Superspread event
On 2020-03-08 a superspreading event most likely occurred in Hamburg. 2 days later (2020-03-10) it started to super-spread through the community. A total of 56 copies of this genome (that represents the core of the outbreak), were reported in Gisaid, a proxy for primary transmissions, along with 50 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 2020-03-18, 10 days after it started, with 505 sequences found in total.
The last sequence of the superspreading event was collected on 2020-03-27.