Enigmatic origin of hepatitis B virus: An ancient travelling companion or a recent encounter?

Figure 1 Distribution of hepatitis B virus-D subgenotypes D in Eurasia and the Mediterranean basin. The countries are coloured on the basis of their prevalent subgenotypes.

Figure 2 Distribution of hepatitis B virus genotypes in Africa. The countries are coloured on the basis of their prevalent genotypes/subgenotypes.

Figure 3 Distribution of hepatitis B virus-F subgenotypes in Latin America. The countries are coloured on the basis of their prevalent genotypes/subgenotypes.

Figure 4 Maximum clade credibility tree of hepatitis B virus-D P gene sequences. The numbers on the internal nodes represent posterior probabilities, and the scale at the bottom of the bottom of the tree the number of years before the present. The clades corresponding to the main hepatitis B virus-D subgenotypes (D1-D5 and D7) are highlighted. The intravenous drug users-associated D3 sub-clade is coloured pale blue.