The "intrinsic" or "infectious" label.
D000328:Adult; D001249:Asthma / Q000175:diagnosis* / Q000209:etiology / Q000276:immunology; D002675:Child, Preschool; D003141:Communicable Diseases / Q000150:complications*; D003937:Diagnosis, Differential; D006801:Humans; D012141:Respiratory Tract Infections / Q000150:complications; D009626:Terminology as Topic