A member of a mobile Sleeping Sickness screening team checks a girl's lymph glands. Swollen glands are an indication of Sleeping Sickness. Screening is the only way to reduce the incidence of the disease. Once people are tested positive they are taken to the Sleeping Sickness hospital in Yei. Sleeping sickness is a daily threat to more than 60 million men, women and children in 36 countries of sub-Saharan Africa, 22 of which are among the least developed countries in the world. The estimated number of people thought to have the disease is between 300 000 and 500 000 and the majority of these will die without ever having been diagnosed. The disease is a major obstacle to the development of entire regions, decreasing the labour force, hampering production and the capacity to work.