Infection in chronic lung disease.
D001424:Bacterial Infections / Q000150:complications; D001991:Bronchitis / Q000150:complications*; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D008171:Lung Diseases / Q000150:complications*; D009175:Mycoplasma Infections / Q000150:complications; D012141:Respiratory Tract Infections / Q000150:complications* / Q000382:microbiology / Q000517:prevention & control; D014777:Virus Diseases / Q000150:complications