Mapping Surveys

Here we collate available site-level pre-control mapping data for each of the five PC-NTDs (lymphatic filariasis, onchocerciasis, soil-transmitted helminthiasis, schistosomiasis and trachoma), including both national mapping surveys and robust population-based prevalence data from research studies. Loiasis mapping survey data are also available. Loiasis was mapped in order to identify areas where mass administration of ivermectin is not recommended, or should be undertaken after precautionary measures have been put in place.

The assembled data can be used to determine the graphical distribution of transmission, to estimate the burden of disease, and to identify implementation units where preventive chemotherapy is required. They also help to highlight where further survey data are required. Mapping survey data also provide a baseline against which to measure the impact of control efforts.

The WHO provides a number of operational guidelines and standardised methodologies for conducting mapping surveys: to learn more, please visit the Resources page.

78 maps found
Disease Region Type Years Maps Data
Lymphatic filariasis Eastern Africa 1921 - 2016 Download map
Lymphatic filariasis Western Africa 1921 - 2016 Download map
Lymphatic filariasis Southern Africa 1921 - 2016 Download map
Lymphatic filariasis Central Africa 1921 - 2016 Download map
Lymphatic filariasis WHO African Region (AFRO) 1921 - 2016 Download map
Lymphatic filariasis Africa Continent 1921 - 2016 Download map
Onchocerciasis Western Africa Anti-Ov16 test 2015 Download map
Loiasis WHO African Region (AFRO) Blood smear 2015 Download map
Loiasis Southern Africa Blood smear 2015 Download map
Loiasis Eastern Africa Blood smear 2015 Download map
Loiasis Africa Continent Blood smear 2015 Download map
Onchocerciasis WHO African Region (AFRO) Anti-Ov16 test 2015 Download map
Loiasis Central Africa Blood smear 2015 Download map
Onchocerciasis Africa Continent Anti-Ov16 test 2015 Download map
Onchocerciasis Eastern Africa Anti-Ov16 test 2015 Download map
Loiasis Western Africa Blood smear 2015 Download map
Onchocerciasis Central Africa Anti-Ov16 test 2015 Download map
Onchocerciasis Southern Africa Anti-Ov16 test 2015 Download map
Onchocerciasis Western Africa Skin Biopsy 2012 - 2015 Download map
Onchocerciasis Central Africa Skin Biopsy 2012 - 2015 Download map
Onchocerciasis WHO African Region (AFRO) Skin Biopsy 2012 - 2015 Download map
Onchocerciasis Southern Africa Skin Biopsy 2012 - 2015 Download map
Onchocerciasis Africa Continent Skin Biopsy 2012 - 2015 Download map
Onchocerciasis Eastern Africa Skin Biopsy 2012 - 2015 Download map
Loiasis Eastern Africa EWH-Questionnaire 2000 - 2014 Download map
Loiasis Africa Continent EWH-Questionnaire 2000 - 2014 Download map
Loiasis WHO African Region (AFRO) EWH-Questionnaire 2000 - 2014 Download map
Loiasis Central Africa EWH-Questionnaire 2000 - 2014 Download map
Loiasis Southern Africa EWH-Questionnaire 2000 - 2014 Download map
Loiasis Western Africa EWH-Questionnaire 2000 - 2014 Download map
Onchocerciasis Western Africa Nodule Palpation 1989 - 2014 Download map
Onchocerciasis WHO African Region (AFRO) Nodule Palpation 1989 - 2014 Download map
Onchocerciasis Southern Africa Nodule Palpation 1989 - 2014 Download map
Onchocerciasis Africa Continent Nodule Palpation 1989 - 2014 Download map
Onchocerciasis Eastern Africa Nodule Palpation 1989 - 2014 Download map
