TABLE 1.
Dispersal statistics for Lassa virus lineages estimated from continuous phylogeographic analysesa
| Lineage | Mean branch dispersal velocity (km/yr) | Weighted dispersal velocity (km/yr) | Mean diffusion coefficient (km2/yr) | Weighted diffusion coefficient (km2/yr) |
|---|---|---|---|---|
| L segment | ||||
| Lineage II | 4.08 [2.36–12.2] | 1.33 [0.96–1.73] | 67.7 [42.3–185] | 49.4 [35.6–74.6] |
| Lineage III | 2.21 [1.18–4.83] | 0.92 [0.65–1.23] | 64.6 [30.8–162] | 38.6 [25.7–53.0] |
| S segment | ||||
| Lineage II | 9.93 [4.66–39.2] | 1.47 [1.23–1.73] | 839.3 [291–4454] | 85.4 [71.8–100] |
| Lineage III | 3.19 [1.83–11.7] | 1.04 [0.86–1.25] | 101.2 [58.1–429] | 43.4 [35.5–59.1] |
a
The table reports median value and 95% highest posterior density interval for each estimate. Mean branch velocity and diffusion coefficient are estimates over all tree branches. The weighted estimates involve a weighting by branch time.