Table 1

Distribution of isolates encountered during the study and numbers of isolates correctly identified, misidentified, or not detected

OrganismTotal no. of isolatesNo. (%) of isolates correctly identifiedcNo. (%) of isolates not detectedNo. (%) of isolates incorrectly identified
Staphylococcus aureus4544 (98)1 (2)
    MSSA1413 (93)1 (7)
    MRSA3131 (100)
CoNS117107 (91)10 (9)
    S. epidermidis5447 (87)7 (13)d
    Other CoNS6159 (97)2 (3)
    S. lugdunensis21 (50)1 (50)
Enterococci1918 (95)1 (5)
    Enterococcus faecalis1514 (93)1 (7)
    Enterococcus faecium44 (100)
Streptococci2624 (92)2 (8)
    Streptococcus pneumoniae66 (100)
    Streptococcus pyogenes11 (100)
    Streptococcus agalactiae22 (100)
    Streptococcus anginosus group11 (100)
    Other streptococci1614 (88)2 (13)
Total207193 (93)12 (6)2 (1)
Other
    Gram-positive bacillia1313 (100)
    Otherb54 (80)1 (20)
    Granulicatella spp.22 (100)
Total isolates2273 (1)
  • a Includes Bacillus spp., Corynebacterium spp., etc.

  • b Includes one isolate each of E. casseliflavus, Dermacoccus spp., and Leuconostoc spp. and two isolates of Rothia spp.

  • c Correct identification to the species level.

  • d A total of 4 of 7 isolates of S. epidermidis were correctly identified to the genus level but not to the species level.