Onchocerciasis Central Africa Nodule Palpation 1989 - 2014 Download map
Soil-transmitted helminthiasis WHO African Region (AFRO) Ascaris Download map
Soil-transmitted helminthiasis Central Africa All species Download map
Soil-transmitted helminthiasis Southern Africa All species Download map
Soil-transmitted helminthiasis Africa Continent All species Download map
Soil-transmitted helminthiasis Central Africa Ascaris Download map
Soil-transmitted helminthiasis WHO African Region (AFRO) All species Download map
Soil-transmitted helminthiasis Southern Africa Trichuris Download map
Soil-transmitted helminthiasis Africa Continent Ascaris Download map
Soil-transmitted helminthiasis Eastern Africa Hookworms Download map
Schistosomiasis Western Africa All species Download map
Soil-transmitted helminthiasis WHO African Region (AFRO) Hookworms Download map
Soil-transmitted helminthiasis Western Africa Trichuris Download map
Soil-transmitted helminthiasis Southern Africa Ascaris Download map
Soil-transmitted helminthiasis Africa Continent Hookworms Download map
Soil-transmitted helminthiasis Eastern Africa Trichuris Download map
Schistosomiasis Western Africa S. mansoni Download map
Soil-transmitted helminthiasis WHO African Region (AFRO) Trichuris Download map
Soil-transmitted helminthiasis Western Africa Hookworms Download map
Soil-transmitted helminthiasis Southern Africa Hookworms Download map
Soil-transmitted helminthiasis Africa Continent Trichuris Download map
Schistosomiasis Eastern Africa S. haematobium Download map
Schistosomiasis Western Africa S. haematobium Download map
Soil-transmitted helminthiasis Western Africa All species Download map
Schistosomiasis Central Africa S. mansoni Download map
Soil-transmitted helminthiasis Western Africa Ascaris Download map
Schistosomiasis Southern Africa All species Download map
Schistosomiasis Africa Continent S. haematobium Download map
Schistosomiasis Eastern Africa All species Download map
Schistosomiasis WHO African Region (AFRO) S. haematobium Download map
Schistosomiasis Central Africa S. haematobium Download map
Schistosomiasis Southern Africa S. mansoni Download map
Schistosomiasis Africa Continent All species Download map
Schistosomiasis Eastern Africa S. mansoni Download map
Soil-transmitted helminthiasis Central Africa Hookworms Download map
Schistosomiasis WHO African Region (AFRO) All species Download map
Schistosomiasis Central Africa All species Download map
Schistosomiasis Southern Africa S. haematobium Download map
Schistosomiasis Africa Continent S. mansoni Download map
Soil-transmitted helminthiasis Eastern Africa All species Download map
Soil-transmitted helminthiasis Central Africa Trichuris Download map
Schistosomiasis WHO African Region (AFRO) S. mansoni Download map
Soil-transmitted helminthiasis Eastern Africa Ascaris Download map
414 maps found
Disease Region Location Type Years Maps Data
Lymphatic filariasis Eastern Africa South Sudan 2009 - 2016 Download map
Lymphatic filariasis Central Africa Angola 1966 - 2016 Download map
Lymphatic filariasis Central Africa Sao Tome & Principe 2015 Download map
Loiasis Central Africa Cameroon Blood smear 2015 Download map
Onchocerciasis Central Africa Gabon Anti-Ov16 test 2015 Download map
Loiasis Central Africa Democratic Republic of the Congo Blood smear 2015 Download map
Onchocerciasis Central Africa Democratic Republic of the Congo Anti-Ov16 test 2015 Download map
Loiasis Western Africa Nigeria Blood smear 2015 Download map
