Health Monitoring in Réunion. Bulletin of October 31, 2025.

Key Points

Arboviral Diseases

  • No cases of chikungunya reported in week 42 (and 4 cases in week 41). *

  • The last reported case of locally acquired dengue was confirmed in week 17, and the last imported case in week 37.

Acute respiratory infections

  • Influenza: Confirmation that the epidemic has ended, but with several other respiratory viruses still circulating

  • Bronchiolitis: Health indicators remain at a high level for this time of year.

Gastroenteritis

  • Reunion Island remains in the midst of a gastroenteritis epidemic with a significant health impact among children under 5.

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