title: Pneumonias caused by gram-negative bacilli.
mesh_terms: D000328:Adult; D001442:Bacteroides Infections / Q000175:diagnosis; D002648:Child; D004927:Escherichia coli Infections / Q000175:diagnosis; D005260:Female; D006192:Haemophilus Infections / Q000175:diagnosis; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011014:Pneumonia / Q000209:etiology*; D011512:Proteus Infections / Q000175:diagnosis; D011552:Pseudomonas Infections / Q000175:diagnosis