FIG. 1.

Genotyping of six donor-recipient clusters. Unrooted NJ phylogenetic tree of the HCV 258-nt consensus E1/E2 region, including HVR1. Reference sequences of known genotypes are in boldface. Donors and recipients from the six clusters studied are indicated as follows: cluster number (c1 to c6), d for donor, r1 and r2 for recipients 1 and 2, and number of the most representative variants for each quasispecies. Bootstrap percentages of 1,000 bootstrap replicates are given along the appropriate branches. Bootstrap values <50% are not shown. All clades for which the bootstrap values are indicated were also supported by P values of <0.01 in the ML tree, except for the P < 0.05 indicated in the figure.