For millions of Africans, the social situation is dire. Over half of the population of Sub-Sahara Africa do not have access to improved sanitation facilities, and about a quarter are undernourished. If factors such as armed conflicts in the region, the impact of climate change, or the widespread presence of a broad range of infectious agents are considered, it shows a large number of Africans living in very fragile circumstances, highly vulnerable to any kind of shock or rapid change. Small, informal community groups deliver the majority of social protection services in Africa, but most of...