On 2020-07-01 a superspreading event most likely occurred in Texas. 97 days later (2020-10-06) 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 257 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 2020-10-13, 104 days after it started, with 23412 sequences found in total.
The last sequence of the superspreading event was collected on 2021-03-03.