title: [Serologic and clinical studies of chlamydial infection in children with respiratory tract infection].
mesh_terms: D000293:Adolescent; D000907:Antibodies, Bacterial / Q000032:analysis*; D002648:Child; D002675:Child, Preschool; D002690:Chlamydia Infections / Q000276:immunology*; D002691:Chlamydophila psittaci / Q000276:immunology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011019:Pneumonia, Mycoplasma / Q000276:immunology; D011022:Pneumonia, Rickettsial / Q000276:immunology; D012141:Respiratory Tract Infections / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial