title: Equine parasitism.
mesh_terms: D000367:Age Factors; D000818:Animals; D006734:Horse Diseases / Q000453:epidemiology* / Q000469:parasitology; D006736:Horses; D010272:Parasitic Diseases / Q000453:epidemiology; D010273:Parasitic Diseases, Animal; D012621:Seasons; D014481:United States