Table 3.
Isolates detected by SeptiFast plus blood culture or by only one testa
| Species group and species | Total no. of positive blood samples (% of all positive blood samples) | No. of samples |
Concordance (%) | No. of samples with: |
|||
|---|---|---|---|---|---|---|---|
| SeptiFast positive/blood culture positive | SeptiFast positive/blood culture negative | SeptiFast negative/blood culture positive | SeptiFast contaminants | Blood culture contaminants | |||
| Gram-positive bacteria (128 pathogens and 108 contaminants) | |||||||
| Bacillus spp.b | 0 | 0 | 0 | 0 | 0 | 2 | |
| Corynebacterium spp.b | 0 | 0 | 0 | 0 | 0 | 2 | |
| Clostridium spp.b | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Enterococcus faecalis | 8 (3.0) | 7 | 0 | 1 | 87.5 | 1 | 2 |
| Enterococcus faecium | 4 (1.5) | 1 | 2 | 1 | 25.0 | 1 | 1 |
| Micrococcus spp.b | 0 | 0 | 0 | 0 | 0 | 1 | |
| Staphylococcus aureus | 31 (11.6) | 23 | 8 | 0 | 74.2 | 5 | 3 |
| CoNS | 79 (29.6) | 48 | 23 | 8 | 60.8 | 6 | 76 |
| Streptococcus pneumoniae | 2 (0.7) | 1 | 0 | 1 | 50.0 | 1 | 0 |
| Streptococci other than S. pneumoniae | 3 (1.1) | 1 | 1 | 1 | 33.3 | 1 | 6 |
| Gram-negative bacteria (107 pathogens and 35 contaminants) | |||||||
| Abiotrophia defectiveb | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Acinetobacter baumannii | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Citrobacter spp.b | 1 (0.4) | 0 | 0 | 1 | 0 | 2 | |
| Enterobacter aerogenes/E. cloacae | 12 (4.5) | 7 | 5 | 0 | 58.3 | 3 | 3 |
| Escherichia coli | 6 (2.2) | 5 | 1 | 0 | 83.3 | 3 | 5 |
| Klebsiella pneumoniae/K. oxytoca | 27 (10.1) | 12 | 14 | 1 | 44.4 | 6 | 1 |
| Burkholderia cepaciab | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Proteus mirabilis | 2 (0.7) | 1 | 1 | 0 | 50.0 | 0 | 0 |
| Pseudomonas aeruginosa | 44 (16.5) | 18 | 24 | 2 | 41.0 | 6 | 0 |
| Pseudomonas oryzihabitansb | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Salmonella spp.b | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Serratia marcescens | 7 (2.6) | 4 | 2 | 1 | 57.1 | 3 | 0 |
| Stenotrophomonas maltophilia | 4 (1.5) | 2 | 2 | 0 | 50.0 | 0 | 1 |
| Fungi (32 pathogens and 4 contaminants) | |||||||
| Candida albicans | 12 (4.5) | 4 | 6 | 2 | 33.3 | 1 | 1 |
| Candida famatab | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
| Candida krusei | 4 (1.5) | 2 | 1 | 1 | 50.0 | 0 | 0 |
| Candida parapsilosis | 13 (4.9) | 6 | 7 | 0 | 46.2 | 0 | 2 |
| Candida tropicalis | 1 (0.4) | 1 | 0 | 0 | 100 | 0 | 0 |
| Geotrichum capitatumb | 1 (0.4) | 0 | 0 | 1 | 0 | 0 | |
a
The total number of isolates tested was 414, which included 267 pathogens and 147 contaminants.
b
Microorganisms not in SML.