Wide dissemination of extended-spectrum β-lactamase-producing Escherichia coli in community residents in the Indochinese peninsula

Figures & data

Figure 1 Research sites.

Table 1 Prevalence of extended-spectrum β-lactamase-producing Enterobacteriaceae in residents of Indochinese countries

	Thailanda	Laos	Vietnam
Sampling period	November 2010	November 2012	June 2013
No of participants	417	57	198
Age, mean	47	47	31
Age, range	20–85	17–75	1–90
Sex, male (%)	38	18	52
Phenotype	69.3% (289)*	71.9% (41)**	51.0% (101)
CTX-M gene	65.7% (274)*	70.2% (40)**	47.0% (93)b
CTX-M genotype groups
M-1 group	38.7% (106)	47.5% (19)	33.0% (34)
M-2 group	0% (0)	0% (0)	1.0% (1)
M-8 group	0.7% (2)	5.0% (2)	1.9% (2)
M-9 group	60.6% (166)	47.5% (19)	64.1% (66)

Notes:

a Luvsansharav UO, Hirai I, Nakata A, et al. Prevalence of and risk factors associated with faecal carriage of CTX-M beta-lactamase-producing Enterobacteriaceae in rural Thai communities. J Antimicrob Chemother. 2012;67(7):1769–1774 by permission of Oxford University Press.⁹

b the number of CTX-M gene isolates was not matched with the total number of CTX-M due to the presence of dual CTX-M gene possession. The numbers in parentheses indicate the number of strains.

* P<0.0001, significantly different from the Vietnam group.

** P<0.01, significantly different from the Vietnam group.

Table 2 Phylogenetic groups of the CTX-M extended-spectrum β-lactamase-producing Escherichia coli isolates

Phylogenetic group	Thailanda		Laos		Vietnam
	No of isolates	%	No of isolates	%	No of isolates	%
A	114	48.7	20	50.0	39	38.6
B1	67	28.6	5	12.5	22	21.8
B2	16	6.8	5	12.5	14	13.9
D	37	15.8	10	25.0	26	25.7
Total	234	100	40	100	101	100

Notes:

a Luvsansharav UO, Hirai I, Nakata A, et al. Prevalence of and risk factors associated with faecal carriage of CTX-M beta-lactamase-producing Enterobacteriaceae in rural Thai communities. J Antimicrob Chemother. 2012;67(7):1769–1774 by permission of Oxford University Press.⁹

LuvsansharavUOHiraiINakataAPrevalence of and risk factors associated with faecal carriage of CTX-M beta-lactamase-producing Enterobacteriaceae in rural Thai communitiesJ Antimicrob Chemother20126771769177422514260

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