TABLE 2.
Culture characteristics | No. (%) |
---|---|
Specimen Gram stain | |
Polymorphonuclear leukocytes | |
None | 34 (49) |
Rare/few | 21 (30) |
Moderate/abundant | 15 (21) |
Gram-positive cocci present | 42 (60) |
PMNs and Gram-positive cocci present | 22 (31) |
Βeta-hemolysis on blood agar | 78 (96) |
Method of SIG identification | |
Phenotypic | 29 (36) |
Errors in initial identification | 6 (21) |
MALDI-TOF MSa | 52 (64) |
Errors in initial identification | 0 (0) |
PYRb | |
Positive | 26 (96) |
Negative | 1 (4) |
Staphylococcal latex agglutination | |
Positive | 6 (15) |
Negative | 19 (47.5) |
Questionable | 15 (37.5) |
Matrix-assisted laser desorption ionization–time of flight mass spectrometry with Bruker Biotyper.
Pyrrolidonyl arylamidase.