Morphological and molecular characteristics of Echinococcus multilocularis and Echinococcus granulosus mixed infection in a dog from Xinjiang, China

Veterinary Parasitology
Yalou ZhangHao Wen

Abstract

The Xinjiang plateau of western China has been shown to have a high prevalence for human cystic echinococcosis (CE) caused by Echinococcus granulosus, and human alveolar echinococcosis (AE) caused by Echinococcus multilocularis. The domestic dog is suspected to be the primary definitive host for the transmission of both E. granulosus and E. multilocularis to humans in this locality. Seventeen of 30 stray dogs from Hejing County of Xinjiang were found positive for E. granulosus post mortem, and one double infection was suspected. Worm samples were collected, dyed by carmine, and observed microscopically. Carmine staining examination clearly revealed the differences in number of proglottids and appearance of uterine branches and lateral genital pore for those two species of Echinococcus. Furthermore, gene target DNA fragments were amplified for formal identification of the two parasite species, based on 12s rRNA mitochondrial gene. The PCR products were purified and sequenced. Compared with NCBI GenBank, the DNA sequences demonstrated 100% identity with E. granulosus (sheep strain, G1 genotype) and E. multilocularis.

References

Dec 13, 2005·Transactions of the Royal Society of Tropical Medicine and Hygiene·Yu Rong YangDonald P McManus
Dec 13, 2005·Parasitology International·Philip S Craig, UNKNOWN Echinococcosis Working Group in China
Nov 28, 2006·Bulletin of the World Health Organization·Yu Rong YangDonald P McManus

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Citations

Apr 12, 2016·Journal of Parasitic Diseases : Official Organ of the Indian Society for Parasitology·Mohey Abdelhafez HassanainFathia Abdelrazik M Khalil
Oct 19, 2013·Parasitology·Janna M SchurerEmily J Jenkins
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Oct 28, 2009·PLoS Neglected Tropical Diseases·Wenbao ZhangJincheng Wang
Mar 29, 2019·Vector Borne and Zoonotic Diseases·Mohammad Reza LashkarizadehMajid Fasihi Harandi
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Sep 11, 2018·The Korean Journal of Parasitology·Bin YanYuanzhi Wang

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