Table 4.
Pathogens identified from the blood culture samples using PCR- and microarray-based analysis.
| Correct positive identification of the bacteria | Number | Correct negative identification | Number |
|---|---|---|---|
| Staphylococcus aureus | 24 | Bacillus sp | 2 |
| Enterococcus faecalis | 9 | Bacteroides fragilis group | 2 |
| Staphylococcus epidermidis +mecA | 8 | Candida albicans | 4 |
| Klebsiella pneumoniae | 7 | Diphtheroid | 1 |
| Streptococcus pneumoniae | 6 | Enterobacter cloacae | 1 |
| Streptococcus pyogenes | 6 | Enterococcus casseliflavus | 1 |
| Enterococcus faecium | 4 | Enterococcus sp | 4 |
| CNS (Staphylococcus haemolyticus) | 1 | Escherichia coli | 19 |
| CNS + mecA (S. haemolyticus) | 1 | Escherichia coli, Streptococcus viridans | 2 |
| Streptococcus agalactiae | 1 | Fusobacterium necrophorum | 3 |
| Fusobacterium nucleatum, Micromonas micros | 1 | ||
| Correct positive identification of the bacteria but an additional mecA marker identified | Klebsiella oxytoca | 4 | |
| Streptococcus pneumoniae + mecA | 1 | Micrococcus sp | 1 |
| Enterococcus faecalis + mecA | 1 | Propionibacter sp | 2 |
| Pseudomonas aeruginosa | 3 | ||
| Pseudomonas-like gram- rod | 1 | ||
| Salmonella Enteritidis | 3 | ||
| Salmonella Paratyphi A | 1 | ||
| Stenotrophomonas maltophilia | 1 | ||
| Streptococcus betahemolytic group C | 1 | ||
| Streptococcus bovis | 1 | ||
|
Streptococcus sanguis (co-infection with K. pneumoniae) |
|||
| Streptococcus viridans | 4 | ||
| Blood culture negative samples | 40 | ||
| False negative identification* | |||
| CNS | 6 (0) | ||
| Staphylococcus aureus | 2 (1) | ||
| Staphylococcus epidermidis | 2 (1) | ||
| Streptococcus pyogenes | 1 (1) | ||
| Streptococcus agalactiae | 1 (0) | ||
| Streptococcus pneumoniae | 1 (0) | ||
| Enterococcus faecalis | 1 (0) | ||
| Enterococcus faecium | 1 (0) | ||
* The figures obtained after post hoc adjustments are presented in parentheses