Prevalence and comparison of serologic assays, necropsy, and tongue examination for the diagnosis of porcine cysticercosis in Peru

Armandoe Gonzalez, V. Cama, Robert H Gilman, V. C W Tsang, J. B. Pilcher, A. Chavera, M. Castro, T. Montenegro, M. Verastegui, E. Miranda, H. Bazalar

Research output: Contribution to journalArticle

Abstract

Swine cysticercosis, a severe zoonotic disease which is part of the Taenia solium life cycle, causes major economic losses in pig husbandry. Throughout South America, farmers diagnose cysticercosis by examining the tongues of their pigs for cysticercus nodules. Famers do not bring pigs believed to be infected to the slaughterhouse for fear of confiscation. Therefore, reliable statistics on porcine cysticercosis can only be acquired at the household level. We examined the utility of the tongue test as a diagnostic tool for porcine cysticercosis. The results of the tongue test was compared with 2 serologic methods for the detection of cysticercosis, the enzyme-linked immunosorbent assay (ELISA) and the enzyme-linked immunoelectrotransfer blot assay (EITB), and with necropsy results. We examined 11 animals from an endemic area (Huancayo) and 42 animals from an area free of cysticercosis (Lima). The tongue test has a sensitivity of 70% and a specificity of 100%, the EITB a sensitivity and specificity of 100%, and the ELISA a sensitivity of 79% and a specificity of 75%. Thus, the tongue examination, being a test essentially without cost and having fair sensitivity and high specificity, can be useful in epidemiological surveys. Prevalence for porcine cysticercosis in Huancayo is 23.4% by tongue examination, 31.2% by necropsy, 37.7% by ELISA, and 51.9% by EITB.

Original languageEnglish (US)
Pages (from-to)194-199
Number of pages6
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume43
Issue number2
StatePublished - 1990
Externally publishedYes

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Cysticercosis
Peru
Tongue
Swine
Enzyme-Linked Immunosorbent Assay
Enzymes
Taenia solium
Cysticercus
Sensitivity and Specificity
Abattoirs
South America
Zoonoses
Life Cycle Stages
Fear
Economics
Costs and Cost Analysis

ASJC Scopus subject areas

  • Parasitology
  • Infectious Diseases

Cite this

Prevalence and comparison of serologic assays, necropsy, and tongue examination for the diagnosis of porcine cysticercosis in Peru. / Gonzalez, Armandoe; Cama, V.; Gilman, Robert H; Tsang, V. C W; Pilcher, J. B.; Chavera, A.; Castro, M.; Montenegro, T.; Verastegui, M.; Miranda, E.; Bazalar, H.

In: American Journal of Tropical Medicine and Hygiene, Vol. 43, No. 2, 1990, p. 194-199.

Research output: Contribution to journalArticle

Gonzalez, A, Cama, V, Gilman, RH, Tsang, VCW, Pilcher, JB, Chavera, A, Castro, M, Montenegro, T, Verastegui, M, Miranda, E & Bazalar, H 1990, 'Prevalence and comparison of serologic assays, necropsy, and tongue examination for the diagnosis of porcine cysticercosis in Peru', American Journal of Tropical Medicine and Hygiene, vol. 43, no. 2, pp. 194-199.
Gonzalez, Armandoe ; Cama, V. ; Gilman, Robert H ; Tsang, V. C W ; Pilcher, J. B. ; Chavera, A. ; Castro, M. ; Montenegro, T. ; Verastegui, M. ; Miranda, E. ; Bazalar, H. / Prevalence and comparison of serologic assays, necropsy, and tongue examination for the diagnosis of porcine cysticercosis in Peru. In: American Journal of Tropical Medicine and Hygiene. 1990 ; Vol. 43, No. 2. pp. 194-199.
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