TABLE 7.

Polymicrobial positive blood cultures: both organisms identified

Specimen no.Conventional IDProbe matrix ID
6E. faecalis, P. aeruginosaEnterococcus, small amount of P. aeruginosa
12DP. aeruginosa, CoNSStaphylococcus, not S. aureus, small amount of P. aeruginosa
19DE. coli, viridans group StreptococcusE. coli, small amount of gram-positive (low G+C) organism
51Enterobacter cloacae, Enterobacter sp.Enterobacteriaceae, not E. coli
56DFusobacterium mortiforum, CoNSGram-positive (low G+C),a small amount of Staphylococcus, not S. aureus
60Clostridium perfringens, CoNSGram-positive (low G+C), not Staphylococcus, Enterococcus, S. pneumoniae, or Actinomycetes; small amount of Staphylococcus, not S. aureus
127Klebsiella oxytoca, Bacillus sp.Enterobacteriaceae, not E. coli; small amounts of gram-positive (low G+C) organism, not Staphylococcus, Enterococcus, S. pneumoniae, or Actinomycetes
182P. aeruginosa, E. faeciumP. aeruginosa, Enterococcus
245Klebsiella pneumoniae, Enterobacter sp.Enterobacteriaceae, not E. coli
  • a Fusobacterium mortiforum is a gram-negative rod, but phylogenetically, based on rRNA sequencing, falls within the gram-positive lineage (Sydney Finegold, personal communication).