TABLE 2.
Results of the molecular analysis of the ErmB determinants detected in the C. difficile clinical isolates examined in this study
| PCR ribotype | ErmB determinant arrangements (no. of strains) | Results of PCR assays (length in bp)a
|
C. difficile strains with a similar element (reference) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 6 | 7 | 8 | ||||
| A | E1 (4) | + (610) | + (1,506) | + (1,044) | + (2,219/1,247) | − | + (1,166) | + (2,759) | 630 (8) | |
| E2 (17) | + (610) | − | − | + (1,247) | − | − | − | C191 (21) | ||
| D | E3 (1) | + (388) | + (1,527) | − | + (2,219) | − | − | − | F17 (21) | |
| E4 (2) | + (388) | + (1,527) | − | − | − | − | − | 662 (8) | ||
| R | E4 (1) | + (388) | + (1,527) | − | − | − | − | − | 662 (8) | |
| E5 (1) | − | − | − | + (1,247) | − | − | − | This study | ||
| E6 (1) | + (388) | − | − | − | − | − | − | L289 (8) | ||
| E7 (1) | + (2,000) | − | − | − | − | − | − | This study | ||
a
Results of PCR assays for amplification of Erm determinant regions and approximate length of fragments in bp.