Key Points Since the detection of the first case of chikungunya in French Guiana at the end of January, 38 cases have been biologically confirmed by RT-PCR by hospital and private...

Key Points 2025, an exceptional year for chikungunya transmission in mainland France and Occitanie: a very high number of imported cases from the start of enhanced surveillance, linked...

Key points Hospitalized cases 554 cases hospitalized for more than 24 hours reported to the Santé publique France regional office in Réunion, including 138 severe cases; 4 distinct...

Key Points In 2024, in the Pays de la Loire region: The tiger mosquito will be present in all departments of the Pays de la Loire region. The number of municipalities colonized by the...

Key Points High overall immunity across the island (66.0%) and in each district (ranging from 58.1% to 74.3%). Low risk of a new large-scale outbreak during the 2025–2026 southern...

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...

Key Points Chikungunya / Dengue / Zika In Occitanie, from May 1 to November 4, 2025, the following were identified: 99 imported cases of dengue, 103 imported cases of chikungunya, and...

From May 1 to November 30 each year, Santé publique France coordinates enhanced seasonal surveillance for chikungunya, dengue, Zika, and West Nile virus.