Key Points

• A heat wave affected six departments in the Bourgogne-Franche-Comté region: Côte-d’Or, Doubs, Jura, Haute-Saône, Saône-et-Loire, and Yonne, from August 2, 2022, to August 4, 2022.

• Total healthcare utilization: No increase in emergency care utilization across all age groups between August 2, 2022, and August 4, 2022.

• Healthcare utilization for the iCanicule1 composite indicator: An increase between August 2, 2022, and August 4, 2022, in the proportion of emergency department visits for iCanicule among coded visits (ages 75 and older and all ages) and in the proportion of hospitalizations following visits for iCanicule among coded hospitalizations across all age groups.