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. 2021 Jan 7;26(1):2002106. doi: 10.2807/1560-7917.ES.2020.26.1.2002106

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This article is copyright of the authors or their affiliated institutions, 2021.

This is an open-access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0) Licence. You may share and adapt the material, but must give appropriate credit to the source, provide a link to the licence, and indicate if changes were made.

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Observed daily number and weekly proportion of SARS-CoV-2 501N, 501Y Variant 1 and 501Y Variant 2^a sequences during their co-circulation, by dates of sampling, (A) United Kingdom, (B) England, (C) Wales, (D) Scotland and Northern Ireland, 22 September–1 December 2020