Establishment and lineage dynamics of the SARS-CoV-2 epidemic in the UK.

Establishment and lineage dynamics of the SARS-CoV-2 epidemic in the UK.
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DOI:
10.1126/science.abf2946
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发表时间:
2021-02-12
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Pybus OG
Pybus OG
中科院分区:
其他
文献类型:
--
作者:
du Plessis L;McCrone JT;Zarebski AE;Hill V;Ruis C;Gutierrez B;Raghwani J;Ashworth J;Colquhoun R;Connor TR;Faria NR;Jackson B;Loman NJ;O'Toole Á;Nicholls SM;Parag KV;Scher E;Vasylyeva TI;Volz EM;Watts A;Bogoch II;Khan K;COVID-19 Genomics UK (COG-UK) Consortium;Aanensen DM;Kraemer MUG;Rambaut A;Pybus OG

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The UK’s COVID-19 epidemic during early 2020 was one of world’s largest and unusually well represented by virus genomic sampling. Here we reveal the fine-scale genetic lineage structure of this epidemic through analysis of 50,887 SARS-CoV-2 genomes, including 26,181 from the UK sampled throughout the country’s first wave of infection. Using large-scale phylogenetic analyses, combined with epidemiological and travel data, we quantify the size, spatio-temporal origins and persistence of genetically-distinct UK transmission lineages. Rapid fluctuations in virus importation rates resulted in >1000 lineages; those introduced prior to national lockdown tended to be larger and more dispersed. Lineage importation and regional lineage diversity declined after lockdown, while lineage elimination was size-dependent. We discuss the implications of our genetic perspective on transmission dynamics for COVID-19 epidemiology and control.
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