Table 4.
Nucleotide percentage identity (green) and amino acid percentage similarity (red) distance matrices for the HA1 genes and proteins of the reported and presumed vaccine seed strains (Table 1) and the HI test antigens (Table 2).
| Seed strain/HI antigen | |||||||
|---|---|---|---|---|---|---|---|
| Leg/03 (%) | Cis/06 (%) | Pwt/06 (%) | Kon/07 (%) | Eng/73 (%) | Mex/94 (%) | rgGD/96 (%) | |
| Leg/03 | 96.2 | 96.3 | 97.4 | 86.9 | 79.3 | 96.1 | |
| Cis/06 | 95.0 | 99.9 | 95.7 | 85.0 | 77.6 | 93.0 | |
| Pwt/06 | 95.0 | 100 | 95.8 | 84.9 | 77.5 | 92.9 | |
| Kon/07 | 98.4 | 96.0 | 96.0 | 85.6 | 79.1 | 93.7 | |
| Eng/73 | 95.7 | 91.3 | 91.3 | 94.7 | 82.2 | 89.8 | |
| Mex/94 | 92.9 | 88.8 | 88.8 | 92.2 | 94.4 | 80.6 | |
| rgGD/96 | 98.8 | 93.8 | 93.8 | 96.9 | 96.9 | 93.8 | |
| Heatmap classes | |||||||
| Nucleotide identity | Amino acid similarity | ||||||
| >95% | >97.5% | ||||||
| 90–95% | 95–97.5% | ||||||
| <90% | <95% | ||||||