| Code | Definition | Number of Accessions |
| 2 | (0 = IMMUNE, 9 = HIGHLY SUSCEPTIBLE) | 3 |
| 3 | RESISTANT | 1 |
| 4 | (0 = IMMUNE, 9 = HIGHLY SUSCEPTIBLE) | 11 |
| 5 | INTERMEDIATE | 8 |
| 6 | (0 = IMMUNE, 9 = HIGHLY SUSCEPTIBLE) | 17 |
| 7 | SUSCEPTIBLE | 30 |
| 8 | (0 = IMMUNE, 9 = HIGHLY SUSCEPTIBLE) | 87 |
| 9 | HIGHLY SUSCEPTIBLE | 257 |