Key Points

• Heat wave in the Nouvelle-Aquitaine region from August 6 to 11, 2020, with 8 departments (Charente, Corrèze, Creuse, Dordogne, Lot-et-Garonne, Deux-Sèvres, Vienne, Haute-Vienne) placed under an orange alert.

• Total healthcare utilization: an increase in emergency room visits for all causes (all ages) was observed during the heatwave, which continued until August 16, 2020.

• Healthcare utilization for the iCanicule composite indicator: increased activity at emergency departments and SOS Médecins associations for the iCanicule composite indicator during this episode, which remained sustained in the following days.