<unk>   is a Neglected Tropical Disease (NTD) caused by the parasitic worm Onchocerca volvulus. It is transmitted through repeated bites by black flies of the genus Simulium. The disease is called River Blindness because the black fly that transmits the infection lives and breeds near fast-flowing streams and rivers and the infection can result in blindness. In addition to visual impairment or blindness,<unk>  causes skin disease, including nodules under the skin or debilitating itching. Worldwide<unk>  is second only to trachoma as an infectious cause of blindness.
Onchocerciasis
Tungiasis
Leishmaniasis
Necatoriasis
Dracunculiasis
Helminthiasis
Trichiasis
Isosporiasis