1.
Emerg Infect Dis
; 28(6): 1229-1232, 2022 06.
Article
in English
| MEDLINE | ID: covidwho-1775623
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.
Subject(s)
COVID-19 , SARS-CoV-2 , COVID-19/epidemiology , Finland/epidemiology , Humans , SARS-CoV-2/genetics
2.
Emerg Infect Dis
; 27(12): 3137-3141, 2021 12.
Article
in English
| MEDLINE | ID: covidwho-1496966
ABSTRACT
Severe acute respiratory syndrome coronavirus 2 Alpha and Beta variants became dominant in Finland in spring 2021 but had diminished by summer. We used phylogenetic clustering to identify sources of spreading. We found that outbreaks were mostly seeded by a few introductions, highlighting the importance of surveillance and prevention policies.