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Table 4 The associations between virulence genes and resistance phenotypes among Escherichia coli in phylogenetic group A (n = 232)

From: Antibiotic resistance, serogroups, virulence genes, and phylogenetic groups of Escherichia coli isolated from yaks with diarrhea in Qinghai Plateau, China

Virulence gene (n) Associations of gene (OR, 95% confidence interval)*,a
No. AMP No. TET No. GEN No. CHP No. CEF No. SXT No. STR No. CIP
sfa (223) 214 195 186 180 157 129 0.07 (0.0–1.2) 123 0.06 (0.0–0.1) 90 0.03 (0.0–0.6)
eaeA (174) 165 161 4.3 (1.9–9.8) 144 137 135 3.01 (1.6–5.6) 120 4.9 (2.6–9.4) 101 86 3.4 (1.7–6.7)
cnf1 (122) 122 22.9 (1.3–398.8) 113 2.6 (1.1–6.1) 110 2.7 (1.3–5.7) 79 0.008 (0.0–0.1) 91 76 84 2.8 (1.7–4.9) 53
etrA (69) 60 0.02 (0.0–0.3) 65 55 43 0.2 (0.1–0.4) 56 2.1 (1.04–4.1) 31 0.4 (0.2–0.7) 39 39 2.2(1.2–3.9)
papC (61) 52 0.02 (0.0–0.3) 52 42 0.3 (0.1–0.5) 44 0.3 (0.1-0.6) 40 37 42 2.0 (1.1–3.7) 16 0.4 (0.2–0.7)
hlyA (39) 30 0.008 (0.0–0.1) 29 0.3 (0.1–0.7) 27 0.3 (0.1–0.7) 21 0.2 (0.08–0.4) 27 12 0.2 (0.1-0.5) 22 18
aer (36) 36 26 0.3 (0.1–0.6) 24 0.3 (0.1–0.6) 14 0.08 (0.03–0.2) 22 33 9.5 (2.8-32.1) 26 2.2 (1.01–4.8) 11
faeG (9) 09 07 02 0.04 (0.0–0.2) 06 06 08 07 02
rfc/sepA (2) 02 02 02 02 02 02 02 02
  1. –, indicates no significant associations (P ≥ 0.05); AMP, ampicillin; TET, tetracycline; GEN, gentamicin; CHP, chloramphenicol; CEF, ceftriaxone; SXT, trimethoprim/sulfamethoxazole; STR, streptomycin; CIP, ciprofloxacin
  2. * Only antibiotic-resistant phenotypes with a significant association (P < 0.05) with the virulence genes in phylogenetic group A are shown
  3. aOdds ratio (OR) for significant associations between genes (95% confidence interval in parenthesis)