Table 1 Anaerobic blood culture broth isolates, set assignment, and results of Gram identification
Gram stain | Microorganism | Isolates (n = 128) | Gram discrimination (n = 42) | ||
|---|---|---|---|---|---|
Training set (n = 86) | Validation set (n = 42) | Identified (n = 35) | Misidentified (n = 7) | ||
Positive | Enterococcus faecium | 7 | 3 | 2 | 1 |
Listeria monocytogenes | 1 | – | – | – | |
Propioninbacterium acnes | 6 | 1 | 1 | – | |
Streptococcal sp. | |||||
Streptococcus canis | 1 | – | – | – | |
S. constellatus | – | 1 | 1 | – | |
S. gallolyticus | 2 | 3 | 3 | – | |
S. hominis | 1 | – | – | – | |
S. mitis | – | 2 | 2 | – | |
S. pneumoniae | 2 | – | – | – | |
Staphylococcal sp. | |||||
Staphylococcus aureus | 6 | 2 | 2 | – | |
S. aureus, methicillin-resistant | 4 | – | – | – | |
S. capitis | 4 | – | – | – | |
S. epidermidis | 24 | 14 | 14 | – | |
S. haemolyticus | 1 | 2 | 1 | 1 | |
S. lugdunensis | 2 | 2 | 2 | – | |
Negative | Enterobacter aerogenes | 2 | – | – | – |
Escherichia coli | 16 | 7 | 5 | 2 | |
Citrobacter freundii | – | 1 | 1 | – | |
Klebsiella oxytoca | 1 | 1 | 1 | – | |
Klebsiella pneumoniae | 3 | 1 | – | 1 | |
Proteus mirabilis | – | 1 | – | 1 | |
Pseudomonas aeruginosa | 1 | – | – | – | |
Salmonella paratyphi | 1 | – | – | – | |
Salmonella typhi | 1 | 1 | – | 1 | |