Environnement et maladies dans le Sahel (Afrique de l'Ouest): Un entre-deux-mondes

Between two worlds: environment and diseases in the West African Sahel.- The Sahel is a meeting area of the Saharan and Sudanic climates, economies and cultures, and also of epidemics. The rainy season pathology is not the same for nomadic pastoralists and sedentary agriculturists: the "lean cows" season of the former, at the end of the dry season, is not the same as the latter's "empty granaries" period when the rains end up. Due to their nomadism and seasonal dispersal, pastoralists, while they are especially exposed to the pathology associated with cattle, benefit far less than agriculturists from the action of the medical services.