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Yellow fever–dengue chimeras (CYDs) are being developed currently as live tetravalent dengue vaccine candidates. Specific quantitative assays are needed to evaluate the viral load of each serotype in vaccine batches and biological samples. A quantitative real-time RT-PCR (qRT-PCR) system was developed comprising five one-step qRT-PCRs targeting the E/NS1 junction of each chimera, or the NS5 gene in...
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