On 2020-12-10 a superspreading event most likely occurred in England. 29 days later (2021-01-08) it started to super-spread through the community. A total of 54 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 144 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 2021-01-16, 37 days after it started, with 44413 sequences found in total.
The last sequence of the superspreading event was collected on 2021-01-19.
The sequence of this event has been classified as Alpha.