| Subtype | Number of sequences |
|---|---|
| ST1 | 270 |
| ST2 | 91 |
| ST3 | 87 |
| ST15 | 63 |
| ST4 | 6 |
| ST6 | 2 |
| ST7 | 2 |
| ST8 | 14 |
| ST9 | 78 |
| ST10 | 7 |
| ST12 | 139 |
| ST13 | 2 |
| ST14 | 21 |
| ST17 | 146 |
| ST18 | 4 |
| ST20 | 24 |
| ST21 | 1 |
| ST22 | 6 |
| ST24 | 20 |
| ST25 | 23 |
| ST26 | 2 |
| ST27 | 1 |
| ST28 | 2 |
| ST29 | 2 |
| ST30 | 1 |
| ST31 | 24 |
| ST32 | 1 |
| ST33 | 15 |
| ST11 | 1 |
| ST35 | 1 |
| ST36 | 1 |