TABLE 1

Molecular characterization of 75 methicillin-susceptible Staphylococcus aureus isolates, University of Chicago Medical Center, 1995 to 1997a

MLSTTotal no. of isolates (%)PVLYr of isolationNo. of isolates
12 (2.7)19961
+19961
510 (13.3)19952
19967
19971
84 (5.3)19963
19951
1512 (16)19952
19967
19973
253 (4)19951
19961
19971
3016 (21.3)19952
19967
19976
+19961
391 (1.3)19961
4513 (17.3)19953
19969
19971
511 (1.3)19961
594 (5.3)19951
19963
961 (1.3)19971
1011 (1.3)19961
1093 (4)19962
19951
1211 (1.3)+19951
4351 (1.3)19961
4741 (1.3)19961
5081 (1.3)19951
Total75 (100)75
  • a All isolates were negative for opp3 and arcA, markers for the arginine catabolic mobile element (ACME), by PCR. MLST, multilocus sequence typing; PVL, Panton-Valentine leukocidin.