[1] Ctr Suisse Rech Sci Cote Ivoire, Abidjan, Cote Ivoire
[2] Case Western Reserve Univ, Sch Med, Ctr Global Hlth & Dis, Cleveland, OH 44106 USA
[3] Univ Liverpool Liverpool Sch Trop Med, Liverpool, Merseyside, England
[4] Programme Natl Lutte Schistosomiase Geohelminthia, Abidjan, Cote Ivoire
[5] Washington Univ, Sch Med, Div Infect Dis, Dept Internal Med, St Louis, MO 63110 USA