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Clinical evaluation of real-time PCR assays for rapid diagnosis of SARS coronavirus during outbreak and post-epidemic periods.

Identifieur interne : 002813 ( PubMed/Curation ); précédent : 002812; suivant : 002814

Clinical evaluation of real-time PCR assays for rapid diagnosis of SARS coronavirus during outbreak and post-epidemic periods.

Auteurs : W C Yam [République populaire de Chine] ; K H Chan ; K H Chow ; L L M. Poon ; H Y Lam ; K Y Yuen ; W H Seto ; J S M. Peiris

Source :

RBID : pubmed:15797361

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English descriptors

Abstract

The protocols of WHO network laboratories facilitated development of rapid diagnosis for SARS coronavirus (CoV) using reverse transcription (RT)-PCR assays. However, several reports have shown that conventional and real-time PCR assays were very specific for SARS CoV but lack sensitivity depending on the assay, specimen, and time course of disease.

DOI: 10.1016/j.jcv.2004.09.029
PubMed: 15797361

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<term>Reagent Kits, Diagnostic</term>
<term>Reverse Transcriptase Polymerase Chain Reaction</term>
<term>SARS Virus (genetics)</term>
<term>SARS Virus (isolation & purification)</term>
<term>Sensitivity and Specificity</term>
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<term>Severe Acute Respiratory Syndrome (virology)</term>
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<term>Facteurs temps</term>
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<term>Sensibilité et spécificité</term>
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<term>Severe Acute Respiratory Syndrome</term>
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<term>SARS Virus</term>
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<term>Virus du SRAS</term>
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<term>SARS Virus</term>
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<term>Severe Acute Respiratory Syndrome</term>
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<div type="abstract" xml:lang="en">The protocols of WHO network laboratories facilitated development of rapid diagnosis for SARS coronavirus (CoV) using reverse transcription (RT)-PCR assays. However, several reports have shown that conventional and real-time PCR assays were very specific for SARS CoV but lack sensitivity depending on the assay, specimen, and time course of disease.</div>
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<Month>07</Month>
<Day>19</Day>
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<Year>2020</Year>
<Month>04</Month>
<Day>02</Day>
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<ISSN IssnType="Print">1386-6532</ISSN>
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<Volume>33</Volume>
<Issue>1</Issue>
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<Month>May</Month>
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<Title>Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology</Title>
<ISOAbbreviation>J. Clin. Virol.</ISOAbbreviation>
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<ArticleTitle>Clinical evaluation of real-time PCR assays for rapid diagnosis of SARS coronavirus during outbreak and post-epidemic periods.</ArticleTitle>
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<MedlinePgn>19-24</MedlinePgn>
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<AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">The protocols of WHO network laboratories facilitated development of rapid diagnosis for SARS coronavirus (CoV) using reverse transcription (RT)-PCR assays. However, several reports have shown that conventional and real-time PCR assays were very specific for SARS CoV but lack sensitivity depending on the assay, specimen, and time course of disease.</AbstractText>
<AbstractText Label="OBJECTIVE" NlmCategory="OBJECTIVE">To evaluate an automatic nucleic acid extraction system and two standardized real-time PCR assays for rapid diagnosis of SARS CoV during outbreak and post-epidemic periods in Hong Kong.</AbstractText>
<AbstractText Label="STUDY DESIGN" NlmCategory="METHODS">Specimens from clinically suspected SARS patients collected during outbreak and post-epidemic periods were tested by an automatic nucleic acid extraction system followed by our first generation conventional RT-PCR and two standardized real-time PCR assays (Artus GmbH, Germany and Roche Diagnostics, Germany). Paired serum samples were assayed for increasing titer against SARS CoV.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">In the SARS epidemic, Artus and Roche PCR assays exhibited sensitivities of 87% and 85% for respiratory specimens (n = 64), 91% and 88% for stool (n = 44), and 82% for urine (n = 29). A specificity of 100% was exhibited by both PCR assays except Artus attained only a 92% specificity for stool. For post-epidemic period, no SARS CoV was identified among 56 respiratory specimens by all PCR assays. Inhibitors to PCR assays were detected at an average rate of 7-8% among 202 clinical specimens.</AbstractText>
<AbstractText Label="CONCLUSION" NlmCategory="CONCLUSIONS">This study highlights the high throughput and performance of automatic RNA extraction in coordination with standardized real-time PCR assays suitable for large-scale routine diagnosis in case of future SARS epidemic. As no SARS CoV was detected among specimens collected during post-epidemic period, the positive predictive value of real-time PCR assays for detection of SARS CoV during low epidemic requires further evaluation.</AbstractText>
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<LastName>Yam</LastName>
<ForeName>W C</ForeName>
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