Early stage of acute coenurosis in Iranian native sheep- case report.

  • Rahim Hobbenaghi Dept. of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
  • Mousa Tavassoli Dept. of Parasitology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
  • Ali Nazarizadeh Dept. of Pathobiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran.
Keywords: Coenurus cerebralis, Histopathology, Sheep, Taenia multiceps


Cerebral coenurosis is the intermediary larval stage of Taenia multiceps, which affects intermediate hosts, particularly sheep and goats. In this report, gross and microscopic features of three scarce natural coenurosis cases, a oneyear-old ram and two lambs of 7 month old from a flock are explained. Atnecropsy, numerous small cysts measuring 5 to 10 mm in diameter were observed on both cerebrum and cerebellum surfaces, likewise multiple deep parts of which. In histopathological examination of the neural tissue, severe tissue destruction, a distinct layer of Gitter cells formation around the cysts,neuronophagia, gliosis and perivascular infiltration of lymphocytes were observed. In this early stage of parasite life cycle, larval migration and destruction of tissue, also aggregation of glial cells around the cysts cause a loose connection between cysts and neural tissue.


Soulsby EJL. Helminths, arthropods, & protozoa of domesticated animals [by] E. J. L. Soulsby. Monnig HOVh, entomology, editors. Baltimore: Williams and Wilkins Co; 1982.

Doherty ML, Bassett HF, Breathnach R, Monaghan ML, McLearn BA. Outbreak of acute coenuriasis in adult sheep in Ireland. Veterinary Record. 1989;125:185-6.

Radostits OM, Gay CC, Hinchcliff KW, Constable PD. VETERINARY MEDICINE. In: Rodenhuis J, editor. A textbook of the diseases of cattle, horses, sheep, pigs and goats. 10th ed. Spain: ELSEVIER; 2007. p. 606-9.

Sharma DK, Chauhan PPS. Coenurosis status in Afro-Asian region: a review. Small Ruminant Res. 2006;64(197-202):197-202.

Aitken I. Diseases of Sheep. 1. Fourth ed. Singapore: Wiley; 2008. p. 266.

National animal disease information service nadis. Nervous Disease in Sheep, Listeriosis http://www.nadis.org.uk/bulletins/nervousdisease- in-sheep.aspx 2014 [cited 2014. 8.22].

Scott PR. Diagnosis and treatment of coenurosis in sheep. Vet Parasitol. 2012;189:75– 8.

Komnenou A, Argyroudis S, Giadinis N, Dessiris A. Surgical treatment of coenurosis (gid) in sheep. Vet Rec. 2000; 147:242–4.

Scott P. Coenurosis. In: Aitken ID (ed), Diseases of Sheep. 4th ed. London, UK: Blackwell Publishing; 2007.

Gharagozlou MJ, Mobedi I, Akhavan P. A pathological and parasitological study of Coenurus Gaigeri infestation of Goats from Iran. Indian J Vet Pathol. 2003;27:95-7.

Nourani H, Pirali Kheirabadi k. Cerebral coenurosis in a goat: pathological findings and literature review. Comp Clin Pathol. 2009;18:85-7.

Nooruddin M, Dey A, Ali M. Coenuriasis in Bengal goats of Bangladesh. Small Ruminant Res. 1996;19:77-81.

Oge H, Oge S, Gonenc B, Ozbakis G, Asti C. Coenurosis in the lumbar region of a goat: a case report. Vet Med. 2012;57(6):308-13.

Batista F, Pizzigatti D, Martins C, Nunes M, Megda T, Ribeiro O, et al. First report of coenurosis in sheep in the State of Mato Grosso do Sul, Brazil. Rev Bras Parasitol Vet, Jaboticabal. 2010;19(4):265-7.

Abo-Shehada MN, Jebreen E, Arab B, Mukbel R, Torgerson R. Prevalence of Taenia multiceps in sheep in northern Jordan. Preven Vet Med. 2002;55:201–7.

Ghazaei C. Evaluation therapeutic effects of antihelminthic agents albendazole, fenbendazole and praziquantel against coenurosis in sheep. Small Ruminant Res. 2007;71:48-51.

Toofanian F, Ivoghli B. Cerebral coenurosis in a wild sheep (Ovis ammon). J Wildl Dis. 1976;12:550-1.

Christodoulopoulos G. Two rare clinical manifestations of coenurosis in sheep. Vet Parasitol. 2007;143:368–70.

Giadinis N, Psychas V, Polizopoulou Z, Papadopoulos E, Papaioannou N, Komnenou A, et al. Acute coenurosis of dairy sheep from

flocks in Greece. New Zealand Vet J. 2012;60(4):247-53.

Farjani Kish G, Khodakaram-Tafti A, Hajimohammadi A, Ahmadi N. Clinical and morphopathological characteristics of an enzootic occurrence of acute coenurosis (Coenurus cerebralis) in a sheep herd. J Parasit Dis. 2013.

How to Cite
Hobbenaghi R, Tavassoli M, Nazarizadeh A. Early stage of acute coenurosis in Iranian native sheep- case report. IJPA. 9(4):588-93.