TABLE 2.

Comparative frequency of groups of species by specimen collection type

OrganismNo. of isolates (% of specimens yielding the groupa) obtained by or with:
Total (n = 454)Aspiration (n = 52 [11.5b])Swab (n = 132 [29.1])Tissue (n = 258 [56.8])Not specified (n = 12 [2.6])
Aerobes
    Nonfermenting gram-negative rods35 (7.7)5 (9.6)10 (7.6)18 (7.0)2 (16.7)
    Pseudomonas spp.42 (9.3)3 (5.8)15 (11.4)24 (9.3)0
    Enterobacteriaceae group147 (32.4)16 (30.8)45 (34.1)85 (32.9)1 (8.3)
    Corynebacterium spp.116 (25.6)7 (13.5)32 (24.2)72 (27.9)5 (41.7)
    Miscellaneous gram-positive rods53 (11.7)3 (5.8)18 (13.6)32 (12.4)0
    Enterococcus spp.154 (33.9)10 (19.2)56 (42.4)84 (32.6)4 (33.3)
    Staphylococcus spp.388 (85.5)34 (65.4)107 (81.1)237 (91.9)10 (83.3)
    S. aureus, Ox-Rc53 (11.7)4 (7.7)20 (15.2)24 (9.3)1 (8.3)
    S. aureus, Ox-Sd164 (36.1)22 (42.3)46 (34.8)93 (36.0)3 (25.0)
    S. epidermidis72 (15.9)2 (3.8)21 (15.9)47 (18.2)2 (16.7)
    S. epidermidis, Ox-R15 (3.3)06 (4.5)9 (3.5)
    S. haemolyticus22 (4.8)1 (1.9)4 (3.0)16 (6.2)1 (8.3)
    S. lugdunensis22 (4.8)1 (1.9)4 (3.0)14 (5.4)3 (25.0)
    Other coagulase-negative staphylococci36 (7.9)3 (5.8)7 (5.3)26 (10.1)
    Streptococcus spp.190 (41.9)23 (44.2)48 (36.4)110 (42.6)9 (75.0)
Anaerobes
    Bacteroides fragilis group55 (12.1)4 (7.7)16 (12.1)32 (12.4)3 (25.0)
    Fusobacterium spp.11 (2.4)1 (1.9)3 (2.3)7 (2.7)
    Porphyromonas spp.53 (11.7)4 (7.7)12 (9.1)37 (14.3)
    Prevotella spp.64 (14.1)2 (3.8)15 (11.4)46 (17.8)1 (8.3)
    Anaerobic cocci219 (48.2)14 (26.9)65 (49.2)133 (51.6)7 (58.3)
    Clostridium spp.20 (4.4)3 (5.8)7 (5.3)10 (3.9)
    Non-spore-forming, gram-positive rods43 (9.5)2 (3.8)11 (8.3)29 (11.2)1 (8.3)
  • a Percent represents the percentage of each type of specimen yielding the indicated organism group.

  • b Values in brackets are the percentage of all specimens.

  • c Ox-S, oxacillin sensitive.

  • d Ox-R, oxacillin resistant.