Overview

• Over 20,242 chikungunya cases have been reported in La Réunion since August 2024, with a 40% weekly increase recorded between March 17 and March 23, 2025.
• The epidemic has generalized across the island, with Tampon reporting 4,700 cases, making it the most affected area, followed by Saint-Denis, Saint-Paul, and Saint-Pierre.
• Severe cases have risen to 31, primarily affecting elderly adults and infants under two months, with 14 newborns hospitalized in critical condition, including cases of encephalitis from mother-to-child transmission.
• Health authorities are urging preventive measures, such as using repellents, mosquito nets, and eliminating stagnant water, to curb the spread of the disease.
• Vaccination campaigns are expected to begin imminently, prioritizing high-risk groups, as the epidemic is projected to peak between mid-April and the end of April 2025.