River blindness is caused by parasitic worms
River blindness, a parasitic disease spread by blackflies, causes severe eye inflammation and vision loss in millions, but global efforts are dramatically reducing its impact.
Onchocerciasis, known as river blindness, is a devastating parasitic disease. It's caused by tiny worms transmitted through blackfly bites, often found near fast-flowing rivers in tropical regions. Once inside, these worms release larvae that migrate, causing intense inflammation and scarring in the eyes, eventually leading to blindness.
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