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Detection of human taeniases in Tibetan endemic areas, China

Published online by Cambridge University Press:  18 July 2013

TIAOYING LI ,
XINGWANG CHEN ,
TETSUYA YANAGIDA ,
HAO WANG ,
CHANGPING LONG ,
YASUHITO SAKO ,
MUNEHIR OKAMOTO ,
YUNFEI WU ,
PATRICK GIRAUDOUX  and
FRANCIS RAOUL
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TIAOYING LI*
Affiliation:
Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Chengdu 610041, Sichuan, China
XINGWANG CHEN
Affiliation:
Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Chengdu 610041, Sichuan, China
TETSUYA YANAGIDA
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
HAO WANG
Affiliation:
Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Chengdu 610041, Sichuan, China
CHANGPING LONG
Affiliation:
Yajiang County Centers for Disease Control and Prevention, Yajiang 627450, Sichuan, China
YASUHITO SAKO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
MUNEHIR OKAMOTO
Affiliation:
Primate Research Institute, Kyoto University, Inuyama, Aichi 484-8506, Japan
YUNFEI WU
Affiliation:
College of Veterinary Medicine, Sichuan Agricultural University, Yaan 625014, Sichuan, China
PATRICK GIRAUDOUX
Affiliation:
Chrono-environment lab, UMR 6249 University of Franche-Comté and CNRS, Besançon, France Institut Universitaire de France, Paris, France
FRANCIS RAOUL
Affiliation:
Chrono-environment lab, UMR 6249 University of Franche-Comté and CNRS, Besançon, France
AGATHE NKOUAWA
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
MINORU NAKAO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
PHILIP S. CRAIG
Affiliation:
School of Environment and Life Sciences, University of Salford, Greater Manchester, M5 4WT, UK
AKIRA ITO
Affiliation:
Department of Parasitology, Asahikawa Medical University, Asahikawa, Hokkaido 078-8510, Japan
*
*Corresponding author: Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, 6 Zhong Xue Road, Chengdu 610041, Sichuan Province, China. Tel: + 86 28 85589532. Fax: +86 28 85589563. E-mail: litiaoying@sina.com
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Summary

Detection of taeniasis carriers of Taenia solium is essential for control of cysticercosis in humans and pigs. In the current study, we assessed the positive detection rate of a self-detection tool, stool microscopy with direct smear and coproPCR for taeniasis carriers in endemic Tibetan areas of northwest Sichuan. The self-detection tool through questioning about a history of proglottid expulsion within the previous one year showed an overall positive detection rate of more than 80% for Taenia saginata, T. solium and T. asiatica. The positive detection rate was similar for T. saginata and T. solium. In 132 taeniid tapeworm carriers, 68 (51·5%) were detected by microscopy and 92 (69·7%) were diagnosed by coproPCR. A combination of microscopy and coproPCR increased the positive detection rate to 77·3%. There remained 10 cases (7·6%) coproPCR negative but microscopy positive. Due to the high cost and complicated process, coproPCR is required for the identification of Taenia species only when necessary, though it had a significant higher positive detection rate than microscopy. Combined use of self-detection and stool microscopy are recommended in community-based mass screening for taeniases in this Tibetan area or in other situation-similar endemic regions.

Keywords

Taeniasisself-detectionmicroscopycoproPCRdetection ratehuman carriers
Type
Research Article
Information
Parasitology , Volume 140 , Special Issue 13: Control of cestode zoonoses in Asia: role of basic and applied science , November 2013 , pp. 1602 - 1607
Copyright
Copyright © Cambridge University Press 2013 

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