TABLE 1.

Clusters of E. faecium strains obtained at the 45% similarity level: sources of strains, identification method(s) used, and antibiotic resistance

Cluster	Isolate	Sourcea	Identification method(s)b	Antibiotic resistancec
I	SE ch 4c	Swedish chicken	phen + RAPD	TC
I	SE ch 17d	Swedish chicken	phen + RAPD	TC
I	DK ch 5a	Danish chicken	phen + RAPD	EM, VA
I	DK ch 6b	Danish chicken	phen + RAPD	EM, PV, VA
II	NCC 218d	The Netherlands, human, hosp	RAPD	EM
II	SE hum B42d	Sweden, human blood, hosp	phen + RAPD	PV
II	DK hum 5/3bd	Denmark, human feces, healthy	RAPD	EM
II	DK hum 27bd	Denmark, human feces, healthy	RAPD	NX
II	DK hum 24ad	Denmark, human feces, healthy	RAPD	EM, NX
II	CCUG 542Te	Type strain, human feces	phen + RAPD
II	SE hum B50d	Sweden, human feces, hosp	phen + RAPD	TC
II	G	Danish probiotic yoghurt	phen + RAPD
II	DK hum 19ad	Denmark, human feces, healthy	RAPD	NX, VA
III	SE hum B36d	Sweden, human urine, comm	phen + RAPD	AM, EM, NX, PV, TC
III	SE hum ET45d	Sweden, human urine, comm	phen + RAPD	AM, EM, NX, PV, TC
III	SE hum B49d	Sweden, human wound, comm	phen + RAPD	AM, EM, PV, TC
III	SE hum B60d	Sweden, human feces, hosp	phen + RAPD
III	SE hum ET33d	Sweden, human urine, hosp	phen + RAPD	AM, EM, PV
III	SE hum ET47d	Sweden, human urine, comm	phen + RAPD	AM, EM, PV, TC
III	SE hum multid	Sweden, human blood, hosp	phen + RAPD	AM, CL, EM, PV, PP, TC, TS, VA
IV	SE hum ET144d	Sweden, human urine, hosp	phen + RAPD	AM, EM, NX, PV, TC
IV	SE hum 19ad	Sweden, human normal flora	phen + RAPD
V	SE ch 14a	Swedish chicken	phen + RAPD	TC
V	SE ch 2a	Swedish chicken	phen + RAPD	NX, TC
VI	NCC 212d	Probiotic strain	RAPD	CL, EM, PV
VI	DK hum 30bd	Denmark, human feces, healthy	RAPD	EM
VI	MC74d	Probiotic strain	RAPD	EM
VI	SF68d	Probiotic strain	RAPD	EM
VI	DK hum 26/2ad	Denmark, human feces, healthy	RAPD	EM
VI	NCC 270d	Probiotic strain	RAPD	EM
VI	DK hum 23ad	Denmark, human feces, healthy	RAPD	EM, PV
VII	DK hum 12ad	Denmark, human feces, healthy	RAPD	EM
VII	DK hum 20/2bd	Denmark, human feces, healthy	RAPD	NX
VIII	DK hum 1ad	Denmark, human feces, healthy	RAPD	EM
VIII	DK hum 17ad	Denmark, human feces, healthy	RAPD	EM
IX	DK po 4d	Danish pork	phen + RAPD
IX	DK po 24a	Danish pork	phen + RAPD	EM
X	DK hum 22/2ad	Denmark, human feces, healthy	RAPD	CL, EM, TC
X	DK hum 11ad	Denmark, human feces, healthy	RAPD	NX
XI	DK hum 3bd	Denmark, human feces, healthy	RAPD	TC
XI	DK hum 8bd	Denmark, human feces, healthy	RAPD	NX
Straggler	DK hum 25ad	Denmark, human feces, healthy	RAPD	EM, PV, TC
Straggler	DK ch 6d	Danish chicken	phen + RAPD	EM, PV, VA
Straggler	DK ch 7c	Danish chicken	phen + RAPD	EM, VA
Straggler	DK po 5d	Danish pork	phen + RAPD
Straggler	SE po 1c	Swedish chicken	phen + RAPD
Straggler	DK po 24b	Danish pork	phen + RAPD
Straggler	DK hum 18bd	Denmark, human feces, healthy	RAPD

^ahosp, hospitalized patient; comm, community-based patient; healthy, healthy individual. 

^bIdentification procedures were performed by workers in our laboratory. phen, phenotypic identification; RAPD, randomly amplified polymorphic DNA identification. 

^cAM, ampicillin; CL, chloramphenicol; EM, erythromycin; NX, norfloxacin; PP, piperacillin; PV, penicillin V; TS, trimethoprim-sulfamethoxazole; TC, tetracycline; VA, vancomycin. 

^dReceived as E. faecium (phenotypically identified). 

^eIdentified as E. faecium by workers at the Culture Collection, University of Gothenburg, Gothenburg, Sweden.