引言:2021 年 12 月,芬兰出现 SARS-CoV-2 奥密克戎变异株的引入和快速传播,以及 BA.1 和 BA.1.1 亚谱系的动态变化
Introduction and Rapid Spread of SARS-CoV-2 Omicron Variant and Dynamics of BA.1 and BA.1.1 Sublineages, Finland, December 2021.
出版信息
Emerg Infect Dis. 2022 Jun;28(6):1229-1232. doi: 10.3201/eid2806.220515. Epub 2022 Apr 4.
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.
2021 年 12 月初,芬兰检测到了 SARS-CoV-2 奥密克戎变异株 BA.1 和 BA.1.1 两个谱系的多次输入。在 3 周内,奥密克戎取代德尔塔成为首都地区最常见的变异株。序列分析表明,BA.1.1 病毒的一个大集群通过社区传播而出现并传播。