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

Journal ArticleOPEN ACCESS

Introduction and Rapid Spread of SARS-CoV-2 Omicron Variant and Dynamics of BA.1 and BA.1.1 Sublineages, Finland, December 2021

Vauhkonen H
Nguyen P
Kant R
et al.

Emerging Infectious Diseases (2022) 28(6) 1229-1232

DOI: 10.3201/eid2806.220515

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Abstract

Multiple 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.

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Vauhkonen, H., Nguyen, P. T., Kant, R., Plyusnin, I., Erdin, M., Kurkela, S., … Vapalahti, O. (2022). 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, 28(6), 1229–1232. https://doi.org/10.3201/eid2806.220515

Introduction and Rapid Spread of SARS-CoV-2 Omicron Variant and Dynamics of BA.1 and BA.1.1 Sublineages, Finland, December 2021

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