December 2021: Unpublished pre-print study looking at the effectiveness of COVID-19 vaccines against the SARS-CoV-2 Omicron variant of concern. Severity of Omicron variant of concern and vaccine effectiveness against symptomatic disease: national cohort with nested test negative design study in Scotland Sheikh, A; Kerr, S; Woolhouse, M; McMenamin, J & Robertson, C The University of Edinburgh (Edinburgh Research Server) Published online on: 22 December 2022 Available online at: https://www.research.ed.ac.uk/en/publications/severity-of-omicron-variant-of-concern-and-vaccine-effectiveness- Read the briefing round up from the Science Media Centre Read the Plain English Summary of our peer reviewed article This article was published on 2024-09-24