Fig. 1.

Distributions of pairwise nucleotide p-distances for the VP1 region of HRV-A (a), -B (b) and -C (c). Left graphs show number of sequences of the pairwise distances between all available VP1 sequences in black (left y-axis) and a comparison of prototype strains only in grey (right y-axis). The proposed thresholds for type assignment are shown as dotted lines. Right graphs show the sequences distances around the proposed assignment thresholds for each species shown using an expanded x-axis scale.