Molecular and serological surveillance of equine piroplasmosis in the Republic of Korea between 2016 and 2017

Seo, Hyun; Kim, Keun Ho; Lee, Sang Kyu; Min, Subin; Lim, Ji Yeon; Yang, Sun Joo; Yoo, Mi Sun; Jung, Suk-Chan; Yoon, Sang-Hyub; Cho, Yun Sang

doi:10.22541/au.159527001.10291650

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“…Detection of E. chaffeensis , T. equi , and B. caballi from cattle grazing in ROK during 2010 and 2011 showed that 19.4%, 7.2%, and 0.35%, respectively, of the tick pools were positive for the three pathogens [ 27 ], and T. equi infections in horses have been serologically confirmed [ 28 ]. However, the three pathogens were not detected in ticks collected from horses and associated vegetation in the ROK during 2016 and 2017 in this study.…”

Section: Discussionmentioning

confidence: 99%

Molecular Detection and Phylogenetic Analysis of Tick-Borne Pathogens in Ticks Collected from Horses in the Republic of Korea

et al. 2021

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The horse industry has grown rapidly as a leisure industry in the Republic of Korea (ROK) in parallel with an increased demand for equestrian activities. As a result, there has been an increase in horse breeding and equestrian population and potential exposure to ticks and their associated pathogens. To provide a better understanding of the potential disease risks of veterinary and medical importance, a study was conducted to determine the geographical distribution and diversity of ticks collected from horses and vegetation associated with horse racetracks/ranches throughout the ROK. This included a survey of five associated common pathogens, Anaplasma phagocytophilum, Ehrlichia chaffeensis, Borrelia spp., Babesia caballi, and Theileria equi. A total 9220 ticks were collected from horses and associated pastures. Ticks were identified to species, stage of development, and sex. Two species of ticks, Haemaphysalis longicornis (99.9%) and Ixodes nipponensis (0.1%) were identified. Two of the target pathogens, A. phagocytophilum and Borrelia spp., were detected in 5/1409 tick pools (0.35%) and 4/1409 pools (0.28%) of H. longicornis, respectively, both of which are zoonotic pathogens of medical importance. The results of 16S rRNA phylogenetic analysis of A. phagocytophilum showed a close relationship to strains distributed in China, USA, Germany, Italy, Turkey, and Poland. Borrelia spp. showed a close relationship, based on 16S rRNA gene, to the strains reported from the USA (B. burgdorferi and B. americana) and Japan (B. tanukii and B. garinii). These results provide information about the potential risks of veterinary and medical importance and the development of mitigation strategies for disease prevention.

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Section: Discussionmentioning

confidence: 99%