SARS-CoV-2 lineage AY.4.2.1

Overview:

Sequences seen: 5383

First seen on: 2020-12-21

Last seen on: 2022-02-24

More data: https://outbreak.info/situation-reports?pango=AY.4.2.1

Note: In the above data, "seen" refers to the date the sample was collected, unless that date was not provided for a sequence, in which case it refers to the date it was submitted to NCBI.