Glanders is a contagious and fatal equine disease caused by the gram-negative bacterium Burkholderia mallei. B. mallei is prevalent among horse populations in Asia, the Middle East, and South America. More than four million horses have been registered in Mongolia in 2020. However, the resent prevalence of glanders has not been well investigated. In this study, we aimed to investigate the seropositivity of B. mallei in horse populations in Mongolia using the complement fixation test (CFT) and Rose Bengal plate agglutination test (RBT). We randomly collected blood samples from horses in central and eastern Mongolia between 2018 and 2019. Of 337 horses, 26 (7.7%) and 28 (8.3%) were seropositive using RBT and CFT, respectively. Interestingly, seropositivity in horses resulting from crossbreeding of Mongolian native horses with thoroughbred horses was higher than that in Mongolian native horses. Our observations suggest that equine glanders are still endemic to Mongolia.

The reindeer (Rangifer tarandus, Linnaeus, 1758) are semidomesticated animals in northern Mongolia.  The main aim of this study was to estimate the prevalence of Eimeria spp. in semidomecticated reindeer in Mongolia. Assessments of eimeria parasitism among these reindeers were based on fecal examination and morphological identification of coccidian oocysts. Individual fecal samples collected from the reindeer were examined using modified Wisconsin and McMaster methods. Eimeria oocysts were detected in 57.37 % and identified Eimeria mayeri, Eimeria tarandina from reindeer in Mongolia. Цаа буганаас Eimeria Spp. илрүүлсэн дүн Цаа буга (Rangifer tarandus, Linnaeus, 1758) Хөвсгөл аймгийн Цагааннуур сумын нутагт тархжээ. Энэхүү судалгааны хүрээнд бид гэрийн тэжээвэр цаа бугын сүрэгт Eimeria spp. төрлийн эгэл биетний тархалтыг тогтоох зорилго тавин ажиллалаа. Кокцидын төрөл, зүйлийг бичил харуураар шинжилж хэлбэр зүйг үндэслэн таних түлхүүрийг ашиглан тодорхойлов. Баасны сорьц тус бүрийг боловсронгуй болгосон Wisconsin болон McMaster нарын нийтэд хэрэглэгддэг аргаар шинжлэв.  Бидний шинжилсэн дээжний 57.37 % (35/61) нь Eimeria spp. ооцистээр халдварласан байв. Цаа  буганд  Eimeria mayeri, Eimeria tarandina  зүйлийн кокцидоз үүсгэгч тархсан байна.  Түлхүүр үг: кокцид, баасны сорьц, сахарын ханасан уусмал, хөвүүлэх арга