Onchocerciasis Central Africa Angola Skin Biopsy 2015 Download map
Loiasis Central Africa Equatorial Guinea Blood smear 2015 Download map
Loiasis Central Africa Gabon Blood smear 2015 Download map
Lymphatic filariasis Southern Africa Botswana 2015 Download map
Onchocerciasis Western Africa Nigeria Skin Biopsy 2015 Download map
Lymphatic filariasis Western Africa Mauritania 2015 Download map
Onchocerciasis Western Africa Nigeria Anti-Ov16 test 2015 Download map
Onchocerciasis Central Africa Gabon Skin Biopsy 2014 - 2015 Download map
Onchocerciasis Central Africa Democratic Republic of the Congo Skin Biopsy 2014 - 2015 Download map
Onchocerciasis Central Africa Republic of Congo Skin Biopsy 2014 - 2015 Download map
Onchocerciasis Central Africa Equatorial Guinea Skin Biopsy 2013 - 2015 Download map
Lymphatic filariasis Central Africa Republic of Congo 2008 - 2015 Download map
Lymphatic filariasis Central Africa Chad 1970 - 2015 Download map
Lymphatic filariasis Eastern Africa Madagascar 1950 - 2015 Download map
Lymphatic filariasis Central Africa Democratic Republic of the Congo 1946 - 2015 Download map
Onchocerciasis Western Africa Cote d’Ivoire Skin Biopsy 2014 Download map
Onchocerciasis Western Africa Cote d’Ivoire Nodule Palpation 2014 Download map
Onchocerciasis Eastern Africa Tanzania (Mainland) Skin Biopsy 2014 Download map
Onchocerciasis Central Africa Chad Skin Biopsy 2013 - 2014 Download map
Onchocerciasis Eastern Africa Ethiopia Skin Biopsy 2012 - 2014 Download map
Lymphatic filariasis Central Africa Gabon 2008 - 2014 Download map
Loiasis Western Africa Nigeria EWH-Questionnaire 2002 - 2014 Download map
Onchocerciasis Central Africa Democratic Republic of the Congo Nodule Palpation 2000 - 2014 Download map
Onchocerciasis Central Africa Gabon Nodule Palpation 1999 - 2014 Download map
Lymphatic filariasis Western Africa Cote d’Ivoire 1965 - 2014 Download map
Lymphatic filariasis Southern Africa Zimbabwe 1958 - 2014 Download map
Onchocerciasis Central Africa Cameroon Skin Biopsy 2013 Download map
Onchocerciasis Central Africa Burundi Skin Biopsy 2013 Download map
Onchocerciasis Central Africa Chad Nodule Palpation 2013 Download map
Onchocerciasis Central Africa Burundi Nodule Palpation 2001 - 2013 Download map
Onchocerciasis Central Africa Equatorial Guinea Nodule Palpation 1999 - 2013 Download map
Onchocerciasis Central Africa Cameroon Nodule Palpation 1993 - 2013 Download map
Lymphatic filariasis Eastern Africa Ethiopia 1971 - 2013 Download map
Lymphatic filariasis Central Africa Cameroon 1957 - 2013 Download map
Lymphatic filariasis Western Africa Nigeria 1900 - 2013 Download map
Onchocerciasis Eastern Africa Ethiopia Nodule Palpation 2001 - 2012 Download map
Onchocerciasis Eastern Africa Tanzania (Mainland) Nodule Palpation 1996 - 2012 Download map
Lymphatic filariasis Western Africa Burkina Faso 1965 - 2012 Download map
Lymphatic filariasis Western Africa Niger 1954 - 2012 Download map
Lymphatic filariasis Western Africa Liberia 1947 - 2012 Download map
Lymphatic filariasis Eastern Africa Tanzania (Mainland) 1925 - 2012 Download map
Loiasis Central Africa Angola EWH-Questionnaire 2003 - 2011 Download map
Lymphatic filariasis Southern Africa Zambia 2003 - 2011 Download map
Onchocerciasis Central Africa Angola Nodule Palpation 2002 - 2011 Download map
Onchocerciasis Western Africa Nigeria Nodule Palpation 1989 - 2011 Download map
Loiasis Central Africa Gabon EWH-Questionnaire 2010 Download map
