Distribution of 979 bacterial isolates in 800 positive cultures
| Isolated organisms | Single species | Mixed with other bacteria | Mixed with other microbes | Total (n (%)) |
| Gram-positive organisms | ||||
| Staphylococcus epidermidis | 171 | 97 | 42 | 310 (31.7) |
| Staphylococcus aureus | 71 | 22 | 20 | 113 (11.5) |
| Viridans streptococcus | 31 | 40 | 2 | 73 (7.5) |
| Diphtheroids | 20 | 38 | 11 | 69 (7) |
| Streptococcus pneumoniae | 31 | 14 | 1 | 46 (4.7) |
| Methicillin-resistant S. aureus | 9 | 10 | 5 | 24 (2.5) |
| Haemolytic streptococci | 7 | 10 | 4 | 21 (2.1) |
| Bacillus species | 12 | 6 | 1 | 19 (1.9) |
| Enterococcus species | 2 | 10 | – | 12 (1.2) |
| Propionibacterium acnes | – | 4 | – | 4 (0.4) |
| Micrococcus species | 3 | – | – | 3 (0.3) |
| Streptococcus mitis | 1 | – | – | 1 (0.1) |
| Lactococcus lactis | – | 1 | – | 1 (0.1) |
| Subtotal | 358 | 252 | 86 | 696 (71.1) |
| Gram-negative organisms | ||||
| Pseudomonas aeruginosa | 63 | 47 | 7 | 117 (12) |
| Coliforms | 59 | 37 | 8 | 104 (10.6) |
| Proteus species | 10 | 7 | 1 | 18 (1.8) |
| Haemophilus influenzae | 12 | 2 | 2 | 16 (1.6) |
| Moraxella catarrhalis | 11 | 2 | 1 | 14 (1.4) |
| Neisseria species | 4 | 3 | 1 | 8 (0.8) |
| Serratia marcescens | 4 | – | – | 4 (0.4) |
| Acinetobacter iwoffii | 1 | 1 | – | 2 (0.2) |
| Subtotal | 164 | 99 | 20 | 283 (28.9) |
| Total | 522 | 351 | 106 | 979 (100) |