Onchocerciasis in Guinea Bissau, West Africa A.J. Santos Gracio, A.J. Shelley, M. Charalambous, C.A. Lowry, M.A.A. Gracio, J.A.G. Forte, J. Raybould, D. Molyneux and A.T. Nhaque Parasite, 1 1S (1994) S6-S7 Published online: 01 October 2014 DOI: 10.1051/parasite/199401s1006