Re-emergence of chikungunya virus in the Caribbean: travel-associated cases imported from Cuba to France, 2025

Key Points

• This research investigates the re-emergence of chikungunya virus in Cuba and its implications for public health in France.
• Identified cases of chikungunya virus infection among travellers returning from Cuba to France.
• Conducted phylogenetic analysis on viral genomes from the infection cases.
• Analyzed the geographical and genetic links to recent Latin American sequences.
• Chikungunya virus re-emerged in Cuba after nine years without local transmission, reporting over 51,000 cases.
• Ten infected travellers returned to France from Cuba, indicating the potential for international spread.
• Phylogenetic analysis showed these cases belong to the ECSA-2 genotype, related to recent outbreaks in Latin America.

Abstract