A community health worker marks a household as having been completed on the first day of the second cycle of a nationwide Seasonal Chemo Prophylactic (CPS) campaign to reduce the prevalence of malaria in children under five years of age Burkina Faso is one of the ten countries the most affected by malaria in the world. Malaria is the country's deadliest disease. The CPS campaign is supported by The Global Fund among other partners. Goundri, Ziniaré district, Burkina Faso. 20/08/2019.