On 2021-02-04 a superspreading event most likely occurred in Norway. 11 days later (2021-02-15) it started to super-spread through the community. A total of 41 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 422 genomes that are one-step mutation with respect to the core genome (a proxy for secondary transmissions). The signature for the likely superspreading event ends at about 2021-02-21, 17 days after it started, with 5078 sequences found in total.
The last sequence of the superspreading event was collected on 2021-05-06.
The sequence of this event has been classified as Alpha.