Duplex real-time qRT-PCR for the detection of hepatitis A virus in water and raspberries using the MS2 bacteriophage as a process control.

Abstract:

:Hepatitis A virus (HAV) infection is the leading worldwide cause of acute viral hepatitis. An important aspect of viral control is rapid diagnosis. Epidemiological studies have linked hepatitis A outbreaks to the consumption of drinking water or soft fruits exposed to faecal contamination. Real-time reverse transcriptase PCR (qRT-PCR) is now widely used for detecting RNA viruses in food samples. Efficiency of viral concentration, nucleic acid extraction and the presence of potential inhibitors of the RT-PCR reaction must be monitored to prevent false negative results. In this study, the MS2 bacteriophage used as a process control was detected simultaneously with HAV in a one-step duplex real-time qRT-PCR. The assay was developed for testing water and raspberries. Adding MS2 showed no loss of sensitivity for HAV detection in water and raspberry samples. The limit of detection of HAV with this new approach was 10PFU for 1.5L of bottled water, 100PFU for 1.5L of tap water, 50PFU for 25g of fresh raspberries and 100PFU for 25g of frozen raspberries. The data show that the MS2 offers a very reliable and simple way to monitor false-negative results, making it a valuable tool in the routine diagnostics laboratory.

journal_name

J Virol Methods

authors

Blaise-Boisseau S,Hennechart-Collette C,Guillier L,Perelle S

doi

10.1016/j.jviromet.2010.02.017

subject

Has Abstract

pub_date

2010-06-01 00:00:00

pages

48-53

issue

1-2

eissn

0166-0934

issn

1879-0984

pii

S0166-0934(10)00056-X

journal_volume

166

pub_type

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