Diagnosing the tropical parasitic illness Onchocerciasis, also known as river blindness, might soon be as easy as testing a urine sample. Such a simple test would permit more effective diagnosis and treatment of a disease that now afflicts nearly 18 million people around the world. People call Onchocerciasis "river blindness" because it's caused by the bite of a parasitic-worm-infected black fly that lives near rivers. The illness is most common in sub-Saharan Africa, although it ...
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