TABLE 3.

Comparison of 17 pairs of isolates from blood or central catheter and the corresponding isolates from peripheral anatomical sites collected at the same time^a

Patient	Isolate origin	Length (bp) determined by PCR analysis
		CDC3 marker		EF3 marker		HIS3 marker
		Allele 1b	Allele 2	Allele 1	Allele 2	Allele 1	Allele 2
Patient 1	Blood culture	125	125	136	136	150	150
	Surgical wound	125	125	136	136	150	150
Patient 2	Central catheter	117	117	126	126	162	162
	Oral mucosa	117	117	126	126	162	162
Patient 3	Blood culture	117	117	131	131	162	182
	Urine	117	117	131	131	162	182
Patient 4	Blood culture	125	129	131	139	186	194
	Oral mucosa	125	129	131	139	186	194
Patient 5	Blood culture	117	125	131	131	166	186
	Stools	117	125	131	131	166	186
Patient 6	Central catheter	117	125	126	135	158	158
	Tracheal aspirate	117	125	126	135	158	158
Patient 7	Central catheter	117	129	136	146	154	170
	Urine	117	125	131	131	190	190
Patient 8	Central catheter	113	117	130	136	162	162
	Oral mucosa	113	117	130	136	162	162
Patient 9	Blood culture	117	125	126	135	162	210
	Urine	117	125	126	135	162	210
Patient 10	Central catheter	117	125	126	135	210	210
	Rectal swab	117	125	126	135	210	210
Patient 11	Central catheter	129	129	136	141	150	166
	Tracheal aspirate	129	129	136	141	150	166
Patient 12	Central catheter	117	125	126	135	162	194
	Oral mucosa	117	125	126	135	162	194
Patient 13	Blood culture	125	125	131	139	186	186
	Stools	125	125	131	139	186	186
Patient 14	Blood culture	117	125	126	135	162	214
	Urine	117	125	126	135	162	214
Patient 15	Blood culture	121	121	130	144	154	166
	Stools	121	121	130	144	154	166
Patient 16	Central catheter	117	125	131	131	162	186
	Tracheal aspirate	117	125	131	131	162	186
Patient 17	Central catheter	117	125	126	135	162	162
	Skin	117	129	136	146	154	154

^aAll but patients 7 and 17 had identical genotypes. The genotype of the urine isolate of patient 7 is a new genotype compared with those in Table 2. 

^bThe terms allele 1 and allele 2 indicate two different alleles for a given locus.