Introduction and rapid spread of SARS-CoV-2 Omicron variant and the dynamics of its sub-lineages BA.1 and BA.1.1, December 2021, Finland

Hanna Vauhkonen, Phuoc Truong,Ravi Kant, Ilja Plyusnin,Mert Erdin,Satu Kurkela,Hanna Liimatainen,Niina Ikonen,Soile Blomqvist, Kiirsi Liitsola,Erika Lindh,Otto Helve,Hanna Jarva, Raisa Longinov, Aino Palva,Tiina Hannunen,Sari Hannula, Mikko Parry, Paula Kauppi,Antti Vaheri,Tarja Sironen,Maija Lappalainen, Carita Savolainen-Kopra,Teemu Smura,Olli Vapalahti

Research Square (Research Square)（2022）

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摘要

Abstract Multiple introductions of SARS-COV-2 Omicron variant BA.1. and BA.1.1. lineages to Finland were detected early December 2021, and comprised the majority over Delta variant in 3 weeks in the capital region. Our sequence analysis demonstrates emergence of a large cluster of BA.1.1 in community transmission.

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sars-cov,sub-lineages

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