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pISSN 2950-9114 eISSN 2950-9122
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Original Article

J Lab Med Qual Assur 2015; 37(3): 141-147

Published online September 30, 2015


Copyright © Korean Association of External Quality Assessment Service.

Detection of Bacterial and Viral Pathogens in Stool Specimens Using Multiplex PCR

Jeumsoon Lee, Juwon Kim, Hyunmi Cho, Kijin Oh, Young Uh, and Kap Jun Yoon

Department of Laboratory Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea

Correspondence to:Young Uh
Department of Laboratory Medicine, Wonju Severance Christian Hospital, 20 Ilsan-ro, Wonju 26426, Korea Tel: +82-33-741-1592
Fax: +82-33-731-0506
E-mail: u931018@yonsei.ac.kr

Received: March 26, 2015; Revised: July 26, 2015; Accepted: July 27, 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Background: The rapid and accurate detection of diarrheal pathogens is essential to prevent the spread of diarrheal diseases. Recently, a multiplex PCR assay was developed to simultaneously detect various bacterial and viral diarrheal pathogens. In this study, we investigated the frequency of detection of various potential pathogens causing diarrhea by using multiplex PCR and compared the results to the results of stool culture tests for bacteria and enzyme immunoassays (EIAs) for rotaviruses and Clostridium difficile toxin B (CDTB).
Methods: We retrospectively analysed the results for multiplex PCR, culture tests, and EIA obtained from stool specimens submitted to the laboratory from May 2013 to September 2014. Multiplex PCR was performed using the Seeplex diarrhea ACE detection kit (Seegene, Korea), which detects five viruses and eight bacteria.
Results: Among 890 stool specimens, 408 (45.8%) were found to be positive by PCR. The PCR positivity rate for bacteria and viruses was 31.1% (277/890) and 18.9% (161/890), respectively. The relative frequencies of microorganisms or toxins detected by PCR were, in decreasing order, CDTB 24.0%, Clostridium perfringens 20.6%, norovirus-GII 15.8%, rotavirus 11.3%, Campylobacter spp. 7.5%, enteric adenovirus 5.7%, and Salmonella spp. 5.1%. The concordance rate of the results obtained using the PCR and culture tests was 99.2% for Salmonella spp., 95.7% for Campylobacter spp., and. 79.8% for C. difficile . The concordance rates for rotaviruses and CDTB were 99.7% and 83.6%, respectively.
Conclusions: The multiplex PCR method showed a high detection rate and is useful for the simultaneous detection of various diarrheal pathogens.
(J Lab Med Qual Assur 2015;37:141-147)

Keywords: Diarrhea, Multiplex polymerase chain reaction, Culture, Immunoenzyme techniques

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