Chikungunya, Dengue, Zika, and West Nile in Auvergne-Rhône-Alpes. 2025 Report.

Key Points

In 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 departments
  • 347 imported cases (177 chikungunya, 168 dengue, 2 Zika)
  • 80% of the regional population exposed to the tiger mosquito
  • 133 vector control treatments

In relation to

Chikungunya

thematic dossier

Chikungunya is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain.

Dengue

thematic dossier

Dengue fever is a viral disease transmitted by mosquitoes of the genus Aedes. The most common symptoms are fever and joint pain. Its complications can be severe.

Zika

thematic dossier

Zika is a viral disease transmitted primarily by mosquitoes but also through sexual contact. Symptoms are usually mild, but the virus can cause birth defects if a woman becomes infected during...

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