Article Figures & Data
Figures
- FIG 1
Colony morphologies of Staphylococcus intermedius group members and Staphylococcus aureus at 24 h of growth. (A) Colony morphology of S. aureus on a sheep blood agar plate. (B) Beta-hemolysis caused by S. aureus. The photo was taken using backlighting to highlight the hemolysis pattern. (C) Colony morphology of S. intermedius group on a sheep blood agar plate. (D) Double zone of beta-hemolysis caused by an S. intermedius group member. The photo was taken using backlighting to highlight the hemolysis pattern. (E) Growth of an S. intermedius group member on a Spectra MRSA chromogenic agar plate (Remel Microbiology Products, Lenexa, KS). (F) Growth of an S. intermedius group member on mannitol salt agar (Remel Microbiology Products).
- FIG 2
Biochemical characteristics of Staphylococcus intermedius group members compared to those of Staphylococcus aureus, and susceptibility testing for S. intermedius group members. (A) Latex agglutination test (coagulase) result for S. aureus; (B) latex agglutination test (coagulase) result for S. intermedius group members; (C) PYR testing results for S. aureus (left, negative) and S. intermedius group members (right, positive); (D) discrepant cefoxitin (FOX 30; 26-mm diameter) and oxacillin (OX 1; 15-mm diameter) results for an S. intermedius group isolate.
Tables
- TABLE 1
Biochemical characteristics used to differentiate Staphylococcus aureus from animal-adapted, coagulase-positive Staphylococcus speciesa
Staphylococcus species Presence of indicated characteristic Clumping factor Free coagulase PYR Urease Heat-stable nuclease d-Mannitol fermentation Polymyxin B resistance S. aureus + + − V + + + S. intermedius V + + + + V − S. pseudintermedius − + + + + + V S. delphini − + ND + − + − S. schleiferi subsp. schleiferi + − + − + − − S. schleiferi subsp. coagulans − + V + + V − ↵a Data are adapted from references 4 and 11. +, 90% or more strains were positive; V, results were varied; −, 90% or more strains were negative; ND, not determined.
