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Published on: February 14, 2020
Echinococcus Infection and Metacestode Fertility in Yaks and Sheep - Four Provincial-Level Administrative Divisions,
Qiufeng Lan1, Zhuoma Bianba2, Xiaojin Mo1
1National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Shanghai, China.
What Is Already Known About This Topic?:
Echinococcosis is a parasitic zoonosis caused by the larval stage of cestode species belonging to the genus Echinococcus, which is highly prevalent in northwestern China. Echinococcus spp. includes numerous species/genotypes that have different infectivity and parasitism patterns in livestock hosts, potentially affecting the transmission dynamics of the parasite.
What Is Added By This Report?:
In four PLADs of China, the prevalence of Echinococcus was 16.5% in yaks and 9.41% in sheep. The predominant species/genotype was E. granulosus s.s. (G1/G3), which mainly infected sheep liver and yak lung. However, fertile cysts were more frequent in sheep than in yaks.
What Are The Implications For Public Health Practice?:
Understanding the livestock infection rate, prevalent species/genotypes, and cyst fertility is essential for elucidating the mechanisms of Echinococcus transmission and pathogenesis. This knowledge lays the foundation for developing accurate prevention and control strategies.
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