Europe and Australia disease surveillance

Dengue in Europe and Australia, 2025-2026 case data

The 2026 season's first human case in Europe was reported in France (Tarn + l'Hérault (Occitanie) + Dordogne (Nouvelle-Aquitaine) + Bouches-du-Rhône (Provence-Alpes-Côte d'Azur)). Figures cover the countries Mosticare tracks (updated 30 October 2026); ECDC publishes the full EU/EEA total. In Australia, South Australia recorded 9 dengue notifications in the 8 weeks from 30 August to 24 October 2026, locally and overseas acquired cases combined.

Last updated · 30 October 2026 · CC BY 4.0

Key facts

first6 cases (Tarn + l'Hérault + Dordogne + Bouches-du-Rhône)

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. By its et-25 bulletin (30 September 2026, data to 28 September 2026) metropolitan France stands at 6 autochthonous dengue cases across four transmission episodes, in the Tarn and l'Hérault (Occitanie), the Dordogne (Nouvelle-Aquitaine) and the Bouches-du-Rhône (Provence-Alpes-Côte d'Azur); 424 imported dengue cases were recorded for 1 May to 27 September 2026, the travel-associated reservoir that can seed local transmission. Transmission is by the Aedes albopictus tiger mosquito, established across much of southern and central metropolitan France. 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-25, 30 September 2026, data to 28 September 2026) · verified 9 October 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.

Reported locally-acquired (autochthonous) human dengue cases in mainland EU/EEA Member States by year, per ECDC. Years with no mainland autochthonous transmission are omitted. † 2025 is a provisional Mosticare subtotal of ECDC's per-country figures (France 29 + Italy 4) from ECDC's weekly report, pending the final annual figure. “, ” = deaths not separately reported by ECDC (not zero). EU outermost regions such as Madeira are excluded. ECDC is the primary source for the complete European total.
YearEU/EEA casesDeathsSource
201012,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
20131,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
20144,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
20158,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
201814,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
201910,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
202023,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
20212,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025)
202271,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025); corroborated by ECDC news, 'increasing trend' release (Jun 2024)
2023130,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025); corroborated by ECDC news, 'increasing trend' release (Jun 2024)
2024304,ECDC · Historical data on local transmission of dengue in the EU/EEA (updated 9 March 2025); corroborated by ECDC news, 'increasing trend' release
202533 †,ECDC · Communicable Disease Threats Report, week 51 2025 (provisional, data to 19 November 2025)

The data

Dengue incidence records in the Mosticare feed (countries tracked: Portugal, France, Italy). National totals per each country's health authority; the complete EU/EEA total is published by ECDC.
Country / regionDiseaseCasesDeathsPeriodSourceUpdated
Italy · Toscana (Livorno, Firenze), Puglia (Lecce), Lombardia (Milano), Veneto (Vicenza), Campania (Napoli), Lazio (Roma)Dengue7602026 transmission season (year-to-date)Istituto Superiore di Sanità arbovirosi bulletin (27 October 2026)30 October 2026
France · Tarn + l'Hérault (Occitanie) + Dordogne (Nouvelle-Aquitaine) + Bouches-du-Rhône (Provence-Alpes-Côte d'Azur)Dengue8,2026 enhanced-surveillance period (1 May, 30 November)Santé publique France chikungunya/dengue bulletin (published 28 October 2026, data to 26 October 2026)30 October 2026
Portugal · MadeiraDengue (DENV-2)002026 transmission season (year-to-date)IASaúde · Instituto de Administração da Saúde da Madeira22 May 2026
Portugal · MadeiraDengue (DENV-2)002025 transmission seasonIASaúde · Instituto de Administração da Saúde da Madeira25 May 2026

Dengue in Australia

South Australia notifications

Weekly Report - Last 8 Weeks, reporting period 2026-08-30 to 2026-10-24, SA Health, Communicable Disease Control Branch. Weekly counts of notifications to the South Australian Notifiable Condition System, by week ending. SA Health extracts them weekly and states they are subject to change, so the newest report replaces earlier figures for the same week. The report does not say whether a case was acquired locally or overseas and does not name a vector. South Australia only. Source: SA Health, CC BY 4.0.
Week endingNotifications
5 September 20260
12 September 20260
19 September 20261
26 September 20262
3 October 20261
10 October 20261
17 October 20262
24 October 20262
8 weeks9

