29.11.21 | Lineage updates, New lineages

Renaming of lineage AY.12 to AY.122.1

The latest release of the pangoLEARN model (2021-11-18, trained on pango-designation v1.2.97) includes lineage AY.122. The previously designated AY.12 lineage is a sub-clade within AY.122. Therefore to maintain the hierarchical nomenclature system where lineage labels descend from their parental lineage label, we have updated lineage AY.12 to AY.122.1. The label AY.12 has therefore been withdrawn and sequences that were previously designated as AY.12 are now designated AY.122.1

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