On 2020-12-07 a superspreading event most likely occurred in Denmark. 28 days later (2021-01-04) it started to super-spread through the community. A total of 42 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 77 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 2021-01-04, 28 days after it started, with 30572 sequences found in total.
The last sequence of the superspreading event was collected on 2021-02-15.