Weekly epidemiological update: Omicron variant of concern (VOC) – week 2 (data as of 20 January 2022) EU/EEA

As of 20 January 2022, the Omicron variant has been identified in all EU/EEA countries. From 20 December 2021 to 9 January 2022, there were 22 EU/EEA countries with adequate sequencing volume that reported an estimated prevalence of Omicron VOC of 69.4%.