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Bayesian inference phylogenetic tree based on 76 orthopoxvirus whole genomes. Posterior probabilities are shown on the right side of each node, and only posterior probabilities above 0.6 are shown. The cowpox virus strains were grouped into different clades: CPXV-like 1, CPXV-like 2, and VARV-like (Franke et al., 2017). The scale bar represents the expected substitutions per site.
