On 2020-12-28 a superspreading event most likely occurred in Midtjylland. 7 days later (2021-01-04) it started to super-spread through the community. A total of 44 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 195 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, 7 days after it started, with 3065 sequences found in total.
The last sequence of the superspreading event was collected on 2021-02-01.