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  • Title: [The current epidemiological situation of cysticercosis in Madagascar].
    Author: Andriantsimahavandy A, Ravaoalimalala VE, Rajaonarison P, Ravoniarimbinina P, Rakotondrazaka M, Raharilaza N, Rakotoarivelo D, Ratsitorahina M, Rabarijaona LP, Ramarokoto CE, Leutscher P, Migliani R.
    Journal: Arch Inst Pasteur Madagascar; 2003; 69(1-2):46-51. PubMed ID: 15678816.
    Abstract:
    Being associated to fecal-oral transmission, cysticercosis is contracted either by auto-infection or by ingestion of food contaminated with eggs from the pork tape worm (Taenia solium). In the stomach, the larvae named cysticercus (Cysticercus cellulosae) hatches from the eggs and invades the host through the mucosa membrane. Human cysticercosis occurs in highly prevalent proportions in many developing countries including Madagascar where hygiene conditions are deplicable. Serology tests applicable to epidemiological surveillance of cysticercosis and associated pathology in the Malagasy population have been developed: an enzyme-linked immunosorbent assay (ELISA) for screening purpose, and an enzyme-linked immunoelectrotransfer blot assay (EITB) for confirmative testing. Two specific bands (13 and 14 kDa) have been identified as significant markers of the cysticercus in an active (vesicle) stage of the infection when cestocidal treatment is strongly indicated. The same bands may on the other hand be absent at early (cyste) as well as late (calcified) stages of the infection. Series of studies, including 4,375 serum samples, have been undertaken from 1994 until 1999 aiming at determinating the cysticercosis sero-prevalence in different provinces of Madagascar. It was confirmed that cysticercosis is highly frequent on the island, and that there exists a marked variation in the prevalence from 7 to 21% between the different provinces: less than 10% in coastal regions (Mahajanga and Toamasina) increasing to 20% in central regions (Ihosy, Ambositra and Mahasolo). It has also been observed that cysticercosis may occur in individuals at any age, and that it is equally distributed in urban as in rural areas. However, it is more frequently detected in women than in men. Madagascar is an endemic country for cysticercosis, which causes major and severe disease with implications in the public health sector. A national control program is, therefore, urgently warranted.
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