Fig. 5

Bayesian phylogenetic maximum clade credibility (MCC) tree for 183 sequences of HEV ORF1 (852 nt of the 3′ end). This tree was constructed using a strict clock model with a constant growth prior. The numbers at each tree represent the mean values for age of the most recent common ancestor (MRCA) at that node (PP = posterior probability). Each genotype clade was collapsed and labeled (refer to Additional file 9: Figure S4 for the detailed tree with each sequence labeled with its year of collection followed by GenBank accession number, genotype, region of isolation and the host)