Development of a multiplex real-time RT-PCR assay for simultaneous detection and differentiation of influenza A, B, C, and D viruses

H. Zhang, Yin Wang, Elizabeth Porter, Nanyan Lu, Yanhua Li, Fangfeng Yuan, M. Lohman, L. Noll, Wanglong Zheng, C. Stoy, Yuekun Lang, Victor C. Huber, Wenjun Ma, Lalitha Peddireddi, Ying Fang, J. Shi, Gary Anderson, Xuming Liu, Jianfa Bai

Research output: Contribution to journalArticlepeer-review

Abstract

Influenza is a common and contagious respiratory disease caused by influenza A, B, C, and D viruses (IAV, IBV, ICV, and IDV). A multiplex real-time RT-PCR assay was developed for simultaneous detection of IAV, IBV, ICV, and IDV. The assay was designed to target unique sequences in the matrix gene of IBV and ICV, the RNA polymerase subunit PB1 of IDV, and combined with USDA and CDC IAV assays, both target the matrix gene. The host 18S rRNA gene was included as an internal control. In silico analyses indicated high strain coverages: 97.9% for IBV, 99.5% for ICV, and 100% for IDV. Transcribed RNA, viral isolates and clinical samples were used for validation. The assay specifically detected target viruses without cross-reactivity, nor detection of other common pathogens. The limit of detection was approximately 30 copies for each viral RNA template, which was equivalent to a threshold cycle value of ~37.

Original languageEnglish (US)
Pages (from-to)59-66
Number of pages8
JournalDiagnostic Microbiology and Infectious Disease
Volume95
Issue number1
DOIs
StatePublished - Sep 2019
Externally publishedYes

Keywords

  • Bovine
  • Influenza virus
  • Multiplex PCR
  • Real-time PCR
  • Swine

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases

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