Onchocerciasis (River Blindness) – Symptoms, Causes, Risk Factors and Preventive


Onchocerciasis, also called River Blindness, is a condition which affects the skin and eyes. It is caused by the volvulus Onchocerca worm. Onchocerca volvulus is a parasite. It’s spread to humans and livestock through the bite of a type of blackfly from the genus Simulium. This type of blackfly is found near rivers and streams. That’s where the name “river blindness” comes from. Symptoms Not everyone with onchocerciasis will have symptoms, especially not right away. Most new infections won’t start to show any symptoms for a year or two, and…

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