Inclusion Criteria:  Adults (18-65 years) Infected with S. stercoralis (positive) Absence of major systemic illnesses Written informed consent  Exclusion Criteria:  Any abnormal medical conditions or chronic disease Negative diagnostic result for S. stercoralis No written informed consent by the individual. Pregnant and lactating women. Recent use of an anthelmintic drug (within past 4 weeks) Attending other clinical trials during the study Known allergy to study medications (i.e. moxidectin, ivermectin) Currently taking medications with known interaction (i.e. for warfarin)