In this double-blind trial conducted on Pemba Island , Tanzania , we randomly assigned children , @ to @ years of age , to receive one of four treatments : oxantel pamoate at a dose of @ mg per kilogram of body weight , plus @ mg of albendazole , administered on consecutive days ; oxantel pamoate at a single dose of @ mg per kilogram ; albendazole at a single dose of @ mg ; or mebendazole at a single dose of @ mg .