Fig. 3 (A) Phylogenetic tree of the sequences identified in this study, classified as genotype A: Subgenotype A1. (B) Subgenotypes A2, F2A and F4. Only sequences belonging to these subgenotypes where shown individually, all the other ones were collapsed. The analysis was conducted using a Bayesian analysis using BEAST v1.8.3 software with 328 sequences (GenBank 261 and 67 of this study) of 1270 nucleotides of the S/polymerase in the HBV genome. Probability posterior values are shown in the branches. The sequences characterized in this study are marked with the symbol # and the sequences taken from GenBank are identified by subgenotype, followed by the access number and geographical origin. Sequences from members of the same family were shown with a circle and the family 7 is identified as F7.