Fig 1.
Cumulative incidence of COVID-19 over a selected period in 15 countries in Western Europe (log scale).
For each country, a line has been added to the plot, whose intercept represents the center of gravity of the data, and whose slope represents the estimated exponential growth rate of the disease at the start of the outbreak. The selected period was different for each country, ranging from February 23 (day 1) to March 15 (day 22).
Table 1.