Table 2.
Clones in relation to toxin gene carriage among S. aureus recovered from both studied groups. Numbers of isolates are given in parentheses.
| 1 Clones | PFGE Type/agr Allele | CA-/HA-MRSA | 2 Group A (N = 90) | 3 Group B (N = 53) | ||
|---|---|---|---|---|---|---|
| ICU Patients (N = 67) | ICU Personnel (N = 23) | |||||
| PVL-positive MRSA (47) | ST80-IV (45) | C/3 (43), C/1 (1), C/NT (1) | 33/12 | 16 | 2 | 27 |
| ST72-IV (2) | B/1 (1), E/1 (1) | 0/2 | 2 | 0 | 0 | |
| PVL-positive MSSA (7) | ST14 (4) | Y/1 (2), A/1 (1), C/2 (1) | - | 3 | 0 | 1 |
| ST97 (1) | C/1 (1) | - | 0 | 0 | 1 | |
| ST101 (2) | C/2 (2) | - | 0 | 0 | 2 | |
| tst-positive MRSA (2) | ST30-IV (2) | A/3 (2) | 0/2 | 0 | 2 | 0 |
| tst-positive MSSA (18) | ST30 (10) | A/3 (9), A/4 (1) | - | 7 | 2 | 1 |
| ST2123 (6) | Y/1 (6) | - | 6 | 0 | 0 | |
| ST27 (1) | Y/2 (1) | - | 1 | 0 | 0 | |
| ST45 (1) | F/1 (1) | - | 0 | 1 | 0 | |
| Toxin negative MRSA (8) | SΤ239-III (4) | B/1 (3), B/NT (1) | 0/4 | 3 | 0 | 1 |
| ST225–II (2) | C/3 (2) | 0/2 | 1 | 1 | 0 | |
| ST30–IV (2) | A/3 (2) | 1/1 | 0 | 1 | 1 | |
| Toxin negative MSSA (61) | - | 16 PFGE/agr types | - | 28 | 14 | 19 |
PFGE: pulsed field gel electrophoresis; CA-MRSA: community-associated MRSA; HA-MRSA: healthcare-associated MRSA; NT: non-typable to agr allele. 1 Clones: clones defined by multi locus sequencing typing (MLST) among MSSA and MLST-SCCmec types among MRSA; 2 Group A: colonizing isolates from patients and healthcare workers in ICUs; 3 Group B: colonizing isolates from non-ICU patients during the study period.