Highlight countries that…
AI
Made with AI. This atlas was compiled with the help of AI from public sources (World Bank, WHO, published indices and reference tables). Figures can be outdated, simplified or wrong — double-check them with the original source before making important decisions.
Body & Health
Blood type O
Share of people with blood group O (the universal red-cell donor when Rh−).
Source: Wikipedia: Blood type distribution by country