COVID-19 Variants : UK, South Africa, Japan
https://www.who.int/csr/don/31-december-2020-sars-cov2-variants/en/
https://www.who.int/csr/don/21-december-2020-sars-cov2-variant-united-kingdom/en/
https://www.who.int/csr/don/archive/year/2020/en/
https://www.gisaid.org/epiflu-applications/hcov-19-reference-sequence/
https://en.wikipedia.org/wiki/Variant_of_Concern_202012/01