Fig. 4.

Distribution of inter- and intra-type HRV-A pairwise p-distances around the proposed 13 % VP1 divergence threshold. VP1 p-distances between or within types that are consistent with the proposed 13 % type-assignment threshold for VP1 are shown in blue (intra-type) and red (inter-type). Pairwise distances between types that we propose should be combined are shown in green. Comparisons that violate the VP1 assignment threshold are shown in pink (different HRV types but with distances falling below the threshold) and purple (intra-type comparisons falling above the divergence threshold). The y-axis shows the number of sequences.