TABLE 3.

qnr genes in commensal enterobacteria from healthy children in Peru and Bolivia

Isolatea	Origin	qnr gene	MIC (μg/ml)b
			NAL	CIP	LEV
E. coli Y1	Yurimaguas, Peru	qnrB19	32	0.5	1
E. coli M1	Moyobamba, Peru	qnrB19	16	0.25	0.5
E. coli C1	Camiri, Bolivia	qnrB19	32	0.5	1
E. coli V1	Villa Montes, Bolivia	qnrB19	32	0.25	1
K. pneumoniae Y1	Yurimaguas, Peru	qnrB19	64	2	1
K. pneumoniae M1	Moyobamba, Peru	qnrB19	32	2	2
K. pneumoniae V1	Villa Montes, Bolivia	qnrB2	32	1	1
E. hermannii C1	Camiri, Bolivia	qnrB19	32	0.25	0.25
E. cloacae V1	Villa Montes, Bolivia	qnrB2	32	2	2
K. oxytoca M1	Moyobamba, Peru	qnrB19	16	0.25	0.5
C. freundii V1	Villa Montes, Bolivia	qnrB10	16	0.25	0.5
E. coli Y2	Yurimaguas, Peru	qnrS1	16	0.5	0.5
E. coli Y3	Yurimaguas, Peru	qnrS1	16	0.5	0.5
E. coli M2	Moyobamba, Peru	qnrS1	16	0.5	0.5
E. coli M3	Moyobamba, Peru	qnrS1	32	0.5	2
K. pneumoniae Y2	Yurimaguas, Peru	qnrS1	32	1	2
K. pneumoniae M2	Moyobamba, Peru	qnrS1	32	4	1
K. pneumoniae C2	Camiri, Bolivia	qnrS1	32	2	2
K. pneumoniae V2	Villa Montes, Bolivia	qnrS1	16	1	2
K. oxytoca M2	Moyobamba, Peru	qnrS1	>128	4	4

^aThe 11 qnrB-harboring isolates were selected as follows: four E. coli isolates, one from each study area; three K. pneumoniae isolates, each from different study areas (no qnrB-harboring K. pneumoniae isolate detected in Camiri, Bolivia); and four isolates representative of species other than E. coli or K. pneumoniae. The nine qnrS-harboring isolates were selected as follows: all of the qnrS-harboring E. coli isolates (n = 4); four K. pneumoniae isolates, one from each study area; and one of the two qnrS-harboring K. oxytoca isolates.

^bNAL, nalidixic acid; CIP, ciprofloxacin; LEV, levofloxacin.