Dissemination of Extended-Spectrum β-Lactamase- and AmpC β-Lactamase-Producing Escherichia coli within the Food Distribution System of Ho Chi Minh City, Vietnam

Table 1

Prevalence of ESBL/AmpC-E. coli in food obtained from slaughterhouses or a wholesale market and supermarkets (2012 October–2014 March).

Food	Place	Number of samples	ESBL/AmpC-E. coli
			Positive	value	OR, CI
Chicken		82	76 (92.7%)
	Slaughterhouse	40	40 (100%)		OR = 14.42
	Supermarket	42	36 (85.7%)		CI (0.78–265.07)
Pork		92	32 (34.8%)
	Slaughterhouse	50	11 (22.0%)		OR = 0.28
	Supermarket	42	21 (50.0%)		CI (0.11–0.70)
Beef		74	18 (34.3%)
	Slaughterhouse	30	0 (0%)		OR = 0.02
	Supermarket	44	18 (40.9%)		CI (0.00–0.41)
Fish		82	24 (29.3%)
	Wholesale market	40	13 (32.5%)		OR = 1.36
	Supermarket	42	11 (26.2%)		CI (0.52–3.52)
Total		330	150 (45.5%)

Fisher’s exact test.
Odds ratio.
95% confidence interval.