Superspread event
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On 2020-10-27 a superspreading event most likely occurred in Wisconsin. 0 days later (2020-10-27) it started to super-spread through the community. A total of 35 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 31 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 2020-11-02, 6 days after it started, with 404 sequences found in total.
The last sequence of the superspreading event was collected on 2020-11-09.