Table 4 Presence of mutations in gyrA and parC genes of ciprofloxacin-resistant Escherichia coli isolated from broilers in Vietnam
Amino acid changes in gyrA | Amino acid changes in parC | No. of isolates carrying mutation(s) (% and 95CI) | No. of farms of origin | ||
|---|---|---|---|---|---|
Ser83 | Asp87 | Ser80 | Glu84 | ||
Leu | Asn | Ile | – | 28 (56.0; 43.8 – 68.2) | 5 |
Leu | Asn | Ile | Gly | 4 (8.0; 0.0–17.3) | 3 |
Leu | – | Ile | – | 3 (6.0; 0.0–13.0) | 3 |
Leu | Gly | Ile | – | 3 (6.0; 0.0–16.4) | 2 |
Leu | – | – | – | 2 (4.0; 0.0–13.9) | 1 |
Leu | Tyr | Ile | – | 2 (4.0; 0.0–11.2) | 2 |
Leu | His | Ile | – | 1 (2.0; 0.0–6.9) | 1 |
Leu | Arg | – | – | 1 (2.0; 0.0–7.4) | 1 |
Leu | Asn | – | – | 1 (2.0; 0.0–8.6) | 1 |
– | Asn |  | – | 1 (2.0; 0.0–7.4) | 1 |
– | – | Ile | – | 1 (2.0; 0.0–6.9) | 1 |
– | – | – | – | 3 (6.0; 0.0–15.5) | 3 |
Total of tested isolates and farms | 50 | 5 | |||