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- W2029498685 abstract "In common with latent viruses such as herpesviruses, parvovirus B19, HBV and GBV-C are contained successfully by the immune response and persist in the host. When immune control breaks down, reactivation of both latent and persistent viruses occurs. Two multiplex assays were developed (B19, HBV, HHV-8), (EBV, CMV, VZV) for blood screening, and tested on blood donor samples from Ghana to determine baseline prevalence of viraemia in immunocompetent persons. Single-virus real-time quantitative PCR (qPCR) assays were optimised for viral load determination of positive initial screening. The qPCR method utilised was absolute quantification with external standards. Multiplex and single-virus qPCR assays had similar sensitivity, except for the B19 assay in which sensitivity was 100-fold lower. Assays were optimised for reproducibility and repeatability, with R2 of 0.9 being obtained for most assays. With the exception of B19 and CMV, assays had 100% detection limit ranging between 101 and 102 copies, IU or arbitrary units under single-virus and multiplex assay conditions. The prevalence of viraemia was 1.6% HBV (0.8% DNA+/HBsAg−, 0.8% DNA+/HBsAg+), 0.8% parvovirus B19, and 3.3% GBV-C viraemia in the plasma fraction. The prevalence of four herpesviruses was 1.0% HHV-8, 0.85% CMV, and 8.3% EBV, and no detectable VZV viraemia." @default.
- W2029498685 created "2016-06-24" @default.
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- W2029498685 date "2008-07-01" @default.
- W2029498685 modified "2023-10-15" @default.
- W2029498685 title "Multiplex real-time PCR for the detection and quantification of latent and persistent viral genomes in cellular or plasma blood fractions" @default.
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- W2029498685 doi "https://doi.org/10.1016/j.jviromet.2008.03.023" @default.
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