Breadcrumb Home / Resources / Publications / What is the Omicron Variant of Concern? Publication What is the Omicron Variant of Concern? 27 December 2021 The poster contains WHO verified information of Omicron variant in English, Albanian and Serbian, Caption: Basic information on Omicron variant of COVID-19 Photo: © WHO 2021 Published by RCO WHO English File type: PDF Downloads: 3816 Albanian File type: PDF Downloads: 3176 Serbian File type: PDF Downloads: 3450 Goals we are supporting through this initiative Related Resources Resources 15 October 2025 Tracking progress on socio-economic, education & health indicators 2025 Resources 25 July 2025 WHO: Health Advice for hot weather Resources 04 July 2025 Protect Your Health During Wildfires