Epilepsy and neurocysticercosis in rural Bolivia: A population-based survey


Nicoletti, A; Bartoloni, T; Sofia, V; Bartalesi, T; Chavez, JR; Osinaga, R; Paradisi, T; Dumas, JL; Tsang, VCW; Reggio, A; Hall, AJ; (2005) Epilepsy and neurocysticercosis in rural Bolivia: A population-based survey. Epilepsia, 46 (7). p. 1127. ISSN 0013-9580 DOI: 10.1111/j.1528-1167.2005.67804.x

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Abstract

Purpose: To evaluate the frequency of neurocysticercosis (NCC) in a well-defined prevalent cohort of epilepsy patients in the rural area of the Cordillera province. Methods: We carried out a two-phase door-to-door neuroepidemiologic survey in a sample of 10,124 subjects in a rural area of the Cordillera Province, Bolivia, to detect the prevalence of the most common neurologic disorders including epilepsy. A team of health workers administered a standard screening instrument for neurologic diseases; subjects found positive at the screening phase underwent a complete neurologic examination. Epilepsy patients were diagnosed according to the definition proposed by the International League Against Epilepsy (ILAE, 1993). Epilepsy patients identified this way underwent electroencephalographic recording, computed tomography (CT) scan, and serologic evaluation to detect antibodies against Taenia solium by enzyme-linked immunoelectrotransfer blot. Results: At the end of the survey, we detected 124 defined prevalent epilepsy patients. On the basis of the classification proposed by the ILAE in 1981, partial seizures were the most common type diagnosed (66 patients, 53.3%). Of the 124 patients, 105 underwent CT scan, and a serum sample was taken to detect antibodies against T. solium in 112 patients; for 97 patients, both neuroradiologic and serologic data were available. Considering radiologic, serologic, and clinical features, of these 124 patients, 34 (27.4%) fulfilled the diagnostic criteria for definitive or probable NCC proposed in 2001. Of these 34 patients 24 (70.6%) had partial seizures. Conclusions: Our data confirm a high frequency of NCC among a well-defined prevalent cohort of epilepsy patients.

Item Type: Article
Faculty and Department: Faculty of Epidemiology and Population Health > Dept of Infectious Disease Epidemiology
PubMed ID: 16026566
Web of Science ID: 230431800017
URI: http://researchonline.lshtm.ac.uk/id/eprint/12403

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