Potential Impact of Rapid Blood Culture Testing for Gram-Positive Bacteremia in Japan with the Verigene Gram-Positive Blood Culture Test
Table 1
Performance of the BC-GP assay at Toranomon Hospital.
Organism
BC-GP (total)
BC-GP (monomicrobial cultures)
Number of organisms
Number (%) of isolates
Number of organisms
Number (%) of isolates
Correctly identified
Not detected
Incorrectly identified
Correctly identified
Not detected
Incorrectly identified
Staphylococcus
78
73 (94)
4 (5)
1 (1)
71
70 (99)
1 (2)
S. aureus
16
16 (100)
16
16 (100)
Methicillin-sensitive
9
9 (100)
9
9 (100)
Methicillin-resistant
7
7 (100)
7
7 (100)
S. epidermidis
37
34 (92)
2 (5)
1 (3)
34
34 (100)
Methicillin-sensitive
2
1 (50)
1 (50)
1
1 (100)
Methicillin-resistant
35
33 (94)
1 (3)
1 (3)
33
33 (100)
S. lugdunensis
1
1 (100)
1
1 (100)
Other CNS
24
22 (92)
2 (8)
20
19 (95)
1 (6)
S. caprae
9
8 (89)
1 (11)
7
6 (67)
1 (33)
S. hominis
8
8 (100)
7
7 (100)
S. haemolyticus
4
3 (75)
1 (25)
3
3 (100)
S. capitis
1
1 (100)
1
1 (100)
S. schleiferi
1
1 (100)
1
1 (100)
S. simulans
1
1 (100)
1
1 (100)
Streptococcus
9
7 (78)
1 (11)
1 (11)
6
5 (83)
1 (27)
S. agalactiae
1
1 (100)
1
1 (100)
S. anginosus group
1
1 (100)
S. constellatus
1
1 (100)
Other streptococci
7
5 (72)
1 (14)
1 (14)
5
4 (80)
S. mitis
2
1 (50)
1 (50)
2
1 (50)
1 (50)
S. infantis
2
1 (50)
1 (50)
1
1 (100)
S. tigurinus
2
2 (100)
1
1 (100)
S. oralis
1
1 (100)
1
1 (100)
Enterococcus
17
16 (94)
1 (6)
16
16 (100)
E. faecalis
2
1 (50)
1 (50)
1
1 (100)
Vancomycin-sensitive
2
1 (50)
1 (50)
1
1 (100)
E. faecium
15
15 (100)
15
15 (100)
Vancomycin-sensitive
15
15 (100)
15
15 (100)
Total
104
96 (92)
6 (6)
2 (2)
93
91 (98)
1 (1)
1 (1)
Other nontarget Gram-positives
15
10
Bacillus
3
2
B. subtilis
2
1
B. cereus
1
1
Corynebacterium
12
8
C. striatum
9
5
C. jeikeium
3
3
Total isolates
119
103
Polymicrobial culture of methicillin-sensitive and methicillin-resistant S. epidermidis. Polymicrobial culture with E. faecium. Correctly identified as Staphylococcus, but not as S. epidermidis, S. aureus, or S. lugdunensis. Polymicrobial culture with S. tigurinus. “S. anginosus group” identified by the BC-GP assay is defined as “correctly identified” for each species. Identified as S. pneumoniae. Polymicrobial culture with methicillin-resistant S. epidermidis. Polymicrobial culture with Escherichia coli.
