Abstract
Echinococcosis is a zoonotic disease with great significance to public health, and appropriate detection and control strategies should be adopted to mitigate its impact. Most cases of echinococcosis are believed to be transmitted by the consumption of food and/or water contaminated with canid stool containing Echinococcus spp. eggs. Studies assessing Echinococcus multilocularis, Echinococcus granulosus sensu stricto, and Echinococcus shiquicus coinfection from contaminated water-derived, soil-derived, and food-borne samples are scarce, which may be due to the lack of optimized laboratory detection methods. The present study aimed to develop and evaluate a novel triplex TaqMan-minor groove binder probe for real-time polymerase chain reaction (rtPCR) to simultaneously detect the 3 Echinococcus spp. mentioned above from canid fecal samples in the Qinghai-Tibetan Plateau area (QTPA). The efficiency and linearity of each signal channel in the triplex rtPCR assay were within acceptable limits for the range of concentrations tested. Furthermore, the method was shown to have good repeatability (standard deviation ≤0.32 cycle threshold), and the limit of detection was estimated to be 10 copies plasmid/μl reaction. In summary, the evaluation of the present method shows that the newly developed triplex rtPCR assay is a highly specific, precise, consistent, and stable method that could be used in epidemiological investigations of echinococcosis.
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