Table 3.
Antimicrobial resistance patterns of S. enterica Infantis by isolation methods
| No. of antimicrobials | Antimicrobial resistance patterns a | Broilers | Total (%) | ||||
| FEb | DSECc | ||||||
| 0 | Susceptible | 2 | (5.3) | 0 | (0) | 2 | (2.9) |
| 1 | DSM | 2 | (5.3) | 0 | (0) | 2 | (2.9) |
| OTC | 2 | (5.3) | 0 | (0) | 2 | (2.9) | |
| 2 | DSM, OTC | 9 | (23.7) | 8 | (25.8) | 17 | (24.6) |
| 3 | DSM, KM, OTC | 7 | (18.4) | 2 | (6.5) | 9 | (13.0) |
| DSM, OTC, TMP | 4 | (10.5) | 2 | (6.5) | 6 | (8.7) | |
| KM, OTC, TMP | 1 | (2.6) | 0 | (0) | 1 | (1.4) | |
| 4 | DSM, KM, OTC, TMP | 11 | (28.9) | 19 | (61.3) | 30 | (43.5) |
| Total | 38 | (100) | 31 | (100) | 69 | (100) | |
a DSM: dihydrostreptomycin, KM: kanamycin, OTC: oxytetracycline, TMP: trimethoprime
b FE: First enrichment culture
c DSEC: Delayed secondary enrichment culture