Table 4: Results of DDST method for isolated ESBL-producing Enterobacteriaceae resistant to 3rd GC antibiotics in ESBL screening test.
| Number (%) | CTX/AMX* | CAZ/AMX* | AZT/AMX* | CPD/AMX* |
| Bacterial isolates | ESBL, n (%) | ESBL, n (%) | ESBL, n (%) | ESBL, n (%) |
| E. coli (n = 45) | 13 (28.9%) | 9 (20%) | 6 (13.3%) | 2 (4.4%) |
| K. pneumoniae (n = 23) | 8 (34.8%) | 4 (17.4%) | 6 (26.1%) | 4 (17.4%) |
| P. mirabilis (n = 12) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| E. aerogenes (n = 8) | 1 (12.5%) | 2 (25%) | 1 (12.5%) | 0 (0%) |
| K. oxytoca (n = 6) | 1 (16.7%) | 1 (16.7%) | 1 (16.7%) | 0 (0%) |
| S. marcescens (n = 6) | 1 (16.7%) | 2 (33.3%) | 1 (16.7%) | 0 (0%) |
| E. cloacae (n = 2) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| C. freundii (n = 2) | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| Total | 24 (23.1%) | 18 (17.3%) | 15 (14.4%) | 6 (5.8%) |
*CAZ: Ceftazidime; CPD: Cefpodoxime; AZT: Aztreonam; CTX: Cefotaxime; AMX: Co-amoxiclav disc.