Emerg Infect Dis. 2021 Dec;27(12):3137-3141. doi: 10.3201/eid2712.211631. Epub 2021 Oct 28.
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.
2021 年春季，严重急性呼吸综合征冠状病毒 2 的 Alpha 和 Beta 变体在芬兰成为优势株，但到夏季时它们的优势已减弱。我们使用系统发育聚类来确定传播源。我们发现，疫情爆发大多是由少数几次传入引起的，这突显了监测和预防政策的重要性。
