Molecular Epidemiology of Human Enterovirus 71 Strains and Recent Outbreaks in the Asia-Pacific Region: Comparative Analysis of the VP1 and VP4 Genes
Figure 4. Phylogenetic relations of human enterovirus 71 (HEV71) strains belonging to genogroup B (21). Dendrogram shows the genetic relationships among 24 HEV71 strains belonging to genogroup B, based on the alignment of a partial VP1 (nucleotide positions 2442–3281) or complete VP1 (nucleotide positions 2442–3332) gene sequences. Details of the HEV71 strains included in the dendrogram are provided in Appendix Tables 1 and 2. Branch lengths are proportional to the number of nucleotide differences. The bootstrap values in 1,000 pseudoreplicates for major lineages within the dendrogram are shown as percentages. The marker denotes a measurement of relative phylogenetic distance. The VP1 nucleotide sequence of the prototype BrCr-CA-70 (30) was used as an outgroup in the analysis.