Table 4 Pulsed-field gel electrophoresis (PFGE) clusters, serotypes and sequence types of azithromycin-resistant Streptococcus pneumoniae isolates with PCR positive for erm(B) / mef(A)- positive genes
PFGE cluster* | No. of isolates (n = 87)** | Serotype (no. of isolates) | Sequence type (no. of isolates) |
|---|---|---|---|
I | 4 | 19 F (3), 19A (1) | 320 (2), 236 (2) |
II | 16 | 19 F (12), 19A (4) | 320 (9), 236 (2), 271 (5) |
III | 7 | 19 F (7) | 236 (6), 271 (1) |
IV | 3 | 19 F (3) | 320 (1), 236 (1), 237 (1) |
V | 9 | 19 F (9) | 236 (9), |
VI | 24 | 19 F (11), 19A (13) | 320 (13), 236 (3), 271 (3), 6993 (1) 3164 (1), 7123 (1), 8525 (1), 283 (1), |
VII | 4 | 19 F (4) | 320 (1), 236 (1), 271 (1), 283 (1) |
VIII | 5 | 19 F (1), 6A (2), 23 F (1), 23A (1), | 236 (1), 81 (4) |
Un-clustered | 15 | 19 F (7), 19A (3), 23 F (2), 6B (1), 6A (1), 14 (1) | 320 (3), 236 (4), 271 (1), 81 (2), 76 (1), 275 (1), 2993 (1), 3111 (1), 3625 (1) |