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- W2016097545 abstract "Le diagnostic étiologique des infections respiratoires nécessite d'être réalisé rapidement pour une prise en charge efficace des patients. Nous avons évalué une PCR multiplex pour le diagnostic et l'épidémiosurveillance des infections grippales et à virus respiratoire syncytial (VRS). Notre étude a porté sur 278 patients (âge moyen : 37,2 ± 22,9 ans) présentant un syndrome grippal ou pseudogrippal, consultant des médecins vigies du GROG Poitou-Charentes ou hospitalisés au CHU de Poitiers. Une PCR multiplex détectant les virus grippaux A(H3), A(H1), B et les VRS A et B, a été réalisée en parallèle à un examen direct par immunofluorescence et une culture cellulaire. Nous avons mis en évidence une infection virale chez 139 (50,0 %) patients : 99 cas de grippe A(H3), deux cas de grippe A(H1), 28 cas de grippe B et 11 cas d'infection à VRS. Le rendement diagnostique chez les patients du GROG (52,3 %) était significativement plus élevé que celui observé chez les hospitalisés (34,5 %) (p = 0,04). Nous avons obtenu une concordance technique de 61 %. La PCR multiplex a permis un gain de positivité de 22,3 % par rapport aux techniques traditionnelles. Tous les prélèvements positifs par les techniques traditionnelles l'ont été également en PCR multiplex. Nous avons observé une parfaite corrélation entre les types et les sous-types viraux déterminés par PCR et par culture cellulaire. La PCR multiplex est une technique sensible permettant un diagnostic efficace et rapide des infections respiratoires dues aux virus grippaux et au VRS. Respiratory infections require a rapid etiological diagnosis for efficient management of cases. We evaluated multiplex PCR used for the diagnosis and the epidemiological surveillance of influenza and respiratory syncytial virus (RSV) infections. Our study included 278 patients (mean age: 37.2 ± 22.9 years) with flu or flu-like syndromes, consulting physicians affiliated with the GROG Poitou-Charentes or hospitalized in the Poitiers teaching hospital. A multiplex PCR detecting A(H3), A(H1) and B influenza viruses, and RSV A and B, was performed with both a direct examination by immunofluorescence and cell-culture. We diagnosed a viral infection in 139 (50.0%) patients: 99 cases of influenza A(H3), 2 cases of influenza A(H1), 28 cases of influenza B and 11 cases of RSV infections. The diagnosis yield in GROG patients (52.3%) was significantly higher than that observed in hospitalized patients (34.5%) (P = 0.04). All techniques were correlated in 61% of cases. The multiplex PCR yielded 22.3% more positive samples compared to the conventional techniques. All positive samples by conventional techniques were also positive by multiplex PCR. We observed a perfect correlation between viral types and subtypes determined by PCR and cell-culture. Multiplex PCR is a sensitive technique allowing an efficient and rapid diagnosis of respiratory infections due to influenza and RSV." @default.
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- W2016097545 date "2007-11-01" @default.
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- W2016097545 title "Diagnostic et surveillance épidémiologique des infections grippales et à virus respiratoire syncytial: intérêt de la PCR multiplex" @default.
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- W2016097545 doi "https://doi.org/10.1016/j.medmal.2007.02.010" @default.
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