Table 4. Multidrug resistance profiles of Enterobacteriaceae isolates from chicken droppings in poultry farms at Gondar city, Northwest Ethiopia, March to June 2022.
| Resistance pattern | No. of antibiotics (classes) | Type of isolate N | |||||
|---|---|---|---|---|---|---|---|
| E. coli N = 87 | K. pneumoniae N = 11 | P. mirabilis N = 18 | E. cloacae N = 4 | Salmonella spp. N = 23 | Total N = 143 | ||
| Susceptible for all drug | -- | 4 | - | - | - | 3 | 7 |
| TET | 1 (1) | 3 | - | - | - | 2 | 5 |
| AMP | 1 (1) | 4 | 1 | - | - | - | 5 |
| AMP TET | 2 (2) | 3 | 1 | 4 | 1 | - | 9 |
| AMP SXT | 2 (2) | - | - | - | - | 1 | 1 |
| AMP, TET, SXT | 3 (3) | 12 | 2 | 1 | - | 5 | 20 |
| AMP, TET, NAL | 3 (3) | 11 | - | 1 | - | 3 | 15 |
| AMP, TET, SXT, NAL | 4 (4) | 12 | - | - | - | 1 | 13 |
| AMP, TET, SXT, CHL | 4 (4) | 2 | - | - | - | - | 2 |
| AMP, TET, NAL, CIP | 4 (3) | 5 | - | - | - | 1 | 6 |
| AMP, TET, SXT, NAL, CIP | 5 (4) | - | - | 3 | - | 1 | 4 |
| AMP, TET, SXT, NAL, CHL | 5 (5) | 8 | 1 | 1 | - | 1 | 11 |
| AMP, TET, NAL, CIP, CXT | 5 (4) | 2 | - | - | - | - | 2 |
| AMP, TET, SXT, NAL, CIP, CHL | 6 (5) | 2 | - | - | - | - | 2 |
| AMP, TET, SXT, NAL, CHL, CXT | 6 (6) | 3 | 2 | - | - | - | 5 |
| AMP, TET, SXT, NAL, CIP, CHL, CXT | 7 (6) | 1 | - | 4 | - | - | 5 |
| AMP, TET, SXT, NAL, CAZ CTX, CRO | 7 (5) | 4 | 1 | - | - | 3 | 8 |
| AMP, TET, SXT, NAL, CIP CXT, CAZ, CTX | 8 (5) | 2 | 1 | 1 | 2 | 1 | 7 |
| AMP, TET, SXT, NAL, CIP, CHL, CAZ CTX, CRO, GEN, MER | 9 (6) | 6 | 2 | 3 | - | - | 11 |
| AMP, TET, SXT, NAL, CHL, CXT, CAZ CTX, CRO, GEN | 9 (6) | 1 | - | - | 1 | 1 | 3 |
| AMP, TET, SXT, NAL, CIP, CHL, CXT, CAZ CTX, CRO, GEN, MER | 10 (6) | 2 | - | - | - | - | 2 |
| Total non-MDR isolates N (%) | -- | 14 (16.1%) | 2 (18.2%) | 4 (22.2%) | 1 (25.0%) | 6 (26.1%) | 27 (18.9%) |
| Total MDR isolates N (%) | -- | 73 (83.9%) | 9 (81.8%) | 14 (77.8%) | 3 (75.0%) | 17 (73.9%) | 116 (81.1%) |
Key: AMP = ampicillin; TET = tetracycline; SXT = trimethoprim-sulfamethoxazole; NAL = nalidixic acid; CHL = chloramphenicol; CIP = ciprofloxacin; CAZ = ceftazidime; CTX = cefotaxime, CRO = ceftriaxone; CXT = cefoxitin; GEN = gentamicin; MER = meropenem; MDR = multidrug-resistant (against ≥3 antimicrobial classes)