Overview

• Santé publique France recorded 560 confirmed chikungunya cases in Mayotte in 2025, with 204 infections reported from May 19-25.
• Officials warn the outbreak may be undercounted due to suspended lab testing in emergency services and partial healthcare access in isolated areas.
• A decree published in the Official Journal authorizes Ixchiq vaccinations for residents aged 18 to 64 with at least one comorbidity.
• Fifteen people have been hospitalized, including eight pregnant women under surveillance and five infants under one year, with no ICU admissions or fatalities so far.
• In La Réunion, the epidemic that began in August 2024 has yielded tens of thousands of cases and about a dozen deaths.