Table 2.

Relative proportion of PCR-determined genotypes of ESBL-EC isolates from poultry industry-related samples (N = 93).

	Relative Proportion (%)
	Worker	Poultry	Chicken Meat	Environment
CTX-M-1 group
CTX-M-1 (n = 11)	0 (n = 0)	14.0 (n = 6)	11.8 (n = 4)	6.7 (n = 1)
CTX-M-15 (n = 7)	0 (n = 0)	2.3 (n = 1)	14.7 (n = 5)	6.7 (n = 1)
CTX-M-55 (n = 33)	0 (n = 0)	34.9 (n = 15)	29.4 (n = 10)	53.3 (n = 8)
CTX-M-61 (n = 1)	0 (n = 0)	0 (n = 0)	2.9 (n = 1)	0 (n = 0)
CTX-M-9 group
CTX-M-14 (n = 33)	100 (n = 1)	39.5 (n = 17)	35.3 (n = 12)	20 (n = 3)
CTX-M-27 (n = 3)	0 (n = 0)	2.3 (n = 1)	2.9 (n = 1)	6.7 (n = 1)
CTX-M-65 (n = 5)	0 (n = 0)	7 (n = 3)	2.9 (n = 1)	6.7 (n = 1)
Total	100 (n = 1)	100 (n = 43)	100 (n = 34)	100 (n = 15)

Abbreviations: ESBL-EC, extended-spectrum β-lactamase-producing Escherichia coli; n = number.