Select multiple countries from the dropdown bar and click the first button to plot the daily confirmed cases per million for the different countries. To find other countries with curves similar to the selected countries, press the second button. For each country selected, this displays two other countries with curves most similar to it. We measure similarity by computing the mean squared difference between all other countries who have had outbreaks at least as long as the selected country. Hence, this notion of similiarity is not symmetric. The nearest countries appear in sorted order in the legend on the right.
Data (used to be) updated in real-time with the most recent COVID-19 data.