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Number of avian virus isolates encoding mammalian-type amino acids at positions 627 and 701 in PB2 in the Influenza Virus Resource databasea
| Avian species | No. of viruses possessing: |
Total no. of viruses | |
|---|---|---|---|
| PB2-627Lys | PB2-701Asn | ||
| Duck | 1 | 1 | 375 |
| Chicken | 2 | 0 | 426 |
| Ratitae | |||
| Ostrich | 2 | 0 | 6 |
| Emu | 2 | 1 | 4 |
| Rhea | 1 | 0 | 2 |
Numbers of viruses isolated prior to 2005 from duck, chicken, and three Ratitae species (ostrich, emu, and rhea) are shown.
