Key Points Chikungunya, dengue, and Zika Enhanced surveillance in mainland France began on May 1. The current chikungunya outbreak in Réunion and the dengue outbreak in Guadeloupe are...

Key Points Chikungunya, dengue, and Zika Significant impact of the chikungunya outbreak in Réunion and the dengue outbreak in Guadeloupe on surveillance in mainland France. Since the...

Key Points In Week 18 (April 28–May 4, 2025), which coincided with the start of the school year for Zone C, emergency department visits and subsequent hospitalizations were on the rise...

Key Points In Week 18 (April 28–May 4, 2025), activity at SOS Médecins clinics decreased among children under 2 years of age (-9%, or 499 fewer visits) and among adults, primarily those...

Key Points At the national level, the number of deaths from all causes reported by INSEE remains within the usual range of fluctuation across all age groups in S17-2025. At the...

Key Points Among children, the number of cases for most of the indicators tracked decreased in April 2025 compared to the previous month, in line with the spring break for the three...

Key Points The enhanced surveillance system for dengue, chikungunya, and Zika was activated from May 1 to November 30, the period of activity for the tiger mosquito (Ae. albopictus) in...

Key Points Acute gastroenteritis Declining activity (though still high in emergency departments) In emergency departments, activity related to gastroenteritis remains high in Week 18...

Key Points COVID-19 127 emergency room visits (stable); incomplete data from SOS Médecins Dengue, chikungunya, and Zika Enhanced surveillance from May 1 to November 30 in mainland France