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KMID : 0893420220230050075
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Journal of Veterinary Science
2022 Volume.23 No. 5 p.75 ~ p.75
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Epidemiological investigation of equine hindlimb ataxia with Setaria digitata in South Korea
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Hwang Hye-Shin
Ro Young-Hye
Lee Hyun-Kyoung
Kim Ji-Hyeon
Lee Kyung-Hyun
Choi Eun-Jin
Bae You-Chan
So Byung-Jae
Kwon Do-Hoon
Kim Ho
Lee In-Hyung
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Abstract
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Background : Since 2013, the number of requests for diagnosis for horses based on neurological symptoms has increased rapidly in South Korea. The affected horses have commonly exhibited symptoms of acute seasonal hindlimb ataxia. A previous study from 2015?2016 identified Setaria digitata as the causative agent.
Objectives : This study is an epidemiological investigation to find out risk factors related to the rapid increase in hindlimb ataxia of horses due to aberrant parasites in South Korea.
Methods : An epidemiological investigation was conducted on 155 cohabiting horses in 41 horse ranches where the disease occurred. The surrounding environment was investigated at the disease-causing horse ranches (n = 41) and 20, randomly selected, non-infected ranches.
Results : Hindlimb ataxia was confirmed in nine cohabiting horses; this was presumed to be caused by ectopic parasitism. Environments that mosquitoes inhabit, such as paddy fields within 2 km and less than 0.5 km from a river, had the greatest association with disease occurrence.
Conclusions : Most horse ranches in South Korea are situated in favorable environments for mosquitoes. Moreover, the number of mosquitoes in the country has increased since 2013 due to climate change. Additional research is required; however, these data show that it is necessary to establish guidelines for the use of anthelmintic agents based on local factors in South Korea and disinfection of the environment to prevent disease outbreaks.
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KEYWORD
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Epidemiology, ataxia, horses, mosquito vectors, setaria nematode
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