Figure 2. Phylogenetic relationship of strains of Senecavirus A identified in Brazil during 2015 (black circles) and other sequences available in GenBank derived from species of picornavirus associated with vesicular disease. Maximum-likelihood phylogenetic tree construction used the Kimura 2-parameter model with γ distribution based on the partial viral protein (VP) 3/VP1 region of the Senecavirus A genome. GenBank accession numbers are given in parentheses. Bootstrap values determined in 1,000 replication. Scale bar indicates nucleotide substitutions per site.