On 2021-03-15 a superspreading event most likely occurred in North Rhine-Westphalia. 28 days later (2021-04-13) it started to super-spread through the community. A total of 31 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 252 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 2021-04-17, 32 days after it started, with 14990 sequences found in total.
The last sequence of the superspreading event was collected on 2021-05-11.
The sequence of this event has been classified as Alpha.