Table 1.

Microbiological Findings in 1166 Pediatric Patients Hospitalized With Gram-Negative Bacteremia From 2002 Through 2011

Organism	No. (%)
Acinetobacter baumannii	69 (5.9)
Escherichia coli	194 (16.6)
Citrobacter species	44 (3.8)
Citrobacter freundii	41 (3.5)
Citrobacter koseri	3 (0.3)
Enterobacter species	207 (17.8)
Enterobacter aerogenes	22 (1.9)
Enterobacter agglomerans	11 (0.9)
Enterobacter asburiae	6 (0.5)
Enterobactercloacae	168 (14.4)
Klebsiella species	321 (27.5)
Klebsiella oxytoca	53 (4.5)
Klebsiella ozaenae	18 (1.5)
Klebsiella pneumoniae	250 (21.4)
Proteus mirabilis	5 (0.4)
Pseudomonas species	257 (22.0)
Pseudomonas aeruginosa	239 (20.5)
Pseudomonas fluorescens	15 (1.2)
Pseudomonas putida	3 (0.3)
Serratia marcescens	69 (5.9)