Research and analysis

Imperial College London: Omicron severity and vaccine effectiveness, 5 January 2022

Paper prepared by Imperial College London on the Omicron variant of concern.

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Imperial College London: Omicron severity and vaccine effectiveness, 5 January 2022

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Paper by the Imperial College London COVID-19 Response team on the Omicron variant of concern (B.1.1.529) and vaccine effectiveness. It was considered at SAGE 102 on 7 January 2022.

This paper is the assessment of the evidence at the time of writing. As new evidence or data emerges, SAGE updates its advice accordingly.

These documents are released as pre-print publications that have provided the government with rapid evidence during an emergency. These documents have not been peer-reviewed and there is no restriction on authors submitting and publishing this evidence in peer-reviewed journals.

Redactions in this document have been made to remove any security markings.

Updates to this page

Published 14 January 2022

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