BACKGROUND:Onchocerciasis a neglected tropical disease that historically has been a major cause of morbidity and an obstacle to economic development in the developing world. It is caused by infection with Onchocerca volvulus. which is transmitted by black flies of the genus Simulium. The discovery of the potent effect of Mectizan (ivermectin) on O. https://safeersappliancers.shop/product-category/neff-w543bx0gb-integrated-washing-machine/