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

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 transmi...

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Published inEmerging Infectious Diseases
Main Authors Vauhkonen, Hanna, Truong, Phuoc, Kant, Ravi, Plyusnin, Ilja, Erdin, Mert, Kurkela, Satu, Liimatainen, Hanna, Ikonen, Niina, Blomqvist, Soile, Liitsola, Kiirsi, Lindh, Erika, Helve, Otto, Jarva, Hanna, Longinov, Raisa, Palva, Aino, Hannunen, Tiina, Hannula, Sari, Parry, Mikko, Kauppi, Paula, Vaheri, Antti, Sironen, Tarja, Lappalainen, Maija, Savolainen-Kopra, Carita, Smura, Teemu, Vapalahti, Olli
Format Web Resource
LanguageEnglish
Published Durham Research Square 23.03.2022
Subjects
Severe acute respiratory syndrome coronavirus 2
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DOI10.21203/rs.3.rs-1480433/v1

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Summary: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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DOI:10.21203/rs.3.rs-1480433/v1