Key Points Local cases No indigenous cases have been identified in mainland France. Imported cases From May 1, the start of enhanced surveillance, through May 27, 2025, the following...

Key points Reunion has been in the epidemic decline phase since Week 17. However, the virus continues to circulate and remains active throughout the island. Although declining, the...

Key Points A total of 326 confirmed cases of chikungunya were recorded between S10 and S20-2025. Chikungunya is circulating across nearly the entire territory of Mayotte, with a higher...

Key Points In Occitanie, from May 1 to 20, 2025, 20 imported cases of dengue and 36 imported cases of chikungunya were identified. To limit the risk of local transmission, 50...

Key Points Domestic cases No domestic cases have been identified in mainland France. Imported cases From May 1, the start of enhanced surveillance, through May 20, 2025, the following...

Key Points After five weeks of intense epidemic activity peaking in Week 16, all indicators have been steadily declining since Week 17, confirming that Réunion is in a phase of...

Key Points Epidemiological Surveillance In 2023–2024, 283 cases of arbovirus diseases were reported in the region 86 cases were reported in 2023 and 197 in 2024 All were cases of...

Key Points A total of 176 confirmed cases of chikungunya were recorded between weeks 10 and 19 of 2025, including 101 locally acquired cases, 32 imported cases, and 43 cases of unknown...

Every year, May 1 marks the start of an enhanced surveillance period for arboviral diseases—such as dengue, chikungunya, and Zika—in metropolitan France, as well as the implementation of...

Key Points In 2024 in mainland France, 4,683 imported cases of dengue, 34 imported cases of chikungunya, 8 imported cases of Zika, and one dengue-chikungunya co-infection were reported...