Table 1.
The 12 most widely dispersed clones of macrolide resistant S. pyogenes.
| emm type | Resistance gene | ST | No. of countries | No. of continents | SLVs sharing the same emm type and resistance gene as the founder clone |
|---|---|---|---|---|---|
| 94 | erm(A) | 89 | 12 | 6 | None |
| 4 | mef(A) | 39 | 17 | 5 | ST38,373,421,422,423 |
| 12 | mef(A) | 36 | 16 | 5 | None |
| 58 | erm(A) | 176 | 10 | 5 | None |
| 12 | erm(B) | 36 | 9 | 3 | None |
| 22 | erm(B) | 46 | 8 | 3 | None |
| 73 | erm(A) | 331 | 5 | 3 | None |
| 1 | erm(B) | 28 | 5 | 3 | None |
| 75 | mef(A) | 49 | 5 | 3 | ST388,548 |
| 22 | mef(A) | 46 | 3 | 3 | ST389 |
| 28 | erm(B) | 52 | 11 | 2 | ST244 |
| 77 | erm(A) | 63 | 10 | 2 | ST369 |