A multicenter observational prospective study to examine the incidence and prevalence of child in participants from infancy through middle life. From pediatric pulmonology centers around the world, which serve the pediatric population, a total of cases of child were reported. The number of new cases per million kids annually, on average. The typical child population. Children under one year olds had the highest prevalence rate. Compared to children between the ages of birth and two, different forms of problems were more prevalent in children between the ages of two and middle childhood. Primary pulmonary interstitial glycogenosis in newborns, neuroendocrine cell hyperplasia of infancy in
children, idiopathic pulmonary haemosiderosis in children between the ages of one and five, and hypersensitivity were the most common instances.
