Prevalence of echinococcosis in dog populations in some provinces of Mongolia

Abstract

Introduction: According to D.Temuulen (2020), human cystic Echinococcosis prevalence is 2.0-13.1% of the rural areas of Mongolia, depending on the geographical region. Patients with lower education, such as children and the elderly, have been reported to be at higher risk of contracting the disease, and this fact has led us to do a study of the prevalence of Echinococcosis dogs, a source of infection. Purpose: To study the helminth fauna of the Mongolian dog population, to identify zoonotic helminths, and to study the prevalence of echinococcosis. Materials and methods: The helminth fauna of domestic dogs originated from Bayan-Ulgii, Sukhbaatar, Khuvsgul and Umnugovi province, representing four geographical regions of Mongolia, was detected by microscopic analysis, and the species composition was determined. In the case of Taeniidae infection, the molecular biological analysis was performed to differentiate the species and genotypes composition and pattern of the disease in dogs. Results: There were 557 dogs overall that we surveyed and we detected Taenia hydatigena 10.9%, Echinococcus granulosus (E.granulosus) 3.4%, Echinococcus sanadensis (E.sanadensis) 4.1%, Toxocara sanis 3.4%, Strongyloides canis 2.7%, Ascaris 3.2%, Trichurus vulpis 2.3%, Alaria sanis 2.0%, Oncicola canis 1.4%, and Macracanthorhynchus catulinus 2.7% in them. E.granulosus G1 and E.sanadensis G6/7 genotype are prevalent in the Mongolian dog population. Conclusion: The helminth fauna of the dog population consists of 1 genus and 9 species of helminths. Five of these species are zoonotic pathogens. The prevalence of echinococcosis among dogs is 5.3% in Bayan-Ulgii province, 5.0% in Khuvsgul province, 9.6% in Umnugovi province, and 8.1% in Sukhbaatar province. Infections in dogs are caused by G6 / G7 of E. sanadensis and G1 of E. granulosus.