Fig. 2From: Molecular epidemiology and phylogenetic analysis of Hepatitis B virus in a group of migrants in ItalyBayesian skyline plot (BSP) of the 17 HIV Moldavian HBV S gene sequences. The effective number of infections is reported on the Y-axis. Time is reported on the X-axis. The colored area corresponds to the credibility interval based on 95 % highest posterior density interval (HPD)Back to article page