Dengue Type Ⅰ Virus Isolated in Guangzhou Detected by Using TaqMan MGB Real-time PCR / 中华医院感染学杂志

ABSTRACT

OBJECTIVE To detect serotype of dengue virus in sera from patients with fever.METHODS A pair of degenerated primers and one MGB probe were designed targeting the conserved region at the E gene of dengue type 1 virus.TaqMan MGB real-time PCR assay was developed with plasmid including E gene of dengue type 1 virus as standard sample.The sera of 10 patients with fever were used to extract RNA,and convert into cDNA.Then cDNA were detected by TaqMan MGB real-time PCR assay and the amplified products were analyzed at the same time.RESULTS The sera of 9 patients from 10 samples were observed to generate a fluorescent signal,and about 100 bp fragment was obtained simultaneously.CONCLUSIONS Dengue fever on 2006 in Guangzhou is caused by the dengue type 1 virus.TaqMan MGB real-time PCR assay is rapid and sensitive to detect dengue virus infections.