Fig. 2. Phylogenetic tree analysis of the donors with long-term HEV viremia and/or antigenemia.

Phylogenetic tree of genotypes 1–4 (a) and genotypes 2 and 4 alone (b). The HEV sequences were based on partial ORF2 nucleotide sequences from blood donors. The sequences from donors 2 and 7 are shown in blue and red, respectively. In the phylogenetic trees for genotypes 2 and 4 alone, the GenBank accession number, virus host, and country of detection are indicated for the reference sequences. The bootstrap values > 70 were shown