Table 5 Distribution of antibiotic resistance genes in STEC serogroups isolated from fermented dairy products in Iran
STEC serotypes | Antibiotic resistance genes | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
aadA1 | tetA | tetB | dfrA1 | qnr | aac( 3)-IV | Sul1 | blaSHV | CITM | ereA | cat1 | cmlA | |
O157 (13) | 4 | 9 | 11 | 1 | 1 | 5 | 2 | 6 | 6 | 4 | 3 | 3 |
O145 (3) | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 1 |
O128 (4) | 1 | 4 | 4 | - | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
O121 (2) | - | 2 | 2 | - | - | - | 1 | 2 | - | - | 1 | 1 |
O113 (3) | - | 2 | 1 | - | - | - | - | - | - | - | - | - |
O111 (3) | - | 1 | 1 | - | - | - | - | - | - | - | - | - |
O103 (3) | - | 1 | 1 | - | - | - | - | - | - | - | - | - |
O91 (2) | - | 1 | - | - | - | - | - | - | - | - | - | - |
O45 (2) | - | 2 | 1 | - | - | - | - | - | 1 | - | - | - |
O26 (6) | 2 | 5 | 6 | 1 | 1 | 2 | 1 | 3 | 2 | 1 | 1 | 1 |
Non detected (9) | 6 | 8 | 6 | 2 | 2 | 6 | 3 | 4 | 6 | 2 | 4 | 5 |
Total (50) | 15 (30) | 38 (76) | 35 (70) | 5 (10) | 6 (12) | 16 (32) | 9 (18) | 19 (38) | 18 (36) | 9 (18) | 11 (22) | 12 (24) |