Bacterial pulmonary infections due to immunosuppression.
D000328:Adult; D000368:Aged; D001424:Bacterial Infections / Q000209:etiology*; D005260:Female; D006090:Gram-Negative Bacteria / Q000302:isolation & purification; D006801:Humans; D007109:Immunity / Q000187:drug effects / Q000528:radiation effects; D007165:Immunosuppression Therapy / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D012141:Respiratory Tract Infections / Q000209:etiology*