TABLE II.

CLA-BSI Blood Culture Isolates 2005-2011, based on revised NHSN Definition^*

	All PHO	Non- BMT	BMT
Counts (n)	(130)	(60)	(70)
Number of concurrent isolates	%	%	%
One organism	72.7	67.4	76.8
Two organisms	22.2	20.9	23.2
Three organisms	5.1	11.6	-
Gram positive cocci	71.7	66.9	74.2
Staphylococcus	34.6	28.4	40.0
coagulase (-) **	29.2	21.7	35.7
aureus	5.4	6.7	4.3
Streptococcus	21.6	23.4	18.5
pneumoniae	0.8	-	1.4
mitis **	10.8	15	7.1
alpha-hemolytic NOS **	6.2	6.7	5.7
oralis **	1.5	-	2.9
sanguis **	1.5	1.7	1.4
salvarius **	0.8	-	1.4
Enterococcus	14.7	13.4	15.7
faecalis	6.2	6.7	5.7
faecium	8.5	6.7	10
Micrococcus **	0.8	1.7	-
Gram negative bacilli	22.5	28.4	16.9
Pseudomonas	6.2	3.3	8.5
aeruginosa	5.4	3.3	7.1
oryzihabitans	0.8	-	1.4
Klebsiella	5.4	8.3	2.8
oxytoca	3.1	5	1.4
pneumonia	2.3	3.3	1.4
Enterobacter	3.1	5	1.4
cloacae	2.3	3.3	1.4
species NOS	0.8	1.7	-
Escherichia coli	3.1	6.7	-
Stenotrophomonas maltophilia	0.8	1.7	-
Acinetobacter species NOS	0.8	1.7	-
Alcaligenes xylosoxidans	0.8	-	1.4
Leptotrichia buccalis	0.8	-	1.4
Proteus mirabilis	1.5	1.7	1.4
Fungal	3.1	5.1	1.4
Candida	3.1	5.1	1.4
krusei	1.5	1.7	1.4
parapsilosis	0.8	1.7	-
glabrata	0.8	1.7	-
Gram positive bacilli	3.2	-	5.6
Bacillus cereus **	0.8	-	1.4
Clostridium perfringens	0.8	-	1.4
Lactobacillus species NOS	0.8	-	1.4
Microbacterium	0.8	-	1.4

^*The revised NHSN definition required two positive blood cultures for organisms considered common skin contaminants;

^**Organisms considered to be common skin contaminants in the revised NHSN definition; NHSN = National Healthcare Safety Network; NOS = Not Otherwise Specified