title: A field study of the effect of ivermectin on intestinal helminths in man.
abstract: A single stool specimen from each of 904 villagers participating in a placebo-controlled trial of ivermectin for onchocerciasis was examined for intestinal helminths by the formol-ether technique. Ivermectin had a significant effect on Ascaris infection, reducing prevalence and intensity for at least 3 months, but rapid reinfection occurred. There was no significant effect on Trichuris, Necator or Schistosoma mansoni infections. Incidental Strongyloides infections were not seen commonly in this population, but were significantly reduced in the ivermectin-treated group. Regular administration of ivermectin on a mass basis would reduce the prevalence of Ascaris infection and any attendant morbidity. This is a useful additional effect of the drug.
authors.affiliation: Medical Research Council Laboratory, Bo, Sierra Leone.
authors.forename: J A
authors.initials: JA
authors.lastname: Whitworth
authors.forename: D
authors.initials: D
authors.lastname: Morgan
authors.forename: G H
authors.initials: GH
authors.lastname: Maude
authors.forename: A M
authors.initials: AM
authors.lastname: McNicholas
authors.forename: D W
authors.initials: DW
authors.lastname: Taylor
mesh_terms: D000818:Animals; D001196:Ascariasis / Q000188:drug therapy; D005260:Female; D006373:Helminthiasis / Q000188:drug therapy*; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000188:drug therapy*; D007559:Ivermectin / Q000627:therapeutic use*; D008297:Male; D009332:Necatoriasis / Q000188:drug therapy; D012555:Schistosomiasis mansoni / Q000188:drug therapy; D013322:Strongyloidiasis / Q000188:drug therapy; D014257:Trichuriasis / Q000188:drug therapy
chemical_list: D007559:Ivermectin