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Volume 28, Number 6—June 2022
Dispatch

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

Hanna VauhkonenComments to Author , 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, and Olli VapalahtiComments to Author 
Author affiliations: University of Helsinki, Helsinki, Finland (H. Vauhkonen, P. Truong Nguyen, R. Kant, I. Plyusnin, M. Erdin, A. Vaheri, T. Sironen, T. Smura, O. Vapalahti); University of Helsinki and Helsinki University Hospital, Uusimaa, Finland (S. Kurkela, H. Liimatainen, R. Loginov, M. Parry, P. Kauppi, M. Lappalainen, T. Smura, O. Vapalahti); Finnish Institute for Health and Welfare (THL), Helsinki (N. Ikonen, S. Blomqvist, K. Liitsola, E. Lindh, O. Helve, C. Savolainen-Kopra); Institute for Molecular Medicine Finland (FIMM), Helsinki (A. Palva, T. Hannunen, S. Hannula)

Main Article

Table

Patient data for 979 sequenced Omicron genomes in investigation of SARS-CoV-2 Omicron variant and dynamics of BA.1 and BA.1.1 sublineages, Finland, December 2021*

Variables
 No. (%)†
Sex
M 513 (52.4)
F
 466 (47.6)
Travel
Abroad 57 (5.8)
Border‡ 20 (2.0)
Finland 234 (23.9)
Border‡ 6 (0.6)
NA§ 688 (70.3)
Border‡
 107 (10.9)
Age, y
Range 0–98
Mean 36.2
Median
 34
Sample origin
HUS 662 (79.7)
Non-HUS total¶ 169 (20.3)
Non-HUS by district, no.
Central Finland Health Care District 6
Central Ostrobothnia Hospital District 6
East Savo Hospital District 3
Hospital District of South Ostrobothnia 10
Hospital District of Southwest Finland 18
Kainuu Social and Health Care Joint Authority 5
Tavastia Proper Hospital District 3
Kymenlaakso Social and Health Services 7
Lapland Hospital District 4
North Karelia Social and Health Care Authority 17
North Ostrobothnia Hospital District 15
North Savo Hospital District 12
Pirkanmaa Hospital District 10
Päijät-Häme Hospital District 3
Satakunta Hospital District 20
South Karelia Social and Health Care District 12
South Savo Social and Health Care Authority 5
Vaasa Hospital District 6
Åland Hospital District
 7
Other sample origin
HUH 15 (1.5)
Border
 133 (13.6)

*NA, not available; HUH, Helsinki University Hospital; HUS, Helsinki and Uusimaa Hospital District; Non-HUS, hospital district other than HUS. †Unless otherwise indicated. ‡Border, samples collected from border entry (airports, harbors, and land). §Travel data not available, probably originating from Finland. ¶Other, sample collection based on other than hospital districts.

Main Article

Page created: March 31, 2022
Page updated: May 22, 2022
Page reviewed: May 22, 2022
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