| Code | Definition | Number of Accessions |
| 0 | 0 (no infection), 1 (weak) - 9 (strong) | 10 |
| 1 | 0 (no infection), 1 (weak) - 9 (strong) | 13 |
| 2 | 0 (no infection), 1 (weak) - 9 (strong) | 17 |
| 3 | 0 (no infection), 1 (weak) - 9 (strong) | 36 |
| 4 | 0 (no infection), 1 (weak) - 9 (strong) | 80 |
| 5 | 0 (no infection), 1 (weak) - 9 (strong) | 77 |
| 6 | 0 (no infection), 1 (weak) - 9 (strong) | 46 |
| 7 | 0 (no infection), 1 (weak) - 9 (strong) | 46 |
| 8 | 0 (no infection), 1 (weak) - 9 (strong) | 29 |
| 9 | 0 (no infection), 1 (weak) - 9 (strong) | 3 |