Table 1.
Antimicrobial resistance profiles of C. coli isolated from pigs and chickens from 2010 to 2018 in Korea.
| Antimicrobials | % (No.) of Resistant Isolates | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pigs | Chickens | Total | |||||||||
| 2010–2012 | 2013–2015 | 2016–2018 | Subtotal | p-Value | 2010–2012 | 2013–2015 | 2016–2018 | Subtotal | p-Value | (n = 1218) | |
| (n = 268) | (n = 263) | (n = 112) | (n = 643) | (n = 196) | (n = 103) | (n = 276) | (n = 575) | ||||
| Azithromycin | 35.8 (96) | 42.2 (111) | 42.9 (48) | 39.7 (255) | 0.2763 | 16.3 (32) | 12.6 (13) | 16.7 (46) | 15.8 (91) | 0.9436 | 28.4 (346) |
| Ciprofloxacin | 91.4 (245) | 86.3 (227) | 88.4 (99) | 88.8 (571) | 0.6020 | 99 (194) | 98.1 (101) | 99.3 (274) | 98.8 (568) | 0.8456 | 93.5 (1139) |
| Clindamycin | 40.7 (109) | 46 (121) | 42.9 (48) | 43.2 (278) | 0.7289 | 16.8 (33) | 11.7 (12) | 17.8 (49) | 17.2 (99) | 0.9023 | 31 (377) |
| Erythromycin | 35.1 (94) | 42.2 (111) | 42 (47) | 39.2 (252) | 0.3491 | 15.8 (31) | 11.7 (12) | 16.3 (45) | 16.3 (94) | 0.9368 | 28.4 (346) |
| Florfenicol | 5.2 (14) | 10.3 (27) | 11.6 (13) | 8.4 (54) | 0.2102 | 0.5 (1) | 1.9 (2) | 2.5 (7) | 1.7 (10) | 0.1445 | 5.3 (64) |
| Gentamicin | 11.6 (31) | 14.4 (38) | 12.5 (14) | 12.9 (83) | 0.7961 | 13.3 (26) | 19.4 (20) | 28.6 (79) | 21.7 (125) | 0.0741 | 17.1 (208) |
| Nalidixic acid | 91.4 (245) | 85.9 (226) | 83.9 (94) | 87.9 (565) | 0.1675 | 98.5 (193) | 97.1 (100) | 99.3 (274) | 98.6 (567) | 0.7661 | 93 (1132) |
| Telithromycin | 46.6 (125) | 40.7 (107) | 33.9 (38) | 42 (270) | 0.0260 | 12.2 (24) | 12.6 (13) | 14.9 (41) | 13.6 (78) | 0.2457 | 28.6 (348) |
| Tetracycline | 77.6 (208) | 82.5 (217) | 70.5 (79) | 78.4 (504) | 0.5995 | 78.6 (154) | 89.3 (92) | 81.2 (224) | 80.9 (465) | 0.8503 | 79.6 (969) |
| MDR | 84.3 (226) | 85.8 (226) | 76.9 (86) | 83.8 (539) | 77.7 (151) | 85.4 (88) | 84.8 (234) | 82.3 (473) | 83.1 (1012) | ||
MDR, multidrug resistance.