Fig. 2: COVID-19 vaccine doses administered per 100 people versus gross domestic product per capita.

Cumulative number of COVID-19 doses administered per 100 people, measured against gross domestic product (GDP) per capita. GDP per capita is adjusted for purchasing power parity and is measured in international dollars (Int$). Single doses are counted, and may not equal the total number of people vaccinated, depending on the specific dose regime (some people may have received multiple doses).