TABLE 1 

Antimicrobial resistance profiles of 49 ST131-H22 Escherichia coli isolates from retail meats and human clinical specimens in relation to isolate source and ColV plasmid status

AntimicrobialNo. (%) resistant in:Logistic regression [OR (95% CI)]
MeatClinical specimenUnivariateMultivariate, isolate source
and ColV status
ColV+
(n = 21)
ColV
(n = 4)
ColV+
(n = 6)
ColV
(n = 18)
Meat sourceColV+
Ampicillin17 (81)3 (75)2 (33)7 (39)6.7 (2.0, 26.1)2.9 (0.9, 9.6)NAa
Ampicillin-sulbactam13 (62)3 (75)2 (33)6 (33)3.6 (1.1, 12.1)1.8 (0.6, 5.8)NA
Cefazolin17 (81)3 (75)1 (17)4 (22)15.2 (4.1, 68.2)4.3 (1.3, 15.0)Meat: 15.6 (3.2, 118.3);
ColV+: 1.0 (0.1, 4.9)
Cefoxitin4 (19)0 (0)1 (17)2 (11)1.3 (0.3, 7.5)2.3 (0.4, 17.1)NA
Ceftriaxone4 (19)1 (25)1 (17)0 (0)5.7 (0.8, 115.1)4.8 (0.7, 95.5)NA
Ciprofloxacin0 (0)0 (0)0 (0)1 (6)NANANA
Gentamicin8 (38)0 (0)1 (17)1 (6)5.2 (1.1, 37.4)10.5 (1.7, 203.3)Meat source: 2.1 (0.3, 17.9);
ColV+: 7.0 (0.8, 153.7)
Trimethoprim-sulfamethoxazole0 (0)0 (0)1 (17)0 (0)NANANA
Tetracycline11 (52)3 (75)3 (50)0 (0)8.9 (2.3, 45.0)6.8 (1.8, 34.1)Meat source: 5.2 (1.1, 30.9);
ColV+: 2.9 (0.6, 17.3)
≥2 antimicrobial classesb19 (91)3 (75)3 (50)7 (39)10.3 (2.7, 52.4)5.3 (1.5, 20.6)Meat source: 7.1 (1.5, 44.2);
ColV+: 2.0 (0.4, 9.4)
≥3 antimicrobial classesc17 (81)3 (75)2 (33)3 (17)15.2 (4.1, 68.2)6.3 (1.9, 23.7)Meat source: 10.7 (2.4, 60.4);
ColV+: 2.0 (0.4, 9.4)
  • a NA, not applicable.

  • b Resistance to 2 or more antimicrobial classes.

  • c Resistance to 3 or more antimicrobial classes.