The left chart illustrates the share of the population that have received one dose of a COVID-19 vaccine. This shows the variation in the vaccination programs of different countries. This divergence could be due to the supply of vaccines or demand from a hesitant public. A highly immunized population, either via vaccination or infection, is key to successful economic re-opening and a sustained recovery. On the right, the line shows the daily increase in infections in four key regions, adjusted for population. It is important to monitor the effectiveness of vaccines in economies such as the U.S. and Europe, who have a relatively higher percentage of population having been immunized.