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. 2021 Jan 8:eabf2946. doi: 10.1126/science.abf2946

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Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).

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Fig. 1 — (A) Collection dates of the 50,887 genomes analyzed here (left-hand axis). Genomes are colored by sampling location (England = red, Scotland = dark blue, Wales = yellow, Northern Ireland = light blue, elsewhere = grey). The solid line shows the cumulative number of UK virus genomes (right-hand axis). The dashed and dotted lines show, respectively, the cumulative number of laboratory-confirmed UK cases (by specimen date) and the estimated number of UK infections (18); grey shading = 95% CI; right-hand axis). Due to retrospective screening, the cumulative number of genomes early in the epidemic exceeds that of confirmed cases. (B) Proportion of weekly estimated UK infections (18) included in our genome sequence dataset.