[Prevention of health risks linked to extreme heat].

The prevention of the health risks linked to the excess of heat comprises 5 axes: the sensitisation of fragile persons, families and health personnel to the danger that extreme heat represents; informing and educating about the measures to take before summer and during the scorching heat, identification of persons at risk, protecting, surveilling and alerting them. Two messages predominate: refresh oneself at least 2 hours per day in a cool place (less than 26 degrees C), and drink before being thirsty and beyond the thirst. The efficacity of the measures depend upon the level of general awareness when faced with the health risk that is associated with extreme heat.