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  • Title: [Rapid enterovirus genotyping in cerebrospinal fluids: a two-year prospective study in a virology laboratory setting].
    Author: Mirand A, Bailly JL, Henquell C, Peigue-Lafeuille H.
    Journal: Pathol Biol (Paris); 2008; 56(7-8):471-81. PubMed ID: 18835107.
    Abstract:
    UNLABELLED: Enterovirus (EV - 68 serotypes) infections comprise a wide spectrum of clinical presentations including infections of the central nervous system. In severe clinical presentation or epidemics, the precise identification of the involved serotype is necessary. OBJECTIVES: To perform enterovirus genotyping directly in cerebrospinal fluid (CSF) samples, and to assess its feasibility in a laboratory setting. METHODS: Enterovirus genotyping was carried out directly with CSF specimens tested for the diagnostic procedure by amplifying the complete 1D gene encoding the VP1 protein of the HEV-B serotypes (the most frequent) - providing results in two days. Secondly, sequences 1A/1B encoding the VP4/VP2 capsid proteins, respectively, were analysed (results in five days). RESULTS: Direct enterovirus genotyping allowed the identification of enterovirus involved in 77 out of 81 (95%) meningitis cases between January 2006 and December 2007. In combination with the indirect genotyping of enterovirus isolates, identification of the type was achieved in 94 out of 97 (96.9%) patients included in the study. The most frequent serotypes were echovirus 6 (E6) and 13 in 2006, coxsackievirus B2 and E30 in 2007. Four children presented an EV71 associated meningitis. CONCLUSION: When prospectively applied in a laboratory setting, direct enterovirus genotyping in CSF samples allows the identification of the involved enterovirus in two to five days. This time frame is relevant for an optimal patient management, the rapid identification of a new enterovirus variant or in the context of an epidemic alert.
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