TABLE 3.
Antimicrobial susceptibility of Gram-negative bloodstream infection isolates at Duke University Medical Center from 2002 to 2015a
| Organism | No. of isolates detected/total no. of isolates examined (%) |
||
|---|---|---|---|
| MDR | XDR | PDR | |
| Enterobacteriaceae | 420/1,343 (31) | 4/1,343 (<1) | 0/1,343 (0) |
| Escherichia coli | 259/577 (45) | 0/577 (0) | 0/577 (0) |
| Klebsiella pneumoniae | 57/307 (19) | 2/307 (1) | 0/307 (0) |
| Proteus mirabilis | 10/65 (15) | 0/65 (0) | 0/65 (0) |
| Serratia marcescens | 5/97 (5) | 0/97 (0) | 0/97 (0) |
| Klebsiella oxytoca | 9/42 (21) | 0/42 (0) | 0/42 (0) |
| Enterobacter cloacae | 34/106 (32) | 2/106 (2) | 0/106 (0) |
| Enterobacter aerogenes | 15/43 (34) | 0/43 (0) | 0/43 (0) |
| Salmonella species | 7/27 (26) | 0/27 (0) | 0/27 (0) |
| Citrobacter freundii | 18/28 (64) | 0/28 (0) | 0/28 (0) |
| Citrobacter koseri | 0/9 (0) | 0/9 (0) | 0/9 (0) |
| Morganella morganii | 1/13 (8) | 0/10 (0) | 0/13 (0) |
| Pantoea agglomerans | 1/5 (20) | 0/5 (0) | 0/(0) |
| Providencia rettgeri | 0/2 (0) | 0/2 (0) | 0/2 (0) |
| Providencia stuartii | 4/7 (57) | 0/7 (0) | 0/7 (0) |
| Other Enterobacteriaceae | 1/14 (7) | 0/14 (0) | 0/14 (0) |
| Non-lactose fermenters | 80/262 (31) | 46/262 (18) | 4/262 (2) |
| Pseudomonas aeruginosa | 45/158 (28) | 23/158 (15) | 0/158 (0) |
| Acinetobacter species | 5/26 (19) | 4/26 (15) | 2/26 (8) |
| Stenotrophomonas maltophilia | 8/26 (31) | 8/26 (31) | 0/26 (0) |
| Burkholderia species | 4/9 (44) | 4/9 (44) | 1/9 (11) |
| Ochrobactrum species | 5/6 (83) | 0/6 (0) | 0/6 (0) |
| Sphingomonas species | ND/6 | ND/6 | ND/6 |
| Achromobacter species | 3/3 (100) | 2/3 (67) | 1/3 (33) |
| Alcaligenes species | 3/3 (100) | 1/3 (33) | 0/3 (0) |
| Moraxella species | ND/2 | ND/2 | ND/2 |
| Roseomonas species | ND/4 | ND/4 | ND/4 |
| Brevundimonas species | 2/3 (67) | 0/3 (0) | 0/3 (0) |
| Bordetella species | ND/2 | ND/2 | ND/2 |
| Chryseobacterium species | 2/2 (100) | 1/2 (50) | 0/2 (0) |
| Other non-lactose fermenters | 5/12 (42) | 3/12 (25) | 0/12 (0) |
a
Antimicrobial susceptibility profiles for anaerobes and Pasteurellaceae are not included here since antimicrobial susceptibility testing for these bacteria are not routinely performed. Abbreviations: MDR, multidrug resistant; ND, not determined (by the Duke Clinical Microbiology Laboratory); PDR, pandrug resistant; XDR, extensively drug resistant.