Soil-transmitted helminthiasis

Soil-transmitted helminth infections affect the poorest and most deprived communities. They are transmitted by eggs present in human faeces which in turn contaminate soil in areas where sanitation is poor.

The main species that infect people are the roundworm (Ascaris lumbricoides), the whipworm (Trichuris trichiura) and the hookworms (Necator americanus and Ancylostoma duodenale).

Intestinal worms produce a wide range of symptoms including intestinal manifestations (diarrhoea, abdominal pain), general malaise and weakness. Hookworms cause chronic intestinal blood loss that result in anaemia.

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Region Country Program stage Yearssort ascending Maps Data
Western Africa Liberia Mapping Surveys (Hookworms) Download map png Download map
Central Africa Angola Mapping Surveys (Hookworms) Download map png Download map
Western Africa Mali Mapping Surveys (Ascaris) Download map png Download map
Southern Africa South Africa Mapping Surveys (Ascaris) Download map png Download map
Central Africa Sao Tome & Principe Mapping Surveys (T. trichiura) Download map png Download map
Southern Africa Botswana Mapping Surveys (Hookworms) Download map png Download map
Eastern Africa Ethiopia Mapping Surveys (All species) Download map png Download map
Western Africa Benin Mapping Surveys (All species) Download map png Download map
Western Africa Mali Mapping Surveys (Hookworms) Download map png Download map
Western Africa Burkina Faso Mapping Surveys (Hookworms) Download map png Download map
Central Africa Gabon Mapping Surveys (All species) Download map png Download map
Eastern Africa Uganda Mapping Surveys (Ascaris) Download map png Download map
Southern Africa Lesotho Mapping Surveys (T. trichiura) Download map png Download map
Eastern Africa Madagascar Mapping Surveys (T. trichiura) Download map png Download map
Western Africa The Gambia Mapping Surveys (Ascaris) Download map png Download map
Western Africa Mauritania Mapping Surveys (Hookworms) Download map png Download map
Southern Africa Lesotho Mapping Surveys (All species) Download map png Download map
Western Africa Senegal Mapping Surveys (Ascaris) Download map png Download map
Eastern Africa Comoros Mapping Surveys (Ascaris) Download map png Download map
Western Africa Senegal Mapping Surveys (Hookworms) Download map png Download map
Eastern Africa Comoros Mapping Surveys (Hookworms) Download map png Download map
Central Africa Cameroon Mapping Surveys (All species) Download map png Download map
Southern Africa Zimbabwe Mapping Surveys (Ascaris) Download map png Download map
Southern Africa Namibia Mapping Surveys (T. trichiura) Download map png Download map
Western Africa Cape Verde Mapping Surveys (T. trichiura) Download map png Download map
Southern Africa Zimbabwe Mapping Surveys (Hookworms) Download map png Download map
Southern Africa Namibia Mapping Surveys (All species) Download map png Download map
Eastern Africa Tanzania (Zanzibar) Mapping Surveys (All species) Download map png Download map
Southern Africa Botswana Mapping Surveys (Ascaris) Download map png Download map
Eastern Africa Ethiopia Mapping Surveys (T. trichiura) Download map png Download map
Western Africa Liberia Mapping Surveys (Ascaris) Download map png Download map
Central Africa Central African Republic Mapping Surveys (Ascaris) Download map png Download map
Western Africa Ghana Mapping Surveys (T. trichiura) Download map png Download map
Western Africa Nigeria Mapping Surveys (T. trichiura) Download map png Download map
Western Africa Sierra Leone Mapping Surveys (Hookworms) Download map png Download map
Western Africa Niger Mapping Surveys (All species) Download map png Download map
Western Africa Mauritania Mapping Surveys (Ascaris) Download map png Download map
Central Africa Burundi Mapping Surveys (T. trichiura) Download map png Download map
Western Africa Benin Mapping Surveys (T. trichiura) Download map png Download map
Central Africa Central African Republic Mapping Surveys (Hookworms) Download map png Download map
Western Africa Algeria Mapping Surveys (All species) Download map png Download map
Western Africa Nigeria Mapping Surveys (All species) Download map png Download map
Central Africa Cameroon Mapping Surveys (T. trichiura) Download map png Download map
Western Africa The Gambia Mapping Surveys (All species) Download map png Download map
Central Africa Chad Mapping Surveys (Hookworms) Download map png Download map
Southern Africa Zimbabwe Mapping Surveys (All species) Download map png Download map
Central Africa Republic of Congo Mapping Surveys (Ascaris) Download map png Download map
Eastern Africa Tanzania (Zanzibar) Mapping Surveys (Ascaris) Download map png Download map

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