Loiasis Central Africa Chad EWH-Questionnaire 2010 Download map
Loiasis Central Africa Central African Republic EWH-Questionnaire 2010 Download map
Loiasis Central Africa Democratic Republic of the Congo EWH-Questionnaire 2004 - 2010 Download map
Loiasis Central Africa Republic of Congo EWH-Questionnaire 2004 - 2010 Download map
Loiasis Central Africa Cameroon EWH-Questionnaire 2000 - 2010 Download map
Lymphatic filariasis Eastern Africa Uganda 1998 - 2010 Download map
Lymphatic filariasis Western Africa Senegal 1950 - 2010 Download map
Lymphatic filariasis Eastern Africa Kenya 1921 - 2010 Download map
Lymphatic filariasis Central Africa Central African Republic 2008 - 2009 Download map
Loiasis Central Africa Equatorial Guinea EWH-Questionnaire 2008 Download map
Lymphatic filariasis Eastern Africa Rwanda 2008 Download map
Onchocerciasis Eastern Africa Uganda Nodule Palpation 2008 Download map
Loiasis Eastern Africa South Sudan EWH-Questionnaire 2005 - 2008 Download map
Lymphatic filariasis Central Africa Equatorial Guinea 2003 - 2008 Download map
Onchocerciasis Eastern Africa South Sudan Nodule Palpation 1996 - 2008 Download map
Lymphatic filariasis Central Africa Burundi 2007 Download map
Onchocerciasis Southern Africa Mozambique Nodule Palpation 2001 - 2007 Download map
Lymphatic filariasis Southern Africa Mozambique 1957 - 2006 Download map
Lymphatic filariasis Western Africa Cape Verde 2005 Download map
Lymphatic filariasis Western Africa Guinea 1954 - 2005 Download map
Lymphatic filariasis Western Africa Sierra Leone 1922 - 2005 Download map
Lymphatic filariasis Western Africa Guinea-Bissau 2004 Download map
Lymphatic filariasis Mali 1968 - 2004 Download map
Lymphatic filariasis Eastern Africa Tanzania (Zanzibar) 1930 - 2004 Download map
Onchocerciasis Central Africa Republic of Congo Nodule Palpation 2003 Download map
Loiasis Eastern Africa Ethiopia EWH-Questionnaire 2002 - 2003 Download map
Lymphatic filariasis Southern Africa Malawi 2000 - 2003 Download map
Lymphatic filariasis Western Africa Ghana 1994 - 2002 Download map
Lymphatic filariasis Western Africa Togo 1968 - 2002 Download map
Lymphatic filariasis Western Africa The Gambia 1950 - 2002 Download map
Onchocerciasis Central Africa Central African Republic Nodule Palpation 1999 - 2001 Download map
Lymphatic filariasis Western Africa Benin 1954 - 2000 Download map
Onchocerciasis Southern Africa Malawi Nodule Palpation 1998 Download map
Onchocerciasis Western Africa Liberia Nodule Palpation 1998 Download map
Lymphatic filariasis Eastern Africa Comoros 1969 - 1982 Download map
Lymphatic filariasis Eastern Africa Seychelles 1970 Download map
Soil-transmitted helminthiasis Western Africa Mauritania All species Download map
Soil-transmitted helminthiasis Eastern Africa Madagascar Hookworms Download map
Schistosomiasis Western Africa Togo S. mansoni Download map
Soil-transmitted helminthiasis Western Africa Algeria Hookworms Download map
Schistosomiasis Western Africa The Gambia All species Download map
Schistosomiasis Western Africa Mauritania S. haematobium Download map
Soil-transmitted helminthiasis Eastern Africa Tanzania (Mainland) Trichuris Download map
Soil-transmitted helminthiasis Central Africa Sao Tome & Principe All species Download map
Soil-transmitted helminthiasis Central Africa Cameroon Ascaris Download map
Soil-transmitted helminthiasis Southern Africa eSwatini Ascaris Download map

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