text_1: There was an estimated 30 million cases of pneumonia in young children worldwide in 2010.
text_2: METHODS We estimated the incidence of admissions for severe and very severe ALRI in children younger than 5 years, stratified by age and region, with data from a systematic review of studies published between Jan 1, 1990, and March 31, 2012, and from 28 unpublished population-based studies.