| Strains | Number | Percentage (%) |
| Staphylococcus aureus | 54 | 67.5 |
| S. epidermidis | 3 | 3.75 |
| Cocci à Gram positif | 57 | 71.25 |
| Listéria sp | 3 | 3.75 |
| Bacillus cereus | 2 | 2.5 |
| Gram-positive bacilli | 5 | 6.25 |
| Total Gram-positive bacteria | 62 | 77.5 |
| Escherichia coli | 1 | 1.25 |
| Klebsiella pneumoniae | 1 | 1.25 |
| Citrobacter freundii | 2 | 2.5 |
| Lem. rachidii | 1 | 1.25 |
| Salmonella paratyphi A | 1 | 1.25 |
| Salmonella sp | 1 | 1.25 |
| Shigella sp | 1 | 1.25 |
| Steno. maltophila | 2 | 2.5 |
| Pseudomonas proteus | 3 | 3.75 |
| Pseudomonas sp | 4 | 5 |
| Enterobacteriaceae | 17 | 21.25 |
| Acinetobacter calcoaceticus | 1 | 1.25 |
| Non-fermenting Gram-negative bacilli | 1 | 1.25 |
| Total Gram-negative bacteria | 18 | 22.5 |
| Grand total | 80 | 100 |