is transmitted in Europe by Aedes aegypti (Yellow fever mosquito). Reemerging in Europe since 2012 via port cities. Highly anthropophilic, indoor-resting, the principal vector globally.
Where is the dengue mosquito established in Europe?
Aedes aegypti, the principal global dengue vector, is established on the Madeira archipelago (Portugal) and reported at scattered Mediterranean port locations. Aedes albopictus, a secondary dengue vector, is far more widely established across mainland southern and central Europe.
Is dengue increasing in Europe?
Reported locally-acquired (autochthonous) dengue in the EU/EEA has risen sharply over the past decade rather than holding flat. EU/EEA Member States reported 71 (2022), 130 (2023) and 304 (2024) autochthonous human cases, 2024 the record, more than every earlier year in the 2010-2024 series combined (275). The most recent season (2025: 33) was smaller, these counts are import- and weather-driven and swing between years, but the multi-year direction has been upward. Figures are reported locally-acquired (autochthonous) human dengue cases in EU/EEA Member States (mainland; EU outermost regions such as Madeira are excluded, as ECDC reports them separately) per ECDC's historical local-transmission data. They exclude the far larger travel-imported caseload. Year-to-year comparisons are affected by changes in surveillance intensity, case definitions, the establishment of the Aedes albopictus mosquito and the set of reporting countries; autochthonous dengue is strongly driven by summer weather and imported seeding, so it varies sharply between seasons. The 2025 figure is a provisional end-of-season count from ECDC's weekly Communicable Disease Threats Report, not a finalised Annual Epidemiological Report, and may be revised. ECDC is the primary surveillance authority.
How many locally-acquired dengue cases were reported in the EU each year from 2010 to 2025?
Autochthonous human dengue cases in mainland EU/EEA Member States by year, 2010: 12, 2013: 1, 2014: 4, 2015: 8, 2018: 14, 2019: 10, 2020: 23, 2021: 2, 2022: 71, 2023: 130, 2024: 304, 2025: 33. The record was 2024 (304); years with no mainland autochthonous transmission are omitted. Source: ECDC; figures exclude travel-imported cases and EU outermost regions such as Madeira, and the most recent year is provisional.
What was the worst year for autochthonous dengue in Europe?
2024, with 304 locally-acquired dengue cases across mainland EU/EEA Member States, a record ECDC described as an increasing trend versus earlier years. Source: ECDC.
Sources
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About this data
Mosticare aggregates and re-publishes vector-borne disease surveillance from ECDC, EFSA, and national ministries of health. Mosticare is an aggregator, not a primary surveillance authority, every figure on this page cites the originating source and is independently verifiable. This is a partial aggregation; for the complete EU/EEA totals, ECDC is the primary source.
The data behind this page is published as free, machine-readable feeds under CC BY 4.0, the point-in-time incidence snapshot at /threat-map/feed.json (JSON Schema) and the multi-year trends at /threat-map/feed/trends.json (JSON Schema). See the live Europe threat map and the full data room.