Fig. 2

The proportions of countries implementing NPIs in each group by region. Colours indicate different NPI groups: dark blue—internal containment and closure, red—international travel restrictions, green—economic measures, and light blue—health system policies; n values represent the total number of countries in each World Bank region; the y-axis shows the proportion of countries implementing NPIs per category, e.g. one means every country in the region is implementing some measures from the NPI group. The turning point of 13 April is shown as a dotted-and-dashed vertical line.