Table 1 Summary of four models
From: Changed epitopes drive the antigenic drift for influenza A (H3N2) viruses
Model | Regarding HA positions | Changed epitope | Antigenic variants |
|---|---|---|---|
Model one | 329 positions | ≥1 mutation | ≥2 changed epitopes |
Model two | 329 positions | ≥2 mutations | ≥2 changed epitopes |
Model three | 64 selected positions | ≥2 mutations | ≥2 changed epitopes |
Model four | 64 selected positions | ≥3 mutations (epitope B) ≥2 mutations (others) | ≥1 (epitopes A or B) ≥2 (others) |