Key points Bronchiolitis (under 1 year of age) Non-epidemic activity. Low number of visits to hospital emergency departments and SOS Médecins consultations. Low detection of RSV...

Key Points Dengue Dengue activity has been low over the past two weeks in the CDPSs, local hospitals, and the emergency departments of the three CHU sites. Chikungunya Since the...

Key Points The number of malaria cases declined in 2025 to 181 after two years of increases, representing a 57% decrease compared to 2024 (425 cases) and an incidence rate of 0.6 per...

Key points Smallpox B (Mpox) 8 cases (including 4 imported cases) were reported in Réunion between S05 and S13/2026. Leptospirosis A seasonal resurgence of leptospirosis is currently...

Key Points Chikungunya 70 cases of chikungunya were reported in Week 12 in Mayotte, representing a 37% decrease compared to Week 11 (111 cases), although these data have not yet been...

Key Points Invasive Haemophilus influenzae infections have been steadily increasing since the early 2000s. The highest incidence rates are observed among infants and the...

Key Points In 2023, 78,047 deaths were recorded among residents of Île-de-France, representing a standardized annual rate of 686 per 100,000 inhabitants. A decrease of 4,387 deaths...

When a new strain of influenza virus that can infect humans emerges, a flu pandemic occurs. In France, surveillance measures are in place for avian influenza.

Avian influenza is a viral zoonosis. Currently, more than a dozen types of avian or swine influenza A viruses can infect humans.