[Asthma incidence in Huelva, Spain at 2 stages of life: childhood and young adulthood].

Objective: Few studies have evaluated the incidence of asthma in Spain. Although more children than adults develop asthma every year, no study to date has analyzed the differences in incidence by following 2 age cohorts in the same geographical area. The aim of this study was to determine changes in wheezing, bronchial hyperreactivity, and asthma (in terms of onset, persistence, and remission), changes in forced expiratory volume in 1 second (FEV(1)), and asthma incidence in children (11-16 years) and young adults (20-44 years) in the city of Huelva, Spain.