Table 3.
Distribution of relative frequencies of isolates exhibiting resistance to various antimicrobials. The categories of antimicrobials included in this study are penicillins, cephalosporins, aminoglycosides, quinolones, phenicols, folate pathway inhibitors/sulfonamides, and carbapenems. An isolate was considered multidrug-resistant if it showed resistance to at least one antimicrobial agent each among three or more antimicrobial categories (n = 63).
| Number of Antimicrobial Classes | All Isolates | Impala | Buffalo | Ostrich | Cattle | Pig | Goat | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
E. coli spp. (n = 48) n (%) |
Shigella spp. (n = 15) n (%) |
E. coli spp. (n = 11) n (%) |
Shigella spp. (n = 3) n (%) |
E. coli spp. (n = 6) n (%) |
Shigella spp. (n = 1) n (%) |
E. coli spp. (n = 5) n (%) |
Shigella spp. (n = 1) n (%) |
E. coli spp. (n = 13) n (%) |
Shigella spp. (n = 3) n (%) |
E. coli spp. (n = 10) n (%) |
Shigella spp. (n = 4) n (%) |
E. coli spp. (n = 3) n (%) |
Shigella spp. (n = 3) n (%) |
|
| 1 | 4 (8.4) | - | 2 (18.2) | - | - | - | - | - | - | - | 2 (20) | - | - | - |
| 2 | 10 (20.9) | 1 (6.7) | 1 (9.1) | - | - | - | 2 (40) | - | 6 (46.2) | - | 1 (10) | - | - | 1 (33.3) |
| 3 | 8 (16.7) | 1 (6.7) | 3 (27.3) | - | - | - | 1 (20) | 1 (100) | 2 (15.4) | - | 1 (10) | - | 1 (33.3) | - |
| 4 | 1 (2.1) | 1 (6.7) | - | - | - | - | - | - | - | - | - | 1 (25) | 1 (33.3) | - |
| 5 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| 7 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |