Diseases
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Diseases
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Onchocerciasis (River Blindness)
Onchocerciasis is caused by the prelarval (microfilaria) and adult stages of the nematode Onchocerca volvulus The disease is transmitted by the bite of female Simulium flies (black flies) that bite by day and are found near rapidly flowing rivers and streams.
Occurrence: Onchocerciasis is endemic in more than 25 nations located in a broad band across the central part of Africa. Small endemic foci are also present in the Arabian peninsula (Yemen) and in South and Central America (Brazil, Colombia, Ecuador, Guatemala, southern Mexico, and Venezuela
Manifestations: Symptoms are
Diagnose and treatment: The organism is demonstrated in microscope. Treatment is available:
Prevent Onchocerciasis by:
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