1. World Health Organisation. Classification of Omicron (B.1.1.529): SARS-CoV-2 Variant of Concern. Available: https://www.who.int/news/item/26-11-2021-classification-of-omicron-(b.1.1.529)-sars-cov-2-variant-of-concern
2. Department of Health and Social Care. Press release: First UK cases of Omicron variant identified (published 27 November 2021). Available: https://www.gov.uk/government/news/first-uk-cases-of-omicron-variant-identified
3. World Health Organisation. COVID-19 Weekly Epidemiological Update Edition 70, published 14 December 2021. Available: https://www.who.int/docs/default-source/coronaviruse/situation-reports/20211214_weekly_epi_update_70.pdf?sfvrsn=ad19bf83_3
4. UK Health Security Agency. SARS-CoV-2 variants of concern and variants under investigation in England: Technical briefing 31 (published 10 December 2021). Available: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1042367/technical_briefing-31-10-december-2021.pdf
5. Network for Genomic Surveillance South Africa (NGS-SA). SARS-CoV-2 Sequencing Update 25 November 2021. Available: https://www.krisp.org.za/manuscripts/25Nov2021_B.1.1.529_Media.pdf