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2002, Number 2

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Rev Mex Patol Clin Med Lab 2002; 49 (2)

Human taeniasis for Taenia solium

Meza-Lucas A, Aguilar RF

Language: Spanish
References: 19
Page: 92-99
PDF size: 146.94 Kb.


ABSTRACT

Taeniasis by Taenia solium is prevalent in many countries of Africa, Asia and Latin America, especially in rural as well as an urban areas that lack infrastructure sanitary, poverty and poor hygiene and where the pigs have free access to human feces. Their life cycle requires an intermediate host, the pig, for the cystic form or cysticerci and a definitive host, the human, for the adult tapeworm. The pigs are the source of human Taeniasis, an intestinal disease acquired by eating undercooked pork contaminated by cysticerci. The life cycle is maintained when pigs eat human feces containing tapeworms eggs and develop porcine cysticercosis. Humans can also act as intermediate hosts by ingestion of Taenia solium eggs leading to development cysticercosis. Examination of a suspected carrier’s stool for eggs may detect most infections, particularly if more than one coproparasitologic method is used. Due Taenia saginata eggs found in feces not permit species identification, their differentiation is recommended to be made by the morphology of gravid proglottids or, if available, the scolex. An approach based on detection of adult parasite antigen in feces (coproantigens) has been shown to considerably increase the number of carrier’s adult parasite and has been used in a several epidemiological studies as well as a routine diagnosis.


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