Rhodococcus equi pneumonia in foals in Gyeonggi-do and characterization of the isolates from lesions and environment
2008
Kim, S.J. (Asan Branch of Chungnam Veterinary Research Institute, Asan, Republic of Korea) | Yook, S.Y. (Asan Branch of Chungnam Veterinary Research Institute, Asan, Republic of Korea) | Hwang, J.S. (JnC Equine Clinic, Icheon, Republic of Korea) | You, M.J. (Chonbuk National University, Jeonju, Republic of Korea) | Jun, M.H. (Chungnam National University, Daejeon, Republic of Korea), E-mail: mhjun@cnu.ac.kr
We report here two cases of Rhodococcus (R.) equi-causing pneumonia of Throughbred foals in Gyeonggi-do in 2006. R. equi was isolated from the lung lesions of the dead foals, and from the feces and soils on the farms where the clinical cases of R. equi infection occurred. The isolates were characterized by biochemical properties, polymerase chain reaction for vapA gene and antimicrobial susceptibility. In drug susceptibility test, erythromycin, gentamycin, vancomycin, and rifampin were found to be the most susceptible for all isolates. These results suggest that R. equi pneumonia may be endemic in the horse-breeding farms in inland Korea and the farm environment may be widely contaminated with virulent R. equi.
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