Vector species records

Presence-only and effort-biased: points show where mosquitoes were recorded, not where they are absent or how abundant they are. Species-level records only. 8,521 CC BY-NC records were excluded at retrieval, so a missing species is 'no openly licensed record', not confirmed absence. A specimen published by two datasets counts once: a compilation, sequence repository or mirror counts only the records beyond what the first-hand publisher holds for the same species, point and year, so the counts are a lower bound on distinct records. Records stacked on a country or state centroid, a placeholder rather than a place, are dropped. Coordinates are rounded to 0.01 degrees. States are assigned from Natural Earth 1:50m polygons; a record off the generalised coastline (within 0.25 degrees) or on an island (within 2.0 degrees) is placed in the nearest state, and a record whose stated coordinate uncertainty reaches past its state's boundary counts for Australia only. Source: GBIF, CC0 1.0 and CC BY 4.0.
SpeciesRecordsWhere recordedYears
Aedes aegypti465Queensland 410, Northern Territory 35, New South Wales 12, Australian Capital Territory 1, Victoria 1, Western Australia 1, uncertain location 51915 to 2017
Aedes albopictus6Queensland 5, Victoria 12005 to 2012

Australia: coverage by state and all sources

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. In Australia it covers South Australia's weekly dengue notifications from SA Health. 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. By its et-25 bulletin (30 September 2026, data to 28 September 2026) metropolitan France stands at 6 autochthonous dengue cases across four transmission episodes, in the Tarn and l'Hérault (Occitanie), the Dordogne (Nouvelle-Aquitaine) and the Bouches-du-Rhône (Provence-Alpes-Côte d'Azur); 424 imported dengue cases were recorded for 1 May to 27 September 2026, the travel-associated reservoir that can seed local transmission. Transmission is by the Aedes albopictus tiger mosquito, established across much of southern and central metropolitan France. 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 8, Italy 76. 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.

How many dengue notifications has South Australia reported recently?

SA Health recorded 9 dengue notifications in South Australia in the 8 weeks from 30 August to 24 October 2026: 1 in the week ending 19 September 2026, 2 in the week ending 26 September 2026, 1 in the week ending 3 October 2026, 1 in the week ending 10 October 2026, 2 in the week ending 17 October 2026 and 2 in the week ending 24 October 2026. Counts are by week of notification, locally and overseas acquired cases are combined, and the counts are subject to change. South Australia only. The rest of Australia is not included.

