title: Bovine onchocerciasis in Nigeria.
mesh_terms: D000003:Abattoirs; D000818:Animals; D002417:Cattle / Q000469:parasitology; D002418:Cattle Diseases / Q000453:epidemiology*; D009549:Nigeria; D009855:Onchocerciasis / Q000453:epidemiology / Q000662:veterinary*