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.

24 maps found
There are currently no regional maps for this Program stage
527 maps found
Region Countrysort descending Program stage Years Maps Data
Central Africa Central African Republic MDA/PC coverage (Geographic) 2013 Download map
Central Africa Central African Republic Impact Assessment (Skin Biopsy) Download map
Central Africa Central African Republic MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Central African Republic MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Central African Republic MDA/PC coverage (Geographic) 2016 Download map
Central Africa Central African Republic MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Central African Republic MDA/PC coverage (Geographic) 2014 Download map
Central Africa Central African Republic MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Central African Republic Mapping Surveys (Nodule Palpation) 1999 - 2001 Download map
Central Africa Chad MDA/PC coverage (Geographic) 2016 Download map
Central Africa Chad Mapping Surveys (Nodule Palpation) 2013 Download map
Central Africa Chad MDA/PC coverage (Geographic) 2015 Download map
Central Africa Chad MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Chad MDA/PC coverage (Geographic) 2014 Download map
Central Africa Chad Impact Assessment (Skin Biopsy) Download map
Central Africa Chad MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Chad MDA/PC coverage (Geographic) 2013 Download map
Central Africa Chad MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Chad 2017 Download map
Central Africa Chad MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Chad MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Chad MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Chad Mapping Surveys (Skin Biopsy) 2013 - 2014 Download map
Eastern Africa Comoros MDA/PC rounds (Geographic) 2013 - 2016 Download map
Eastern Africa Comoros MDA/PC coverage (Geographic) 2015 Download map
Eastern Africa Comoros 2017 Download map
Eastern Africa Comoros MDA/PC coverage (Geographic) 2014 Download map
Eastern Africa Comoros MDA/PC coverage (Geographic) 2013 Download map
Eastern Africa Comoros MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Eastern Africa Comoros MDA/PC coverage (Therapeutic) 2015 Download map
Eastern Africa Comoros MDA/PC coverage (Therapeutic) 2016 Download map
Eastern Africa Comoros MDA/PC coverage (Geographic) 2016 Download map
Eastern Africa Comoros MDA/PC coverage (Therapeutic) 2013 Download map
Eastern Africa Comoros MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Republic of Congo Mapping Surveys (Skin Biopsy) 2014 - 2015 Download map
Central Africa Republic of Congo MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Republic of Congo MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Republic of Congo Mapping Surveys (Nodule Palpation) 2003 Download map
Central Africa Republic of Congo MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Republic of Congo MDA/PC coverage (Geographic) 2014 Download map
Central Africa Republic of Congo MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Republic of Congo MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Republic of Congo MDA/PC coverage (Geographic) 2013 Download map
Central Africa Republic of Congo MDA/PC coverage (Geographic) 2016 Download map
Central Africa Republic of Congo 2017 Download map
Central Africa Republic of Congo Impact Assessment (Skin Biopsy) Download map
Central Africa Republic of Congo MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Republic of Congo MDA/PC coverage (Geographic) 2015 Download map
Central Africa Democratic Republic of the Congo Mapping Surveys (Anti-Ov16 test) 2015 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Geographic) 2016 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Democratic Republic of the Congo Mapping Surveys (Skin Biopsy) 2014 - 2015 Download map
Central Africa Democratic Republic of the Congo Mapping Surveys (Nodule Palpation) 2000 - 2014 Download map
Central Africa Democratic Republic of the Congo MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Therapeutic) 2014 Download map
Central Africa Democratic Republic of the Congo MDA/PC rounds (Geographic) 2013 - 2016 Download map
Central Africa Democratic Republic of the Congo Impact Assessment (Skin Biopsy) Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Geographic) 2013 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Geographic) 2015 Download map
Central Africa Democratic Republic of the Congo MDA/PC coverage (Geographic) 2014 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Therapeutic) 2013 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Geographic) 2015 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Therapeutic) 2014 Download map
Western Africa Cote d’Ivoire Mapping Surveys (Skin Biopsy) 2014 Download map
Western Africa Cote d’Ivoire Mapping Surveys (Nodule Palpation) 2014 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Geographic) 2014 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Therapeutic) 2015 Download map
Western Africa Cote d’Ivoire MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Geographic) 2013 Download map
Western Africa Cote d’Ivoire 2017 Download map
Western Africa Cote d’Ivoire MDA/PC rounds (Geographic) 2013 - 2016 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Therapeutic) 2016 Download map
Western Africa Cote d’Ivoire MDA/PC coverage (Geographic) 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2015 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2014 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 rounds (Geographic) 2013 - 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2015 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Geographic) 2016 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2013 Download map
Central Africa Equatorial Guinea Mapping Surveys (Skin Biopsy) 2013 - 2015 Download map
Central Africa Equatorial Guinea MDA/PC coverage (Therapeutic) 2016 Download map
Central Africa Equatorial Guinea Mapping Surveys (Nodule Palpation) 1999 - 2013 Download map
Central Africa Equatorial Guinea 2017 Download map
Central Africa Equatorial Guinea MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Central Africa Equatorial Guinea Impact Assessment (Skin Biopsy) Download map
Eastern Africa Ethiopia Impact Assessment (Skin Biopsy) Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2015 Download map
Eastern Africa Ethiopia MDA/PC rounds (Therapeutic) 2013 - 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2014 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2013 Download map
Eastern Africa Ethiopia Mapping Surveys (Skin Biopsy) 2012 - 2014 Download map
Eastern Africa Ethiopia Mapping Surveys (Nodule Palpation) 2001 - 2012 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2015 Download map
Eastern Africa Ethiopia MDA/PC coverage (Geographic) 2016 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2013 Download map
Eastern Africa Ethiopia MDA/PC coverage (Therapeutic) 2014 Download map

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