An epidemiological study of intestinal helminths on 52 red foxes (Vulpes vulpes) from 30 out of 162 villages around of Sarab region (East Azerbaijan Province), the prevalence of any intestinal parasitic infection was (78.9%). Study results and helminth counts were compared Using necropsy results as a reference. The most common nematodes were helminths: Mesocestoides lineatus, Uncinaria stenocephala, Toxocara canis , Toxascaris sp and Rictolaria sp. The most common Cestodes were Taenia spp. and D. caninum and the most acanthocephalan was M. hirudinaceus. Based on the necropsy methods, 96.5% foxes harbored the adult worms of at least one parasitic helminth species. 2 foxes (3.8%) were positive for filarial parasites but adult Dirofilaria immitis was not found in the heart of animals. All filarial species and all stages were found only in foxes killed at an around Ardaha village. Fecal examinations on 52 foxes identified eggs of U. stenocephala(22.4%) and Toxocara canis (44.5%), Ancylostoma caninum (14.5%), Toxascaris sp (2.7%), Trichuris vulpis (2.7%), larvae of Strongyloides spp. (1.7%) and oocysts of Eimeria spp (5.8%). Significant difference in prevalence was found for T. canis and Uncinaria stenocephala according to host sex. Intestinal scrapings for these samples by microscopic examination, Echinococcus were not seen. The infection rates were significantly different in the eight areas being higher in the area of Ardaha.
