• Updated sequence designations in B.1.617.2 and AY lineages to remove sequences designated to one of the AY lineages that do not cluster within that lineage and sequences designated B.1.617.2 that are in one of the AY clades. In total, 1946 sequence designations were removed, specifically (as their previous designations) 2 AY.3.1, 1255 AY.4, 77 AY.5, 3 AY.6, 3 AY.7, 25 AY.9, 26 AY.13, 2 AY.14, 2 AY.23, 29 AY.25 and 534 B.1.617.2