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

  • SA Health, Weekly Report - Last 8 Weeks (notifiable conditions, South Australia)Source: SA Health, Weekly Report - Last 8 Weeks, CC BY 4.0. Extracted and reformatted by Mosticare. CC BY 4.0
  • GBIF occurrence records, mosquitoes (Culicidae) in Australia, CC0 1.0 and CC BY 4.0 onlyGBIF.org occurrence data. Dataset publishers are credited per dataset. CC0 1.0 and CC BY 4.0
    32 GBIF datasets
    • Walter Reed Biosystematics Unit, Smithsonian Institution. Mosquito Occurrence Dataset. Occurrence dataset https://doi.org/10.15468/tw2y9b accessed via GBIF.org on 2026-10-27. CC BY 4.0, 8,959 records
    • Queensland Museum (2026). Queensland Museum provider for OZCAM. Occurrence dataset https://doi.org/10.15468/lotsye accessed via GBIF.org on 2026-10-27. CC BY 4.0, 6,897 records
    • Commonwealth Scientific and Industrial Research Organisation (2026). Australian National Insect Collection. Occurrence dataset https://doi.org/10.15468/s1hm8r accessed via GBIF.org on 2026-10-27. CC BY 4.0, 2,299 records
    • Museums Victoria (2026). Museums Victoria provider for OZCAM. Occurrence dataset https://doi.org/10.15468/lp1ctu accessed via GBIF.org on 2026-10-27. CC0 1.0, 1,423 records
    • European Bioinformatics Institute (EMBL-EBI), GBIF Helpdesk (2026). INSDC Sequences. Version 1.190. European Nucleotide Archive (EMBL-EBI). Occurrence dataset https://doi.org/10.15468/sbmztx accessed via GBIF.org on 2026-10-27. CC BY 4.0, 1,073 records
    • iNaturalist contributors, iNaturalist (2026). iNaturalist Research-grade Observations. iNaturalist.org. Occurrence dataset https://doi.org/10.15468/ab3s5x accessed via GBIF.org on 2026-10-27. CC BY 4.0, CC0 1.0, 980 records
    • The International Barcode of Life Consortium (2026). International Barcode of Life project (iBOL). Occurrence dataset https://doi.org/10.15468/inygc6 accessed via GBIF.org on 2026-10-27. CC BY 4.0, 662 records
    • NSW Department of planning, industry and environment (2026). NSW BioNet Atlas. Occurrence dataset https://doi.org/10.15468/14jd9g accessed via GBIF.org on 2026-10-27. CC BY 4.0, 383 records
    • Atlas of Living Australia (2026). Dandjoo. Occurrence dataset https://doi.org/10.15468/4vq6up accessed via GBIF.org on 2026-10-27. CC BY 4.0, 361 records
    • Australian Museum (2026). Australian Museum provider for OZCAM. Occurrence dataset https://doi.org/10.15468/e7susi accessed via GBIF.org on 2026-10-27. CC BY 4.0, 305 records
    • Kraemer M U G, Sinka M E, Duda K A, Mylne A, Shearer F M, Brady O J, Messina J P, Barker C M, Moore C G, Carvalho R G, Coelho G E, Van Bortel W, Hendrickx G, Schaffner F, Wint G R W, Elyazar I R F, Teng H, Hay S I, Page R D M. Global compendium of Aedes aegypti occurrence. Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow. Occurrence dataset https://doi.org/10.15468/bgmqmr accessed via GBIF.org on 2026-10-27. CC0 1.0, 290 records
    • European Molecular Biology Laboratory Australia (2019). European Molecular Biology Laboratory Australian Mirror. Occurrence dataset https://doi.org/10.15468/ypsvix accessed via GBIF.org on 2026-10-27. CC BY 4.0, 212 records
    • Victorian Department of Energy, Environment and Climate Action (2026). Victorian Biodiversity Atlas. Occurrence dataset https://doi.org/10.15468/khlfs3 accessed via GBIF.org on 2026-10-27. CC BY 4.0, 89 records
    • Ciliberti P, Creuwels J (2026). Naturalis Biodiversity Center (NL) - Diptera. Naturalis Biodiversity Center. Occurrence dataset https://doi.org/10.15468/cl6p3l accessed via GBIF.org on 2026-10-27. CC0 1.0, 40 records
    • NatureMap (2019). Carnarvon Basin Wetland Invertebrate Survey. Occurrence dataset https://doi.org/10.15468/gpgvgr accessed via GBIF.org on 2026-10-27. CC BY 4.0, 38 records
    • NatureMap (2019). Carnarvon Basin (Aquatic Projects) - Invertebrates. Occurrence dataset https://doi.org/10.15468/6vptrw accessed via GBIF.org on 2026-10-27. CC BY 4.0, 38 records
    • NSW Department of Primary Industries (2026). NSW DPI Biosecurity Collections. Occurrence dataset https://doi.org/10.15468/7k7b25 accessed via GBIF.org on 2026-10-27. CC BY 4.0, 30 records
