Key Points

• Nationwide, during Week 27 of 2026 (June 29–July 5), the number of deaths from all causes reported by INSEE was declining and appears to be returning to the usual range of fluctuation for the expected number across all ages, but remains elevated among those aged 15–64 (unconsolidated data).
• At the regional level, excess mortality across all age groups was still observed in the Île-de-France, Centre-Val de Loire, Grand Est, and Bourgogne-Franche-Comté regions in Week 27 of 2026 (unconsolidated data).
• In S28-2026 (July 6–12), at the national level, the number of electronically certified deaths reported by Inserm-CépiDc remained stable across all ages and age groups, with slightly higher numbers than those recorded before the heat wave (Week 26).