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 Locationsort descending Program stage Years Maps Data
Central Africa Equatorial Guinea MDA/PC rounds (Geographic) 1990 - 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2013 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Equatorial Guinea 2017 Download map
Eastern Africa Ethiopia Mapping Surveys (Skin Biopsy) 2012 - 2014 Download map
Eastern Africa Ethiopia MDA/PC rounds (Geographic) 1990 - 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2013 Download map
Eastern Africa Ethiopia 2017 Download map
Eastern Africa Ethiopia MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2014 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2013 Download map
Eastern Africa Ethiopia MDA/PC rounds (Geographic) 2013 - 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2015 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2015 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2014 Download map
Eastern Africa Ethiopia Impact Assessment (Skin Biopsy) Download map
Eastern Africa Ethiopia Mapping Surveys (Nodule Palpation) 2001 - 2012 Download map
Central Africa Gabon MDA/PC rounds (Geographic) 1990 - 2016 Download map
Central Africa Gabon MDA/PC coverage (Geographic) 2013 Download map
Central Africa Gabon MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Gabon Mapping Surveys (Anti-Ov16 test) 2015 Download map
Central Africa Gabon MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Gabon MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Gabon MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Gabon MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Gabon MDA/PC coverage (Geographic) 2015 Download map
Central Africa Gabon MDA/PC coverage (Geographic) 2016 Download map
Central Africa Gabon 2017 Download map
Central Africa Gabon MDA/PC coverage (Geographic) 2014 Download map
Central Africa Gabon Mapping Surveys (Nodule Palpation) 1999 - 2014 Download map
Central Africa Gabon Mapping Surveys (Skin Biopsy) 2014 - 2015 Download map
Central Africa Gabon MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Ghana MDA/PC rounds (Geographic) 1990 - 2016 Download map
Western Africa Ghana MDA/PC coverage (Geographic) 2013 Download map
Western Africa Ghana 2017 Download map
Western Africa Ghana MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Ghana MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Ghana MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Ghana MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Ghana MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Ghana MDA/PC coverage (Geographic) 2015 Download map
Western Africa Ghana MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Ghana MDA/PC coverage (Geographic) 2016 Download map
Western Africa Ghana MDA/PC coverage (Geographic) 2014 Download map
Western Africa Guinea MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Guinea MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Guinea MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Guinea 2017 Download map
Western Africa Guinea MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Guinea MDA/PC coverage (Geographic) 2015 Download map
Western Africa Guinea MDA/PC coverage (Geographic) 2016 Download map
Western Africa Guinea MDA/PC coverage (Geographic) 2014 Download map
Western Africa Guinea MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Guinea MDA/PC rounds (Geographic) 1990 - 2016 Download map
Western Africa Guinea MDA/PC coverage (Geographic) 2013 Download map
Western Africa Guinea MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2014 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2015 Download map
Western Africa Guinea-Bissau MDA/PC rounds (Geographic) 1990 - 2016 Download map
Western Africa Guinea-Bissau MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Geographic) 2013 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Guinea-Bissau MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Guinea-Bissau MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Guinea-Bissau 2017 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
Eastern Africa Kenya MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Eastern Africa Kenya MDA/PC coverage (Geographic) 2013 Download map
Eastern Africa Kenya MDA/PC rounds (Geographic) 1990 - 2016 Download map
Eastern Africa Kenya MDA/PC coverage (Therapeutic) 2014 Download map
Eastern Africa Kenya Mapping Surveys (Nodule Palpation) Download map
Eastern Africa Kenya MDA/PC coverage (Therapeutic) 2013 Download map
Eastern Africa Kenya 2017 Download map
Eastern Africa Kenya MDA/PC coverage (Therapeutic) 2016 Download map
Eastern Africa Kenya MDA/PC coverage (Therapeutic) 2015 Download map
Eastern Africa Kenya MDA/PC coverage (Geographic) 2016 Download map
Eastern Africa Kenya MDA/PC rounds (Geographic) 2013 - 2016 Download map
Eastern Africa Kenya MDA/PC coverage (Geographic) 2014 Download map
Eastern Africa Kenya MDA/PC coverage (Geographic) 2015 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2014 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2013 Download map
Southern Africa Lesotho MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Southern Africa Lesotho 2017 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2015 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2015 Download map
Southern Africa Lesotho MDA/PC coverage (Therapeutic) 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2014 Download map
Southern Africa Lesotho MDA/PC rounds (Geographic) 1990 - 2016 Download map
Southern Africa Lesotho MDA/PC coverage (Geographic) 2013 Download map
Southern Africa Lesotho MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Liberia MDA/PC coverage (Geographic) 2015 Download map
Western Africa Liberia MDA/PC coverage (Therapeutic) 2016 Download map

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