Fig. 6. Spatiotemporal diffusion of the Alpha and Delta variants in Cambodia using discrete phylogeographic reconstruction.

a, b Trunk reward proportion was estimated for each geographic location over time for the Alpha and Delta variant, respectively. c, d Asymmetric non-zero migration rates between pairwise location states were inferred using the Bayesian stochastic search variable selection (BSSVS) model. e, f Migration pathways with statistical support were inferred using SPREAD 3. Solid lines represent significant migration routes with strong support (Bayes factor of ≥100), and dotted lines represent transmission routes with moderate support (BF between 3 and 99). Other rest of the world, PSRKM include five provinces (Preah Vihear, Stung Treng, Ratanakiri, Kratie and Modulkiri), SE Cam Southeast Cambodia, SW Cam Southwest Cambodia, SE Asia Southeast Asia.