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Assessment of routine inspection methods for porcine cysticercosis in Zambian village pigs

Published online by Cambridge University Press:  12 April 2024

I.K. Phiri ,
P. Dorny ,
S. Gabriel ,
A.L. Willingham III ,
C. Sikasunge ,
S. Siziya  and
J. Vercruysse
I.K. Phiri*
Affiliation:
Department of Clinical Studies, School of Veterinary Medicine, University of Zambia, PO Box 32379, Lusaka, Zambia
P. Dorny
Affiliation:
Department of Animal Health, Prince Leopold Institute of Tropical Medicine, Nationalestraat 155, B-2000 Antwerp, Belgium Laboratory of Veterinary Parasitology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
S. Gabriel
Affiliation:
Department of Clinical Studies, School of Veterinary Medicine, University of Zambia, PO Box 32379, Lusaka, Zambia
A.L. Willingham III
Affiliation:
WHO/FAO Collaborating Centre for Research and Training for Emerging and other Parasitic Zoonoses, Danish Centre for Experimental Parasitology, Royal Veterinary and Agricultural University, Dyrelægevej 100, 1870 Frederiksberg C, Denmark.
C. Sikasunge
Affiliation:
Department of Clinical Studies, School of Veterinary Medicine, University of Zambia, PO Box 32379, Lusaka, Zambia
S. Siziya
Affiliation:
Department of Community Medicine, School of Medicine, University of Zambia, PO Box 32379, Lusaka, Zambia
J. Vercruysse
Affiliation:
Laboratory of Veterinary Parasitology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820 Merelbeke, Belgium
*
* Fax: +260 1 291190 E-mail: [email protected]
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Abstract

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The value of tongue and meat inspection as diagnostic tools for porcine cysticercosis was assessed in 65 Zambian village pigs by comparing the results with carcass dissections. In addition, the intensity of infections, distribution and viability of cysts in infected pigs were measured. Five pigs (7.7%) were positive on tongue examination, while routine meat inspection showed 12 (18.5%) positives. However, carcass dissections detected cysticerci in 31 (47.7%) pigs. The range in number of cysticerci was 1 to 14,662 per carcass. Cysticerci were distributed throughout the carcass with the highest concentration in the heart, tongue and hind legs. In one animal 13 viable cysts were detected only in the brain. Fourteen pigs had more than 100 viable cysts, six between 2 and 100, and four had single cyst infections. Seven animals harboured only calcified cysts. These findings demonstrate the serious shortcomings of routine detection methods for porcine cysticercosis. While the specificity of tongue palpation and meat inspection was 100%, these tests failed to detect the infection in 83.9% and 61.3% of infected pigs, respectively.

Type
Research Article
Information
Journal of Helminthology , Volume 80 , Issue 1 , March 2006 , pp. 69 - 72
Copyright
Copyright © Cambridge University Press 2006

References

Anon. (1994) Relationship between epilepsy and tropical diseases. Epilepsia 35, 89–93.CrossRefGoogle Scholar
Boa, M.E., Kassuku, A.A., Willingham, A.L. III, Keyyu, J.D., Phiri, I.K. & Nansen, P. (2002) Distribution and density of cysticerci of Taenia solium by muscle groups and organs in naturally infected local finished pigs in Tanzania. Veterinary Parasitology 106, 155–164.CrossRefGoogle ScholarPubMed
Dorny, P., Phiri, I.K., Vercruysse, J., Gabriel, S., Willingham, A.L. III, Brandt, J., Victor, B., Speybroeck, N. & Berkvens, D. (2004) A Bayesian approach for estimating values for prevalence and diagnostic test characteristics of porcine cysticercosis. International Journal for Parasitology 34, 569–576.CrossRefGoogle ScholarPubMed
Engels, D., Urbani, C., Belotto, A., Meslin, F. & Savioli, L. (2003) The control of human (neuro) cysticercosis: which way forward? Acta Tropica 87, 177–182.CrossRefGoogle ScholarPubMed
Gonzalez, A.E., Cama, V., Gilman, R.H., Tsang, V.C.W., Pilcher, J.B., Chavera, A., Castro, M., Montenegro, T., Verastegui, M., Miranda, E. & Bazalar, H. (1990) Prevalence and comparison of serological assays, necropsy, and tongue examination for the diagnosis of porcine cysticercosis in Peru. American Journal of Tropical Medicine and Hygiene 43, 194–199.CrossRefGoogle ScholarPubMed
Gracey, J.F. (Ed.) (1986) Parasitic diseases. pp. 391–393 in Meat hygiene, 8th edn. English Language Book Society/Bailliere, UK.Google Scholar
Nguekam, J.P., Zoli, A.P., Vondou, L., Pouedet, S.M.R., Assana, E., Dorny, P., Brandt, J. & Geerts, S. (2003) Kinetics of circulating antigens in pigs experimentally infected with Taenia solium eggs. Veterinary Parasitology 111, 323–332.CrossRefGoogle ScholarPubMed
Onah, D.N. & Chiejina, S.N. (1995) Taenia solium cysticercosis and human taeniosis in the Nsuka area of Enugu State, Nigeria. Annals of Tropical Medicine and Parasitology 89, 399–407.CrossRefGoogle Scholar
Phiri, I.K., Ngowi, H., Afonso, S., Matenga, E., Boa, M., Mukaratirwa, S., Githigia, S., Saimo, M., Sikasunge, C., Maingi, N., Lubega, G.W., Kassuku, A., Michael, L., Siziya, S., Krecek, R.C., Noormahomed, E., Vilhena, M., Dorny, P. & Willingham, A.L. III (2003) The emergence of Taenia solium cysticercosis in eastern and southern Africa as a serious agricultural problem and public health risk. Acta Tropica 87, 13–23.CrossRefGoogle ScholarPubMed
Sciutto, E., Martínez, J.J., Villalobos, N.M., Hernández, M., José, M.V., Beltrán, C., Rodarte, F., Flores, I., Bobadilla, J.R., Fragoso, G., Parkhouse, M.E., Harrison, L.J.S. & De Aluja, A.S. (1998) Limitations of current diagnostic procedures for the diagnosis of Taenia solium cysticercosis in rural pigs. Veterinary Parasitology 79, 299–313.CrossRefGoogle ScholarPubMed