title: Severe acute lower respiratory tract infection: etiology and management.
mesh_terms: D001419:Bacteria / Q000302:isolation & purification; D001424:Bacterial Infections / Q000382:microbiology*; D001991:Bronchitis / Q000382:microbiology; D002648:Child; D006801:Humans; D008826:Microbial Sensitivity Tests; D011014:Pneumonia / Q000382:microbiology*