Key Points

Chikungunya

• Since the detection of the first locally transmitted cases of chikungunya in August 2024, a total of 256 cases have been reported.

• The geographic spread is increasing, with cases detected in municipalities that had previously been free of the disease.

• Reunion is experiencing a chikungunya epidemic.

Acute respiratory infections

• For influenza and bronchiolitis, health indicators remain at baseline levels with a low health impact.

Gastroenteritis

• Moderate increase in hospital admission rates across all age groups.

Leptospirosis

• A single probable case, currently under validation, has been reported to the ARS since January 1, 2025.