Key Points

Chikungunya

• Since August 23, 2024, 3,390 cases of chikungunya have been reported on the island, including 3,245 in 2025.

• The epidemic has accelerated sharply, with nearly 1,300 cases detected in August. On the island, 23 of the 24 municipalities have reported at least one case.

• Reunion is experiencing a chikungunya outbreak.

Acute gastroenteritis

• Health indicators remain at their baseline levels.

Leptospirosis

• Fourteen cases have been reported to the ARS since January 1, 2025

• Recent heavy rains and flooding could lead to an increase in the number of cases in the coming weeks.

Acute respiratory infections (ARI)

• Hospitals are seeing an increase in emergency room visits and hospitalizations due to bronchiolitis among children under two years of age.