Table 2.
Expected and observed amino acid mutations for the HA and NA genes found in this study.
| Mutation* | Gene | Percentage (Expected)** | Percentage (Observed) |
|---|---|---|---|
| S101N | HA | 0.2% | 0.0% |
| S220T | HA | 76.7% | 100% |
| D239E | HA | 5.5% | 0.0% |
| D239G | HA | 2.6% | 0.0% |
| N387H | HA | 1.7% | 0.0% |
| E391K | HA | 15.6% | 30.8% |
| V106I | NA | 85.1% | 100% |
| D199N | NA | 0.3% | 0.0% |
| I223R | NA | 0.2% | 0.0% |
| N248D | NA | 85.9% | 100% |
| H275Y | NA | 2.0% | 0.0% |
*
Amino acid positions are based on the H1N1pdm 09 vaccine strain A/California/07/2009.
**
Expected percentage of mutations for the HA and NA genes, based on published worldwide data [14].