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Table 4 Presence of mutations in gyrA and parC genes of ciprofloxacin-resistant Escherichia coli isolated from broilers in Vietnam

From: Pathogenic potential and the role of clones and plasmids in beta-lactamase-producing E. coli from chicken faeces 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
  1. Ser serine, Leu leucine, Tyr tyrosine, Asp aspartic acid, Asn asparagine, Ile isoleucine, Arg arginine, Glu glutamic acid, Lys lysine