Public Health Monitoring in Réunion. Bulletin dated August 14, 2026.

Key Points 

Smallpox B (Mpox) 

  • 23 imported cases from Madagascar and 5 locally acquired cases. Secondary spread from imported cases is limited, and local transmission is restricted.

Dengue, Chikungunya

  • 334 cases of dengue and 55 cases of chikungunya have been reported. During this winter season, only sporadic cases are being reported, and there is no active transmission. Surveillance continues, but during the winter season, only data on the number of cases will be presented in this bulletin.

Acute Respiratory Infections

  • Hospital health indicators (emergency department visits and hospitalizations for flu-like illnesses and acute lower respiratory tract infections) remain low despite moderate circulation of influenza viruses, with an increasing positivity rate.

Bronchiolitis in children under 1 year of age

  • Health indicators remain stable.

Acute gastroenteritis 

  • Indicators are at a low level.

Leptospirosis

  • Off-season period; low transmission rate. 

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