Abstract
Zika virus (ZIKV), dengue virus (DENV), chikungunya virus (CHIKV) and yellow fever virus (YFV) share the same mosquito vectors and have similar clinical manifestations early stage of infection. Therefore, simultaneously differentiating these viruses from each other is necessary. We developed a multiplex real-time reverse-transcriptase polymerase chain reaction (RT-PCR) assay for the differentiation of these four viruses in a single tube. The linear range was established by regression analysis, and the R2 value for each viruswas ≥0.98, and the 95% lower limit of detectionfor each virus was as follows (copies/reaction): ZIKV-Asian, 9; ZIKV-Africa, 15; CHIKV, 11; DENV-1, 19; DENV-2, 13; DENV-3, 24; DENV-4, 36; and YFV, 17. Meanwhile, our multiplex real-time RT-PCR has a good consistency with the commercial singleplex assay. In summary, the developed assay can be effectively used for the diagnosis of ZIKV, DENV, CHIKV, and YFV infections.
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