Potential Impact of Rapid Blood Culture Testing for Gram-Positive Bacteremia in Japan with the Verigene Gram-Positive Blood Culture Test
Table 4
Detection of Gram-positive bacteria and resistance genes in simulated blood cultures by BC-GP.
Organism
Total no. of strains
No. (%) of isolates
correctly identified
not detected
incorrectly identified
Staphylococcus
54
54 (100)
S. aureus
35
35 (100)
Methicillin-sensitive, mecA−
15
15 (100)
Methicillin-resistant, mecA+
20
20 (100)
Health-care associated
10
10 (100)
Community acquired
10
10 (100)
S. epidermidis
1
1 (100)
Methicillin-sensitive, mecA−
1
1 (100)
S. lugdunensis
8
8 (100)
Other CNS
10
10 (100)
S. hominis
2
2 (100)
S. haemolyticus
2
2 (100)
S. saprophyticus
2
2 (100)
S. capitis
1
1 (100)
S. cohnii
1
1 (100)
S. warneri
1
1 (100)
S. pseudintermedius
1
1 (100)
Streptococcus
87
77 (88)
4 (5)
6 (7)
S. pyogenes
9
8 (89)
1 (11)
S. agalactiae
8
8 (100)
S. dysgalactiae
8
8 (100)
S. anginosus group
10
8 (80)
2 (20)
S. anginosus
3
2 (66)
1 (34)
S. constellatus
4
3 (75)
1 (25)
S. intermedius
3
3 (100)
S. pneumoniae
22
20 (91)
2 (9)
Other streptococci
30
25 (86)
3 (10)
2 (7)
S. mitis
12
9 (75)
1 (8)
2 (17)
S. oralis
4
4 (100)
S. infantis
2
2 (100)
S. mutans
2
1 (50)
1 (50)
S. sobrinus
1
0 (0)
1 (100)
S. sanguinis
1
1 (100)
∖
S. parasanguinis
1
1 (100)
S. peroris
1
1 (100)
S. australis
1
1 (100)
S. tigurinus
1
1 (100)
S. cristatus
1
1 (100)
S. gordonii
1
1 (100)
S. gallolyticus
1
1 (100)
S. lutetiensis
1
1 (100)
Enterococcus
57
57 (100)
E. faecalis
32
32 (100)
Vancomycin-sensitive
18
18 (100)
Vancomycin-resistant, vanA+
4
4 (100)
Vancomycin-resistant, vanB+
10
10 (100)
E. faecium
25
25 (100)
Vancomycin-sensitive
5
5 (100)
Vancomycin-resistant, vanA+
10
10 (100)
Vancomycin-resistant, vanB+
10
10 (100)
Listeria spp.
5
5 (100)
Micrococcus spp.
5
5 (100)
Total
208
198 (95)
4 (2)
6 (3)
Not detected initially, but positive using 11-fold diluted blood culture sample. Streptococcus sp. belonging to the S. anginosus group is identified as S. anginosus group by BC-GP. Positive signal for Streptococcus, but no signal for S. anginosus group. Positive signal for Streptococcus, but no signal for S. pneumoniae. Misidentified as S. pneumoniae.
