Table 2.
Prevalence of gentamicin and kanamycin resistance and the associated resistance genes.
| Year | Location of isolates | Host | No. of gentamicin and kanamycin-resistant isolates/total no. of isolates (%) | No. of aadE-sat4-aphA-3-positive isolates/total no. of isolates (%) | No. of aph(2")-If-positive isolates/total no. of isolates (%) | No. of aac(6')-Ie/aph(2")-Ia-positive isolates/total no. of isolates (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| C. jejuni | C. coli | C.jejuni | C. coli | C. jejuni | C. coli | C. jejuni | C. coli | |||
| 2017 | YZ | chicken | 3/10(30.0) | 4/18(22.2) | 0/10(0) | 1/18(5.6) | 5/10(50.0) | 14/18(77.8) | 2/10(20.0) | 14/18(77.8) |
| HA | chicken | 3/12(25.0) | 4/12(33.3) | 1/12(8.3) | 4/12(33.3) | 5/12(41.7) | 8/12(66.7) | 0/12(0) | 4/12(33.3) | |
| SQ | chicken | 3/10(30.0) | 2/4(50.0) | 0/10(0) | 2/4(50.0) | 6/10(60.0) | 4/4(100.0) | 1/10(10.0) | 4/4(100.0) | |
| YC | chicken | 1/6(16.7) | 3/3(100.0) | 0/6(0) | 0/3(0) | 1/6(16.7) | 3/3(100.0) | 0/6(0) | 2/3(66.7) | |
| XZ | chicken | 2/6(33.3) | 1/3(33.3) | 0/6(0) | 0/3(0) | 3/6(50.0) | 2/3(66.7) | 0/6(0) | 1/3(33.3) | |
| CZ | chicken | 1/5(20.0) | 1/1(100.0) | 0/5(0) | 0/1(0) | 1/5(20.0) | 1/1(100.0) | 0/5(0) | 1/1(100.0) | |
| NT | chicken | 0/2(0) | 0/0(0) | 0/2(0) | 0/0(0) | 0/2(0) | 0/0(0) | 0/2(0) | 0/0(0) | |
| Total | 13/51(25.5) | 15/41(36.6) | 1/51(2.0) | 7/41(17.1) | 21/51(41.2) | 32/41(78.1) | 3/51(5.9) | 26/41(63.4) | ||
| 28/92 (30.4) | 8/92 (8.7) | 52/92 (57.6) | 29/92 (31.5) | |||||||
| 2018 | YZ | chicken | 4/19(21.1) | 5/10(50.0) | 0/19(0) | 0/10(0) | 17/19(89.5) | 10/10(100.0) | 12/19(63.2) | 6/10(60.0) |
| HA | chicken | 1/1(100.0) | 0/0(0) | 0/1(0) | 0/0(0) | 1/1(100.0) | 0/0(0) | 0/1(0) | 0/0(0) | |
| SQ | chicken | 2/5(40.0) | 2/7(28.6) | 1/5(20.0) | 1/7(14.3) | 5/5(100.0) | 2/7(28.6) | 5/5(100.0) | 2/7(28.6) | |
| YC | chicken | 1/11(9.1) | 2/3(66.7) | 0/11(0) | 1/3(33.3) | 7/11(63.6) | 1/3(33.3) | 3/11(27.3) | 2/3(66.7) | |
| swine | 1/1(100.0) | 11/22(50.0) | 0/1(0) | 11/22(50.0) | 1/1(100.0) | 11/22(50.0) | 1/1(100.0) | 10/22(45.5) | ||
| CZ | chicken | 5/5(100.0) | 2/4(50.0) | 1/5(20.0) | 2/4(50.0) | 5/5(100.0) | 3/4(75.0) | 2/5(40.0) | 2/4(50.0) | |
| NT | chicken | 2/2(100.0) | 1/3(33.3) | 2/2(100.0) | 0/3(0) | 2/2(100.0) | 3/3(100.0) | 2/2(100.0) | 2/3(66.7) | |
| Total | 16/44(36.4) | 23/49(46.9) | 4/44(9.1) | 15/49(30.6) | 38/44(86.4) | 30/49(61.2) | 14/44(31.8) | 24/49(49.0) | ||
| 39/93 (41.9) | 19/93 (20.4) | 68/93 (73.1) | 38/93 (40.9) | |||||||
| Total | 29/95(30.5) | 38/90(42.2) | 5/95(5.3) | 22/90(24.4) | 59/95(62.1) | 62/90(68.9) | 17/95(17.9) | 50/90(55.6) | ||
| 67/185(36.2) | 27/185(14.6) | 121/185(65.4) | 67/185(36.2) | |||||||