Key PointsChikungunya, Dengue, and Zika Local cases No locally acquired cases have been identified in mainland France.Imported cases From May 1, when enhanced surveillance began, through...

Key PointsChikungunya, Dengue, and ZikaLocal casesNo locally acquired cases have been identified in mainland France.Imported casesFrom May 1, when enhanced surveillance began, through...

Key PointsIn 2025: a record number of imported chikungunya cases, linked to the outbreak in the Indian Ocean. Imported cases were also reported from Asia, Cuba, and sub-Saharan...

Key PointsIn 2025, during the enhanced surveillance period (May 1 to November 30) 62 autochthonous human cases of West Nile virus infection were identified in six regions of mainland...

Key Points Chikungunya, dengue, ZikaEnhanced surveillance from May to November aimed at early case detection and reducing the risk of transmission within the region; epidemiological...

Key PointsIn Auvergne-Rhône-Alpes, in 2025, a record number of arbovirus cases:57 locally transmitted cases (53 chikungunya, 4 dengue)8 local outbreaks identified in 6 departments347...

Key Points Chikungunya, Dengue, and Zika Indigenous cases As of November 24, 2025, 93 outbreaks of locally transmitted chikungunya and dengue and a total of 834 cases have been...

Key Points Chikungunya / Dengue / Zika In Occitanie, from May 1 to November 18, 2025, the following cases were identified: 108 imported cases of dengue, 106 imported cases of...

Key Points Chikungunya, Dengue, and Zika Indigenous cases As of November 17, 2025, 94 outbreaks of locally transmitted chikungunya and dengue and a total of 833 cases have been...

Introduction - Surveillance for West Nile virus (WNV)—a vector-borne zoonosis—in Guadeloupe was established following the virus’s first detection in 2002, with the aim of ensuring early...