Why despite the lower prevalence, asthma is more severe in the Brasilian semiarid region?

Introduction or background: Asthma is a chronic inflammatory disease of the airways, very prevalent throughout the world and climatic factors, especially air humidity, have been considered to be fundamental. Aims and objectives: To study a relationship between climate and/or humidity factor and severity of asthma in the semiarid region, comparing it to the coast and the intermediate region hinterlands of Brazil. Method:...