Introduction and Rapid Spread of SARS-CoV-2 Omicron Variant and Dynamics of BA.1 and BA.1.1 Sublineages, Finland, December 2021.
Hanna Vauhkonen, Phuoc Truong Nguyen, Ravi Kant, Ilja Plyusnin, Mert Erdin, Satu Kurkela, Hanna Liimatainen, Niina Ikonen, Soile Blomqvist, Kirsi Liitsola, Erika Lindh, Otto Helve, Hanna Jarva, Raisa Loginov, Aino Palva, Tiina Hannunen, Sari Hannula, Mikko Parry, Paula Kauppi, Antti Vaheri, Tarja Sironen, Maija Lappalainen, Carita Savolainen-Kopra, Teemu Smura, Olli Vapalahti
Emerging infectious diseases 2022 JunMultiple introductions of SARS-COV-2 Omicron variant BA.1 and BA.1.1. lineages to Finland were detected in early December 2021. Within 3 weeks, Omicron overtook Delta as the most common variant in the capital region. Sequence analysis demonstrated the emergence and spread through community transmission of a large cluster of BA.1.1 virus.
Citation
Hanna Vauhkonen, Phuoc Truong Nguyen, Ravi Kant, Ilja Plyusnin, Mert Erdin, Satu Kurkela, Hanna Liimatainen, Niina Ikonen, Soile Blomqvist, Kirsi Liitsola, Erika Lindh, Otto Helve, Hanna Jarva, Raisa Loginov, Aino Palva, Tiina Hannunen, Sari Hannula, Mikko Parry, Paula Kauppi, Antti Vaheri, Tarja Sironen, Maija Lappalainen, Carita Savolainen-Kopra, Teemu Smura, Olli Vapalahti. Introduction and Rapid Spread of SARS-CoV-2 Omicron Variant and Dynamics of BA.1 and BA.1.1 Sublineages, Finland, December 2021. Emerging infectious diseases. 2022 Jun;28(6):1229-1232
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PMID: 35378057
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