High Risk GroupsSchistosomiasis is widespread among the poor populations in less developed countries, who live in conditions that favour transmission and who have no access to proper health care or effective prevention measures. The occurrence is particularly linked to agricultural and water development schemes, plus the African Lakes and rivers. Infection is predominant in school age children, in special occupation groups (fishermen, irrigation workers, farmers) and in females and other groups using infested water for their domestic purposes. Children swimming are at particularly high risk, because of their prolonged and complete body exposure.
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