Worms infect more than one third of the world's population, with the most intense infections in children and the poor …. In the poorest countries, children are likely to be infected from the time they stop breast-feeding, and to be … continually infected and re-infected for the rest of their lives. Only rarely does infection have acute consequences for children …

will have lower returns if children do not have adequate levels of cognitive and social skills at an early age. This paper …-school age children, who are also more likely to be delayed. The program increased intake of nutrient-rich foods, early …

surviving children. Studies have found substantial variability across countries in the negative impacts of orphanhood on child …