“Slash and Clear”, a Community-Based Vector Control Method to Reduce Onchocerciasis Transmission by <i>Simulium sirbanum</i> in Maridi, South Sudan: A Prospective Study oleh Stephen Raimon, Tom L. Lakwo, Wilson John Sebit, Joseph Nelson Siewe Fodjo, Peter Alinda, Jane Y. Carter, Rory J. Post, Robert Colebunders