Key points

Measles

• Three locally acquired cases identified in 2025. No new cases in S41.

Arboviral diseases

• Chikungunya is circulating on a very limited basis (3 cases in S40) 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 S37.

Acute respiratory infections

• Influenza: End of the influenza epidemic following a continued decline in health and virological indicators.

• Bronchiolitis: increase in health and virological indicators.

Gastroenteritis

• Reunion is experiencing a gastroenteritis epidemic.