TABLE 3.
Molecular evolution of the HA gene of influenza A virus subtypes H13 and H16
| Genetic lineage | Na | Time period (yrs) | Substitution rateb
|
Mean dN/dS | |
|---|---|---|---|---|---|
| Mean | 95% HPD | ||||
| H13 | 338 | 40 | 3.8 | 3.6–4.1 | 0.13 |
| H13 A | 54 | 39 | 3.8 | 2.3–4.9 | 0.09 |
| H13 B | 76 | 39 | 0.8 | 0.6–1.0 | 0.18 |
| H13 C | 208 | 37 | 5.5 | 5.0–6.0 | 0.16 |
| H16 | 192 | 41 | 3.1 | 2.8–3.4 | 0.09 |
| H16 A | 56 | 33 | 4.5 | 3.9–5.2 | 0.10 |
| H16 B | 19 | 35 | 4.6 | 3.9–5.2 | 0.06 |
| H16 C | 117 | 40 | 1.5 | 1.2–1.8 | 0.11 |
a
Number of nucleotide sequences included in the analysis.
b
Values are substitutions (10−3) per site per year. HPD, highest posterior density.