Europe is the region with the world's largest proportion of older persons. Almost 1 in 4 Europeans – 24% of the continent’s total population of 850 million – is 60 years or older. Older adults are at significantly higher risk of severe illness and death from COVID-19. Some 95% of deaths occur in this age group. As the virus spreads across the continent, this map shows which countries have the highest proportion of people in this at-risk population group.