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Number of countries included by the World Health Organization (WHO) region and World Bank income group.
| Region | Number of Countries |
|---|---|
| East Asia and Pacific | 9 |
| Europe and Central Asia | 11 |
| Latin America and Caribbean | 15 |
| Middle East and North Africa | 5 |
| South Asia | 4 |
| Sub-Saharan Africa | 24 |
| World Bank income group | Number of countries |
| Low income | 17 |
| Lower middle income | 25 |
| Upper middle income | 26 |
