Key Points

• According to Météo France, from May 28 to 30, four departments in the region were placed under an orange alert: Loire-Atlantique, Maine-et-Loire, Mayenne, and Vendée.
• A regional analysis of emergency care utilization indicates a slight increase in the iCanicule composite health indicator (including heatstroke, dehydration, and hyponatremia) during the heatwave. This trend falls within the expected fluctuations for the current weather conditions.
• The trends in the monitored indicators are consistent across departments.
• Heat poses a health risk to the entire population. The observed health impacts underscore the importance of implementing preventive measures to mitigate the effects of heat.