Table 1. Statistical analysis of geographic structure for highly pathogenic avian influenza A(H5N1) viruses*.
| Region |
Maximum monophyletic clade size |
| Observed mean | 95% CI | Null mean | 95% CI | Significance, p value | |
|---|---|---|---|---|---|
| South Korea and Japan | 50.44 | 49.0–68.0 | 1.66 | 1.19–2.04 | 0.001 |
| Siberia | 8.90 | 8.0–11.0 | 1.59 | 1.11–2.01 | 0.001 |
| Southeast Asia | 311.54 | 296.0–440.0 | 4.57 | 3.93–5.95 | 0.001 |
| Africa | 47.73 | 38.0–64.0 | 3.55 | 3.12–4.30 | 0.001 |
| Hong Kong | 17.00 | 17.0–17.0 | 1.99 | 1.65–2.24 | 0.001 |
| China | 32.88 | 28.0–42.0 | 3.74 | 3.23–4.65 | 0.001 |
| Europe | 80.08 | 80.0–80.0 | 2.21 | 2.01–3.00 | 0.001 |
| Central and western Asia | 5.23 | 3.0–8.0 | 1.32 | 1.00–2.00 | 0.001 |
| Southern Asia | 106.00 | 106.0–106.0 | 2.03 | 1.75–2.30 | 0.001 |
*Analyzed by using Bayesian Analysis of Time Series (27).