 Endemic diseases, such as sleeping sickness, were all but eliminated through large-scale and persistent campaigns.In 1925 medical missionary Dr. Arthur Lewis Piper was the first person to use and bring tryparsamide, the Rockefeller Foundation's drug to cure sleeping sickness, to the Congo.The health-care infrastructure expanded steadily throughout the colonial period, with a comparatively high availability of hospital beds relative to the population and with dispensaries set up in the most remote regions.