Figure 2. Phylogenetic analysis of the viral protein 7 gene of G8 rotavirus strains used in a study of the clinical and molecular features of a G8P rotavirus outbreak strain, Hokkaido Prefecture, Japan, 2014. Closed circle indicates the G8P rotavirus strain from Hokkaido; open circles indicate human G8P strains from Southeast Asia; and closed boxes indicate other strains from Japan. A Tamura 3-parameter model was used for the maximum-likelihood method. Bootstrap values are shown at the branch nodes (values of <80% are not shown). Scale bar indicates nucleotide substitutions per site.