| Antibiotic (s) | No. (%) of resistant isolates | ||||
| 2017 (n = 60) | 2018 (n = 90) | 2019 (n = 130) | 2020 (n = 130) | 2021 (n = 175) | |
| Metronidazole | 46 (76.67) | 70 (77.78) | 99 (76.92) | 100 (n = 77.21) | 135 (77.14) |
| Clarithromycin | 6 (10) | 20 (22.22) | 32 (24.61) | 35 (26.92) | 48 (27.42) |
| Amoxicillinb | 8 (13.33) | 11 (12.22) | 11 (8.46) | 32 (24.61) | 46 (26.58) |
| Metronidazole + clarithromycin | 6 (10) | 12 (13.33) | 22 (16.92) | 24 (18.46) | 41 (23.42) |
| Metronidazole + amoxicillin | 6 (10) | 8 (n = 8.89) | 10 (7.69) | 17 (13.08) | 28 (16) |
| Metronidazole + clarithromycin + amoxicillin | 2 (3.33) | 4 (4.44) | 9 (6.92) | 14 (10.77) | 22 (12.57) |