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Additional file 4: Figure S1. Map of the collection locations of new isolates and previously reported Japanese PPV-D isolates used for analysis or discussion in this study.

Additional file 7: Figure S3. Phylogenetic tree generated by the maximum-likelihood method with 1000 bootstrap replicates based on complete genome sequences of new seven isolates and 47 non-Japanese PPV-D isolates.

Additional file 6: Figure S2. Phylogenetic tree generated by the maximum-likelihood method with 1000 bootstrap replicates based on complete genome sequences of new seven isolates and each representative isolate of PPV strains.