[youtube 8IaJ9NsC3tA] In poor remote communities in the tropics, river blindness (Onchocerciasis) affects 18 million people, 99% of these in Africa. Victims become infected by parasitic worms, which are transmitted by black flies along fast-flowing rivers. This disease spreads through the body and causes blindness and severe skin rashes. The nation of Uganda has made [...]
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