Overview of chikungunya viral transmission, French Guiana, 2026
In January 2026, French Guiana detected its first confirmed chikungunya case, initiating a second outbreak after the first one which occurred in 2014/15. The expected seroprevalence for 2026 is estimated at 16.2%, with the virus likely spreading eastward from the west of French Guiana. The causative East/Central/South African (ECSA) strain, lacking the vector-adaptive E1-A226V mutation, may reduce transmission risk in mainland France and Europe, but Caribbean Islands remain vulnerable due to the vector's presence.
Authors
- Tiphanie Succo (ORCID: https://orcid.org/0000-0002-6924-6864)
- Marion Petit Sinturel
- Frédéric Jourdain (ORCID: https://orcid.org/0000-0001-6485-8952)
- F Djossou
- Antoine Enfissi
- Tsiriniaina Ramavoson
- Dominique Rousset
- Crepin Kezza
Institutions
- Centre Hospitalier Universitaire de La Réunion (RE)
- Santé Publique France (FR)
- Institut Pasteur de la Guyane (GF)
- Centre Hospitalier Andrée Rosemon (GF)
- Public Health Agency (GB)
- Institut thématique Santé Publique (FR)
Publication Details
- Journal
- Eurosurveillance
- Published
- 2026-05-21
- DOI
- https://doi.org/10.2807/1560-7917.es.2026.31.20.2600296
- Primary Topic
- Mosquito-borne diseases and control
- Type
- article
- Field-Weighted Citation Impact
- 0.00