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

J√§rvinen et al. BMC Microbiology 2009 9:161   doi:10.1186/1471-2180-9-161

Open Data