Onchocerciasis

Infection transmitted by the bite of infected blackflies causing severe itching and eye lesions as the adult worm produces larvae and leading to visual impairment and permanent blindness.

The filarial worms (O. volvulus) are transmitted by the repeated bites of infected black flies (Simulium spp.) . These black flies breed in fast-flowing rivers and streams, mostly in remote villages located near fertile land where people rely on agriculture.

In human, female adult worms produce embryonic larvae (microfilariae) that migrate to the skin, eyes and other organs. When a female black fly bites an infected person during a blood meal, it also ingests microfilariae which develop further into the infectious L3 stage and are then transmitted to the next human host during subsequent bites.

90 maps found
There are currently no regional maps for this Program stage
600 maps found
Region Location Program stage Years Maps Data
Eastern Africa Rwanda MDA/PC coverage (Geographic) 2014 Download map
Western Africa Guinea-Bissau MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2014 Download map
Eastern Africa Rwanda Mapping Surveys (Nodule Palpation) Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2016 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2015 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2013 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2014 Download map
Western Africa Guinea-Bissau MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Burundi MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Burundi MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Burundi MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Burundi MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Burundi MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Burundi Mapping Surveys (Nodule Palpation) 2001 - 2013 Download map
Central Africa Burundi MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Burundi MDA/PC coverage (Geographic) 2013 Download map
Central Africa Burundi MDA/PC coverage (Geographic) 2016 Download map
Central Africa Burundi MDA/PC coverage (Geographic) 2015 Download map
Central Africa Burundi 2017 Download map
Central Africa Burundi MDA/PC coverage (Geographic) 2014 Download map
Central Africa Burundi Impact Assessment (Skin Biopsy) Download map
Central Africa Burundi Mapping Surveys (Skin Biopsy) 2013 Download map
Western Africa Senegal 2017 Download map
Western Africa Guinea-Bissau 2017 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Liberia MDA/PC coverage (Geographic) 2013 Download map
Western Africa Liberia MDA/PC coverage (Geographic) 2016 Download map
Western Africa Liberia 2017 Download map
Western Africa Liberia MDA/PC coverage (Geographic) 2014 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Liberia MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Liberia MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Liberia MDA/PC coverage (Geographic) 2015 Download map
Western Africa Liberia Mapping Surveys (Nodule Palpation) 1998 Download map
Central Africa Equatorial Guinea Mapping Surveys (Nodule Palpation) 1999 - 2013 Download map
Western Africa Liberia Impact Assessment (Skin Biopsy) Download map
Central Africa Equatorial Guinea Mapping Surveys (Skin Biopsy) 2013 - 2015 Download map
Central Africa Equatorial Guinea MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Equatorial Guinea Impact Assessment (Skin Biopsy) Download map
Central Africa Equatorial Guinea MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2013 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2015 Download map
Central Africa Equatorial Guinea 2017 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2014 Download map
Southern Africa eSwatini MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Southern Africa eSwatini MDA/PC coverage (Therapeutic) 2013 Download map
Southern Africa eSwatini MDA/PC coverage (Therapeutic) 2014 Download map
Southern Africa eSwatini MDA/PC coverage (Therapeutic) 2016 Download map
Southern Africa eSwatini MDA/PC coverage (Therapeutic) 2015 Download map
Southern Africa eSwatini MDA/PC rounds (Geographic) 2013 - 2016 Download map
Southern Africa eSwatini MDA/PC coverage (Geographic) 2013 Download map
Southern Africa eSwatini 2017 Download map
Southern Africa eSwatini MDA/PC coverage (Geographic) 2016 Download map
Southern Africa eSwatini MDA/PC coverage (Geographic) 2015 Download map
Southern Africa eSwatini MDA/PC coverage (Geographic) 2014 Download map
Western Africa Sierra Leone MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Sierra Leone MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Sierra Leone MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Sierra Leone MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Sierra Leone MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Sierra Leone MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Sierra Leone MDA/PC coverage (Geographic) 2013 Download map
Western Africa Sierra Leone MDA/PC coverage (Geographic) 2016 Download map
Western Africa Sierra Leone MDA/PC coverage (Geographic) 2015 Download map
Western Africa Sierra Leone MDA/PC coverage (Geographic) 2014 Download map
Western Africa Sierra Leone 2017 Download map
Western Africa The Gambia MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa The Gambia MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa The Gambia MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa The Gambia MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa The Gambia MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa The Gambia MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa The Gambia MDA/PC coverage (Geographic) 2013 Download map
Western Africa The Gambia 2017 Download map
Western Africa The Gambia MDA/PC coverage (Geographic) 2016 Download map
Western Africa The Gambia MDA/PC coverage (Geographic) 2015 Download map
Western Africa The Gambia MDA/PC coverage (Geographic) 2014 Download map
Southern Africa Lesotho MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2013 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2014 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2015 Download map
Southern Africa Lesotho MDA/PC rounds (Geographic) 2013 - 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2013 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2016 Download map
Southern Africa Lesotho 2017 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2015 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2014 Download map
Eastern Africa Seychelles MDA/PC rounds (Therapeutic) 2013 - 2016 Download map

Pages

No results found.