Predictors for vancomycin resistant Enterococcus faecium transforming from colonization to infection: a case control study

Table 2 Distributions of sequence types and pulsotypes among colonization isolates of cases and controls and subsequent infection isolates of cases

	Case		Control
	Colonization isolates (n = 97)	Subsequent infection isolates (n = 97)	Colonization isolates (n = 162)^a
Sequence type (ST), N (%)
ST17	33 (34.0)	39 (40.2)	68 (42.0)
ST18	4 (4.1)	3 (3.1)	11 (6.8)
ST78	16 (16.5)	19 (19.6)	30 (18.5)
ST341	17 (17.5)	15 (15.5)	21 (13.0)
ST414	13 (13.4)	12 (12.4)	11 (6.8)
Others^b	14 (14.5)	9 (9.3)	21 (13.0)
Pulsotype, N (%)
1	9 (9.3)	7 (7.2)	NA
16	9 (9.3)	6 (6.2)	NA
6	6 (6.2)	7 (7.2)	NA
28	6 (6.2)	6 (6.2)	NA
23	4 (4.2)	6 (6.2)	NA
Others^c	63 (64.8)	65 (67.0)	NA

Abbreviation: NA not applicable
^aOnly 162 colonization isolates in control group were available
^bColonization isolates in case group: ST64, 1 (1.0%); ST80, 1 (1.0%); ST203, 4 (4.1%); ST252, 3 (3.1%); ST1022, 1 (1.0%); ST1023, 1 (1.0%); ST1039, 1 (1.0%); ST1050, 2 (2.1%); Infection isolates in case group: ST64, 2 (2.1%); ST203, 2 (2.1%); ST233, 1 (1.0%); ST262, 2(2.1%); ST927, 1 (1.0%); ST1022, 1 (1.0%); Colonization isolates in control group: ST64, 5 (3.1%); ST80, 1 (0.6%); ST125, 1 (0.6%); ST203, 2 (1.2%); ST233, 3 (1.9%); ST252, 3 (1.9%); ST262, 4 (2.5%); ST267, 1 (0.6%); ST767, 1 (0.6%)
^cThere were 45 and 44 different pulsotypes among colonization and infections isolates in cases, respectively

ISSN: 2047-2994