Key points

Measles

• Four locally acquired cases identified in 2025. No new cases in the past two weeks.

Arboviruses

• Chikungunya is circulating on a very limited scale (4 cases in week 41) and has no impact on the healthcare system. The last reported case of locally acquired dengue was confirmed in week 17, and the last imported case was in week 37.

Acute respiratory infections

• Influenza: confirmation that the epidemic has ended, with very low viral circulation.

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

Gastroenteritis

• Reunion is experiencing a gastroenteritis epidemic with a significant health impact among children under 5 years of age.