TABLE 1.

Details of patient from whom imipenem-resistant E. coli was isolated^a

Patient	Isolate	Infection site	LOS prior to IpmrE. coli	LOS	Antibiotic treatment		Infection/colonization	Outcome
					1 mo prior to E. coli isolation	After E. coli isolation
1	157	Urine	10 d	14 d	FQ	No treatment	Colonization	Recovery
2	329	Blood	1 db	3 d	No treatment	Empiric i.v. CRO	Infection	Death
3	339	Subphrenic abscess	30 d	4 m	BS-CEPH, FQ, MTA, VAN, followed with 14 d IPM until 2 wks before isolation	TZP, AMK	Infection	Recovery
4	360	Urine	2 db	18 d	CXMc	VAN, AMK, MTA	Colonization	Recovery

^aLOS, length of hospital stay in days (d) or months (m); i.v., intravenous; Ab, antibiotic; BS-CEPH, broad-spectrum cephalosporins; FQ, fluoroquinone; MTA, metronidazole; IPM, imipenem; TZP, piperacillin-tazobactam; AMK, amikacin; CXM, cefuroxime.

^bAdmitted from two different chronic care facilities.

^cTreated with cefuroxime (CXM) for a urinary tract infection that occurred during hospitalization 1.5 months earlier.