もう次の変異株が報告されてるって。素早く感染を繰り返すと変異するのも早いのかねえ。
https://www.reuters.com/world/uk/uk-designates-omicron-sub-lineage-variant-under-investigation-2022-01-21/
ReutersUK designates Omicron sub-lineage a variant under investigationThe UK Health Security Agency on Friday designated a sub-lineage of the dominant and highly transmissible Omicron coronavirus variant as a variant under investigation, saying it could have a growth advantage.