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Table 4 Pathogens identified from the blood culture samples using PCR- and microarray-based analysis.

From: Rapid identification of bacterial pathogens using a PCR- and microarray-based assay

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)
  1. * The figures obtained after post hoc adjustments are presented in parentheses