File:Buruli Ulcer Cases 2018 Colors.svg
Shading is in four levels:
1-150 cases - Yellow
151-300 cases - Orange
301-450 cases - Light red
451+ - Dark red (applies only to Ghana's 630 cases).
Data from the WHO Global Health Observatory, https://apps.who.int/gho/data/node.main.A1631
Map from File:BlankMap-Africa.svg, which is in the public domain. Shading is own work.