The Nikkei COVID-19 Recovery Index ranks more than 120 countries and regions on infection management, vaccine rollouts and social mobility at the end of each month. A higher ranking indicates that a country or region is closer to recovery with its low numbers of confirmed COVID-19 cases, better vaccination rates and/or less-stringent social distancing measures.
The index calculates a score between 0 and 90 for each country or region. The score is the sum of three constituent categories and nine subcategories as shown below:
Confirmed cases of COVID-19 versus peak case count;
Confirmed cases per capita;
Tests per case.
Total vaccine doses given per capita;
New vaccine doses given per capita;
Share of people who have received at least one dose.
Oxford stringency index;
Data sources of the index include Our World in Data; Google COVID-19 Community Mobility Reports; Oxford COVID-19 Government Response Tracker by Blavatnik School of Government, University of Oxford; Cirium, an aviation data and analytics company; and Orbital Insight, which analyzes satellite data.
Each subcategory has a maximum score of 10. Countries and regions are compared with one another for most of these subcategories. For example, in the "share of people who have received at least one dose" subcategory, if a country's or region's percentage is higher than 90% of all the countries, it gets a 10; if the percentage is higher than 80% of all the countries, it gets a 9; and so on.
Additional reporting by Nikkei staff writer Kenji Asada in Tokyo.