Figure 1

A barplot of estimated fractions (left y-axis) of binned pango-lineages for three WWTPS: Eindhoven (Top), Weert (Center) and Westpoort (bottom). Lineages were binned into either the monophyletic clades AY.43 (B.1.617.2.43), BA.2 (B.1.1.529.2), BA.4 (B.1.1.529.4) and BA.5 (B.1.1.529.5) or the paraphyletic B.1.617.2 (excluding AY.43), with the remainder binned into ‘Other’. As a result of the abundance cut-off, not all abundances sum to 1. Viral load estimates (right y-axis), corrected for flow and number of connected inhabitant equivalents, are depicted as white dots connected by a gray line. Abundance estimates with bootstrapping confidence intervals are shown in Supplementary Table 1. Samples which were sequenced more than once are labeled with the corresponding number of times.