Figure 2.

Maximum likelihood tree based on concatenated core/E1 (869–1292 on H77 reference) and NS5B (8276–8615 on H77 reference) nucleotide sequences. Hepatitis C virus sequences are designated by accession number or sequence ID, followed by subtype designation and unique name. Sequences for the 30 nonrecombinant isolates described in this study are colored in blue. Bootstrap resampling (1000 replications) support values are shown at nodes. The tree is rooted using genotype 1 sequences, and all horizontal branch lengths are drawn to a scale of nucleotide substitutions per site.