Table 5 Correlation between antibiotic resistance pattern of the Enterococcal isolates and biofilm formation ability
Antibiotics | Antimicrobial resistance pattern | No. (%) of isolates with biofilm production ability | Total | P- value | |||
|---|---|---|---|---|---|---|---|
Negative | Weak | Moderate | Strong | ||||
Ampicillin | Resistant | 9 (56.2) | 3 (18.7) | 3 (18.7) | 1 (6.2) | 16 | 0.150 |
Intermediate Resistant | - | - | - | - | - | ||
Susceptible | 37 (28.6) | 38 (29.4) | 31 (24.0) | 23 (17.8) | 129 | ||
Vancomycin | Resistant | 3 (60) | 2 (40) | 0 | 0 | 5 | 0.277 |
Intermediate Resistant | 2 (28.5) | 4 (57.1) | 1 (14.2) | 0 | 7 | ||
Susceptible | 41 (30.8) | 35 (26.3) | 33 (24.8) | 24 (18.0) | 133 | ||
Teicoplanin | Resistant | 2 (50) | 2 (50) | 0 | 0 | 4 | 0.429 |
Intermediate Resistant | - | - | - | - | - | ||
Susceptible | 44 (31.2) | 39 (27.6) | 34 (24.1) | 24 (17.0) | 141 | ||
Erythromycin | Resistant | 19 (28.7) | 18 (27.2) | 15 (22.7) | 14 (21.2) | 66 | 0.899 |
Intermediate Resistant | 16 (32.6) | 15 (30.6) | 12 (24.4) | 6 (12.2) | 49 | ||
Susceptible | 11 (36.6) | 8 (26.6) | 7 (23.3) | 4 (13.3) | 30 | ||
Tetracycline | Resistant | 18 (27.6) | 16 (24.6) | 14 (21.5) | 17 (26.1) | 65 | 0.180 |
Intermediate Resistant | 1 (20) | 2 (40) | 1 (20) | 1 (20) | 5 | ||
Susceptible | 27 (36) | 23 (30.6) | 19 (25.3) | 6 (8) | 75 | ||
Ciprofloxacin | Resistant | 17 (38.6) | 10 (22.7) | 11 (25) | 6 (13.6) | 44 | 0.885 |
Intermediate Resistant | 20 (30.3) | 20 (30.3) | 15 (22.7) | 11 (16.6) | 66 | ||
Susceptible | 9 (25.7) | 11 (31.4) | 8 (22.8) | 7 (20) | 35 | ||
Levofloxacin | Resistant | 5 (27.7) | 6 (33.3) | 4 (22.2) | 3 (16.6) | 18 | 0.144 |
Intermediate Resistant | 7 (70) | 3 (30) | 0 | 0 | 10 | ||
Susceptible | 34 (29.0) | 32 (27.3) | 30 (25.6) | 21 (17.9) | 117 | ||
Nitrofurantoin | Resistant | 1 (100) | 0 | 0 | 0 | 1 | 0.182 |
Intermediate Resistant | 3 (100) | 0 | 0 | 0 | 3 | ||
Susceptible | 42 (29.7) | 41 (29.0) | 34 (24.1) | 24 (17.0) | 141 | ||
Quinupristin/dalfopristin | Resistant | 23 (26.1) | 24 (27.2) | 23 (26.1) | 18 (20.4) | 88 | 0.024 |
Intermediate Resistant | 16 (59.2) | 5 (18.5) | 5 (18.5) | 1 (3.7) | 27 | ||
Susceptible | 7 (23.3) | 12 (40) | 6 (20) | 5 (16.6) | 30 | ||
Linezolid | Resistant | 0 | 4 (80) | 0 | 1 (20) | 5 | 0.156 |
Intermediate Resistant | 2 (28.5) | 1 (14.2) | 3 (42.8) | 1 (14.2) | 7 | ||
Susceptible | 44 (33.0) | 36 (27.0) | 31 (23.3) | 22 (16.5) | 133 | ||
Gentamicin | Resistant | 6 (33.3) | 4 (22.2) | 3 (16.6) | 5 (27.7) | 18 | 0.486 |
Intermediate Resistant | 0 | 0 | 1 (100) | 0 | 1 | ||
Susceptible | 40 (31.7) | 37 (29.3) | 30 (23.8) | 19 (15.0) | 126 | ||
Streptomycin | Resistant | 9 (32.1) | 5 (17.8) | 4 (14.2) | 10 (35.7) | 28 | 0.016 |
Intermediate Resistant | - | - | - | - | - | ||
Susceptible | 37 (31.6) | 36 (30.7) | 30 (25.6) | 14 (11.9) | 117 | ||
Kanamycin | Resistant | 37 (33.6) | 27 (24.5) | 27 (24.5) | 19 (17.2) | 110 | 0.547 |
Intermediate Resistant | 0 | 1 (100) | 0 | 0 | 1 | ||
Susceptible | 9 (26.4) | 13 (38.2) | 7 (20.5) | 5 (14.7) | 34 | ||
Chloramphenicol | Resistant | 4 (21.0) | 4 (21.0) | 3 (15.7) | 8 (42.1) | 19 | 0.026 |
Intermediate Resistant | 2 (28.5) | 4 (57.1) | 0 | 1 (14.2) | 7 | ||
Susceptible | 40 (33.6) | 33 (27.7) | 31 (26.0) | 15 (12.6) | 119 | ||