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Epilepsy is not caused by cysticercosis in The Gambia
Objective:
To determine whether epilepsy is caused by Taenia solium cysticercosis in The Gambia.
Methods:
Case-control study testing samples collected from 210 people with epilepsy and 420 matched controls by sex and age +/-5 years from 69 different places around the country during the period October 2008-March 2009. All serum samples were subjected to an antigen detection ELISA (Ag-ELISA) and electro-immunotransfer blot (EITB), and the seropositives were further CT-scanned to determine the presence of cysticerci in the brain.
Results:
Although not significantly different (P = 0.668), circulating Taenia antigen was found by Ag-ELISA in 1.4% (95% CI: 0.3-4.1) of people with epilepsy and in 1.9% (95% CI: 0.8-3.7) of the controls. A non-significant (P = 0.4718) odds ratio of association 0.75 (95% CI: 0.13-3.15) between epilepsy and the presence of Taenia antigens was found. All 630 serum samples turned out seronegative by the EITB test. There were no intracranial cysts or cyst-like structures detected among the nine CT-scanned Ag-ELISA seropositives.
Conclusion:
Epilepsy appears not to be caused by cysticercosis in The Gambia.
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