Of the 1,200 people surveyed for dracontiasis in Ribi and Kanje villages in Awe Local Government Area of Plateau State, Nigeria, 982 (82%) were infected. Most infections (98%) involved the lower limb. Worms emerging from the umbilicus, groin, palm, wrist, and upper arm were also encountered. Of the 982 infected persons 206 (21%) were totally incapacitated, 193 (20%) were seriously disabled, and 431 (44%) suffered mild incapacity, while 152 (16%) were unaffected. Of the 5 species of cyclopoid copepods found in their main water source, only Thermocyclops nigerianus and Mesocyclops aequatorialis harboured guineaworm larvae.