    • Data Management A (2026). ALA species sightings and OzAtlas. Atlas of Living Australia. Occurrence dataset https://doi.org/10.15468/jayxmn accessed via GBIF.org on 2026-10-27. CC BY 4.0, 26 records
    • NatureMapr (2026). NatureMapr. Occurrence dataset https://doi.org/10.15468/uye32x accessed via GBIF.org on 2026-10-27. CC BY 4.0, 24 records
    • Murray-Darling Basin Authority (2019). MDFRC macroinvertebrate survey. Occurrence dataset https://doi.org/10.15468/paioao accessed via GBIF.org on 2026-10-27. CC BY 4.0, 8 records
    • Kraemer M U G, Sinka M E, Duda K A, Mylne A, Shearer F M, Brady O J, Messina J P, Barker C M, Moore C G, Carvalho R G, Coelho G E, Van Bortel W, Hendrickx G, Schaffner F, Wint G R W, Elyazar I R F, Teng H, Hay S I, Page R D M. Global compendium of Aedes albopictus occurrence. Institute of Biodiversity, Animal Health and Comparative Medicine, College of Medical, Veterinary and Life Sciences, University of Glasgow. Occurrence dataset https://doi.org/10.15468/7apj8n accessed via GBIF.org on 2026-10-27. CC0 1.0, 5 records
    • Kelly T, Cooyou E, Murphy A, Cooyou J, Lewis Y, Barnes P, Andrews J, Brown J, Gudge S, Suominen S, Provoost P, Gillard E, Douvere F, Appeltans W (2026). UNESCO eDNA expedition in Ningaloo Coast (Australia): May 2023. Version 2.1. OBIS Secretariat. Occurrence dataset https://doi.org/10.25607/290ncx accessed via GBIF.org on 2026-10-27. CC0 1.0, 5 records
    • Tasmanian Museum and Art Gallery (2026). Tasmanian Museum and Art Gallery provider for OZCAM. Occurrence dataset https://doi.org/10.15468/ijp8p9 accessed via GBIF.org on 2026-10-27. CC BY 4.0, 4 records
    • Atlas of Living Australia (2024). Kangaroo Island Insect Collection. Occurrence dataset https://doi.org/10.15468/rhwnkz accessed via GBIF.org on 2026-10-27. CC BY 4.0, 3 records
    • Grinter C, Fong J (2026). CAS Entomology (ENT). Version 6.389. California Academy of Sciences. Occurrence dataset https://doi.org/10.15468/3ibpmo accessed via GBIF.org on 2026-10-27. CC0 1.0, 2 records
    • Wild A (2026). University of Texas, Biodiversity Center, Entomology Collection (UTIC). Version 1.338. University of Texas at Austin, Biodiversity Collections. Occurrence dataset https://doi.org/10.15468/sanyq7 accessed via GBIF.org on 2026-10-27. CC0 1.0, 2 records
    • South Australian Museum (2025). South Australian Museum Adelaide provider for OZCAM. Occurrence dataset https://doi.org/10.15468/wz4rrh accessed via GBIF.org on 2026-10-27. CC BY 4.0, 2 records
    • North Sydney Council (2026). Wildlife Watch NSC. Occurrence dataset https://doi.org/10.15468/4x6bze accessed via GBIF.org on 2026-10-27. CC BY 4.0, 1 record
    • Hubley B (2024). Royal Ontario Museum - Entomology Collection. Version 2.0. Royal Ontario Museum. Occurrence dataset https://doi.org/10.5886/p69k4g accessed via GBIF.org on 2026-10-27. CC BY 4.0, 1 record
    • Western Australian Museum (2024). Western Australian Museum provider for OZCAM. Occurrence dataset https://doi.org/10.15468/5qt0dm accessed via GBIF.org on 2026-10-27. CC BY 4.0, 1 record
    • Orrell T, Informatics and Data Science Center - Digital Stewardship (2026). NMNH Extant Specimen Records (USNM, US). Version 1.113. National Museum of Natural History, Smithsonian Institution. Occurrence dataset https://doi.org/10.15468/hnhrg3 accessed via GBIF.org on 2026-10-27. CC0 1.0, 1 record
    • Gilligan J, Wood C, DiBattista J, Jain F, Suominen S, Provoost P, Gillard E, Douvere F, Appeltans W (2026). UNESCO eDNA expedition in Lord Howe Island Group (Australia): January 2023. Version 1.1. OBIS Secretariat. Occurrence dataset https://doi.org/10.15468/mpevs2 accessed via GBIF.org on 2026-10-27. CC0 1.0, 1 record

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About this data

Mosticare aggregates and re-publishes vector-borne disease surveillance from ECDC, EFSA, national and state ministries of health, and GBIF. 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 incidence records and weekly notification counts are 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). The mosquito surveillance and species records on this page are not in the feeds. See the Global Mosquito Threat Map and the full data room.