Introduction

What is Onchocerciasis ? A public health disease of socio-economic importance Onchocerciasis is a dermal filariasis caused by the development in human of the filarial worm Onchocerca volvulus (Duke, 1990).The main clinical manifestations of the disease are skin lesions and visual impairment which may result in blindness. O. volvulus is necessarily transmitted to man by the bites of a blackfly vector of the genus Simulium in West Africa. This fly breeds exclusively in fast-flowing stretches of..