| Organism | n (%) |
| Coagulase-negative staphylococcus | 136 (33.5) |
| Klebsiella species | 69 (17.0) |
| Enterobacter species | 29 (7.1) |
| Escherichia coli | 26 (6.4) |
| Staphylococcus aureus | 22 (5.4) |
| Acinetobacter species | 21 (5.2) |
| Pseudomonas species | 18 (4.4) |
| Serratia species | 15 (3.7) |
| Other Gram-negative bacilli | 10 (2.5) |
| Group B streptococcus | 3 (0.7) |
| Other Gram-positive cocci | 26 (6.4) |
| Candida species | 25 (6.2) |
| Miscellaneous | 6 (1.5) |
| Total | 406 (100.0) |