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Memorias del Instituto de Investigaciones en Ciencias de la Salud

versão On-line ISSN 1812-9528


FARINA, N et al. Sensibility and specificity of the immunochromatographic method used for rotavirus diagnosis. Mem. Inst. Investig. Cienc. Salud [online]. 2008, vol.6, n.2, pp.05-10. ISSN 1812-9528.

The rotavirus (RV) is the major causative agent of acute viral diarrhea in children under 5 years old and is responsible for approximately 6% of the deaths in this age group making necessary the use of quick and reliable diagnosis methods. The aim of this study is to evaluate the sensibility and specificity of the immunochromatographic method (ICG) on which many commercial kits used for the diagnosis of A rotavirus group are based taking as a reference the polyacrylamide gel electrophoresis (PAGE). Feces samples were collected from 317 patients with acute that attended a private laboratory from May to November, 2006 for rotavirus analysis. All the information of the patients was managed confidentially. Kits of the commercial brands simple Operón (n=154) or SD Bioline rotavirus (n=163) were used strictly following the instructions of the manufacturers. Samples were maintained in cold and sent to the IICS for the performance of the molecular studies. The sensibility obtained by the method ICG was 97.8%, the specificity was 84% and the absolute concordance was 90 %. The samples that gave discrepant results between ICG and PAGE were confirmed by nRT-PCR that provided results similar to those obtained by PAGE. The sensibility of the ICG method is very good and though the specificity is moderated it can be used as screening for the quick diagnosis of rotavirus and it would be advisable to use more specific methods, as the molecular ones, for epidemiological studies.

Palavras-chave : rotavirus; immunochromatography; sensitivity; specificity.

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