Figure 3.

Neighbor-joining phylogenetic tree of HCV variants based on the NS5B gene sequence. The tree shows the phylogenetic relationships between HCV sequences obtained from 42 inmates (marked by a dot) and reference HCV sequences with a confirmed sub-genotype. The country of origin of non-Italian inmates is indicated. The abbreviations in capital letters before each number of the dotted sequences represent the city where the inmate resided. BA = Bari, BS = Brescia, GE = Genoa, LT = Lamezia Terme, SS = Sassari, VT = Viterbo.