Table 3.
Antimicrobial Disc (Code) | Resistance Patterns | |||||
---|---|---|---|---|---|---|
E. coli (n=102) | E. coli O157: H7 (n=27) | |||||
S (%) | I (%) | R (%) | S (%) | I (%) | R (%) | |
Ampicillin (AMP) | 9 (8.8) | 0 | 93 (91.2) | 2 (7.4) | 1 (3.7) | 24 (88.9) |
Amoxicillin -clavulanic acid (AMC) | 66 (64.7) | 3 (2.9) | 33 (32.4) | 17 (63.0) | 2 (7.4) | 8 (29.6) |
Cefotaxime (CTX) | 96 (94.1) | 3 (2.9) | 3 (2.9) | 23 (85.2) | 1 (3.7) | 2 (7.4) |
Ceftriaxone (CRO) | 97 (95.1) | 2(2.0) | 4 (3.9) | 24 (88.9) | 1 (3.7) | 2 (7.4) |
Ceftazidime (CTZ) | 94 (92.2) | 3 (2.9) | 5 (4.9) | 23 (85.2) | 2 (7.4) | 2 (7.4) |
Chloramphenicol (CHL) | 97 (95.1) | 0 | 5 (4.9) | 23 (85.2) | 1 (3.7) | 3 (11.1) |
Ciprofloxacin (CIP) | 98 (96.1) | 0 | 3 (2.9) | 26 (96.3) | 0 | 1 (3.7) |
Erythromycin (ERY) | 3 (2.9) | 0 | 99 (97.1) | 2 (7.4) | 0 | 25 (92.6) |
Gentamicin (GEN) | 96 (94.1) | 1(1.0) | 5 (4.9) | 25 (92.6) | 1 (3.7) | 1 (3.7) |
Kanamycin (KAN) | 97 (95.1) | 0 | 5 (4.9) | 24 (88.9) | 1 (3.7) | 2 (7.4) |
Streptomycin (STR) | 96 (94.1) | 1 (1.0) | 5 (4.9) | 25 (92.6) | 0 | 2 (7.4) |
Trimethoprim- sulfamethoxazole (SXT) | 63 (61.8) | 0 | 39 (38.2) | 16 (59.3) | 0 | 11 (40.7) |
Tetracycline (TET) | 64 (62.7) | 1 (1.0) | 37 (36.3) | 15 (55.6) | 0 | 12 (44.4) |
Abbreviations: S, sensitive; I, intermediate; R, resistance.