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Prevalence of PA residue 26 polymorphisms in avian influenza viruses
| Virus(es) | Glutamic acid (%) | Lysine (%) | Other (% [polymorphism]) |
|---|---|---|---|
| All avian influenza viruses | 99.92 | 0.02 | 0.04 (glycine), 0.01 (aspartic acid), 0.01 (glutamine) |
| H5Nx | 99.73 | 0.03 | 0.07 (glycine), 0.11 (aspartic acid), 0.03 (glutamine) |
| H7Nx | 99.92 | 0.00 | 0.08 (glycine) |
| H9Nx | 99.87 | 0.13 | 0.00 |
