TABLE 1.

Division of 46 GRE isolates from a single patient into 10 groups and subgroups by combination of identification to species level, PFGE subtype and structure, and location of VanA element

GRE isolate group	Species	PFGE typea	Date first isolated (mo/day/yr)	Date last isolated (mo/day/yr)	VanA elementb	No. of isolates in group	Subgroups	Hybridization with vanA probe	No. of isolates
1	E. faecium	i	9/28/95	11/23/95	H	13		Chromosomal band only	13
2	E. faecium	ii	9/28/95	10/19/95	H	11		Chromosomal band only	11
3	E. faecalis	iii	10/19/95	12/18/95	H	13	a	Chromosomal band only	8
							b	Plasmid of ca. 35 MDa and chromosomal band	1
							c	Plasmid of ca. 70 MDa and chromosomal band	3
4	E. faecium	iv	11/3/95	12/12/95	H	3		Chromosomal band only	3
5	E. faecalis	iii	11/21/95	11/23/95	U	2	a	Plasmid of ca. 35 MDa and chromosomal band	1
							b	Plasmid of ca. 70 MDa and chromosomal band	1
6	E. faecium	v	12/8/95	12/18/95	H	3		Chromosomal band only	3
7	E. faecium	vi	12/18/95		W	1		Plasmid of ca. 35 MDa and chromosomal band	1

^aPFGE profiles were analyzed according to the criteria described by Tenover et al. (8). Profiles of types i and vi differed by four to six bands, suggesting that they were possibly related; the same was true for types ii and iv. All other types differed by more than six bands. 

^bGroups are in accordance with previous designations (12).