Author affiliations: Yamagata Prefectural Institute of Public Health, Yamagata, Japan (K. Mizuta, Y. Aoki, T. Ikeda, C. Abiko, T. Ahiko); National Institute of Infectious Diseases, Tokyo, Japan (M. Kuroda, T. Sekizuka, M. Noda, H. Kimura, T. Mizutani); Yonezawa City Hospital, Yamagata (M. Kurimura, Y. Yahata); and Yamagata University Faculty of Medicine, Yamagata (T. Kato, T. Kawanami)
Figure 2. . . Phylogenetic tree of the viral protein 1 region sequence in the available human parechovirus (HPeV) genomes, including HPeV1–8. The tree was constructed by the neighbor-joining method with 1,000× bootstrapping. Scale bar indicates nucleotide substitutions per site.
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