title: Epidemiology and natural history of respiratory infections in children.
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000397:Air Pollution; D001990:Bronchiolitis, Viral; D001991:Bronchitis; D002648:Child; D002675:Child, Preschool; D003139:Common Cold; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007827:Laryngitis; D009975:Orthomyxoviridae; D011014:Pneumonia; D012136:Respiratory Syncytial Viruses; D012141:Respiratory Tract Infections / Q000235:genetics / Q000382:microbiology / Q000401:mortality; D018108:Respirovirus; D012959:Socioeconomic Factors