Riems Influenza a Typing Array (RITA): An RT-qPCR-based Low Density Array for Subtyping Avian and Mammalian Influenza a Viruses

Overview

Journal Sci Rep

Specialty Science

Date 2016 Jun 4

PMID 27256976

Citations 71

Authors

Bernd Hoffmann

Donata Hoffmann

Dinah Henritzi

Martin Beer

Timm C Harder

Affiliations

Soon will be listed here.

Abstract

Rapid and sensitive diagnostic approaches are of the utmost importance for the detection of humans and animals infected by specific influenza virus subtype(s). Cascade-like diagnostics starting with the use of pan-influenza assays and subsequent subtyping devices are normally used. Here, we demonstrated a novel low density array combining 32 TaqMan(®) real-time RT-PCR systems in parallel for the specific detection of the haemagglutinin (HA) and neuraminidase (NA) subtypes of avian and porcine hosts. The sensitivity of the newly developed system was compared with that of the pan-influenza assay, and the specificity of all RT-qPCRs was examined using a broad panel of 404 different influenza A virus isolates representing 45 different subtypes. Furthermore, we analysed the performance of the RT-qPCR assays with diagnostic samples obtained from wild birds and swine. Due to the open format of the array, adaptations to detect newly emerging influenza A virus strains can easily be integrated. The RITA array represents a competitive, fast and sensitive subtyping tool that requires neither new machinery nor additional training of staff in a lab where RT-qPCR is already established.

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