Worms
Worms infect more than one third of the world's population, with the most intense infections occurring in children and the poor. School-age children typically have the highest burden of worm infection of any age group with an estimated 400 million worldwide suffering from soil-transmitted helminths and schistosomiasis. Chronic worm infections can negatively affect all aspects of a child's development: their health, nutrition, cognitive development, learning and educational access and achievement.
For more information on Worms search for Country Programmes on Deworming, articles in the Worm Bibliography and Worm Document Downloads or go to Why deworm in schools?