Tree obtained for HCV-1a sequences (GTR+Γ+I). B. Tree obtained for HCV-3a (TrN+Γ+I). C. Tree obtained for HCV-1b (HKY+Γ+I). Gray circles: samples from Mar del Plata. The rest of the samples were the most similar sequences (obtained by BLAST of each sequence from Mar del Plata) named after their GenBank accession number, following the three-letter ISO code of the country: ARG: Argentina; AUS: Australia; BRA: Brazil; CAN: Canada; CHE: Switzerland; CYP: Cyprus; DEU: Germany; ESP: Spain; FRA: France; GBR: the United Kingdom; GRC: Greece; IND: Indonesia; IRL: Ireland; MEX: Mexico; MTQ: Martinique; PHL: the Philippines; PRT: Portugal; TUN: Tunisia; USA: the United States of America. The numbers either above or below the branches are the bootstrap value (over 100 pseudo-replica for HCV-1a, and 1000 pseudo-replica for HCV-3a and HCV-1b).