FIG. 3.

Summary of the different recombination patterns identified for each CVB serotype. Bars represent phylogenetically distinct sequences (i.e., a monophyletic lineage of homologous serotype), defined by intervening isolates of a heterologous serotype in the trees in Fig. 2. Lowercase letters indicate the 5′-NTR lineage within each serotype. Numbers after the lowercase letters indicate the 3D sublineage of that 5′-NTR lineage. The lineages are labeled chronologically, except when their relationship in 3D dictates a different order to maintain clarity. Numbers in the bars are the number of isolates of that lineage and the range of years in which the lineage was isolated.