Fig. 2
From: COVID-19 seeding time and doubling time model: an early epidemic risk assessment tool
Epidemiologic curves of 30 countries used to determine seeding number (SN). All case report data through 31 March 2020 were used. Multiple researchers independently determined the epidemic “take-off” point (black circle) and date. The total cumulative cases on the day prior to the “take-off” date determined that country’s SN. The median SN for these 30 countries was used in the ST/DT Model