Figure 5.

Genetic relatedness of hepatitis E virus (HEV) strains identified in U.S. residents with either autochthonously acquired genotype (gt)3 or travel-associated (gt1 and gt4) hepatitis E. The phylogenetic tree was generated using the neighbor-joining method, and includes gt3 swine HEV sequences and representative sequences of each of the four major Orthohepesvirus A genotypes. (From Drobeniuc et al. 2013; adapted courtesy of Public Domain material provided by the journal Emerging Infectious Diseases.)