Phylogenetic tree of the amplified HEV sequences. The tree was constructed as described in the Methods with sequences from this study (in boxes) and sequences representing the four HEV gts (1-4) retrieved from GenBank (see Methods). Branch lengths are drawn to scale. The scale bar corresponds to 10% nucleotide sequence divergence. The number represents bootstrap proportions in support of the adjacent node, based on 100 resampling iterations. Only bootstrap proportions greater than 90% are shown.