Characterization of a Streptococcus equi ssp. equi Isolate From a Strangles Outbreak in Thailand |
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| Institution: | 1. Department of Microbiology, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Nong Chok, Bangkok, Thailand;2. Clinic for Horse, Faculty of Veterinary Medicine, Mahanakorn University of Technology, Nong Chok, Bangkok, Thailand;1. School of Science, University of Waikato, Hamilton, New Zealand;2. Animal Health Trust, Lanwades Park, Kentford, Newmarket CB8 7UU, United Kingdom;1. Instituto de Virología, CICVyA, INTA, Hurlingham, Buenos Aires, Argentina;2. Cátedra de Enfermedades Infecciosas, Escuela de Veterinaria, Universidad del Salvador, Pilar, Buenos Aires, Argentina;3. 108 Maxwell H. Gluck Equine Research Center, Department of Veterinary Science, University of Kentucky, Lexington, KY;1. National Institute of Laser Enhanced Sciences, Cairo University, 12613 Giza, Egypt;2. Department of Biochemistry, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt;3. Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, 12613 Giza, Egypt;4. Faculty of Science, Department of Chemistry, Taif University, Taif 21974, Saudi Arabia;1. MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China;2. National Research Center of Veterinary Biologicals engineering and Technology, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing, China;3. Poultry Institute, Chinese Academy of Agricultural Sciences, Yangzhou, China;4. Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China;1. Department of Clinical Sciences, Box 7054, 750 07 Uppsala, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, Uppsala, Sweden;2. National Veterinary Institute, SE-750 07 Uppsala, Sweden;1. Hubei Collaborative Innovation Center for Green Transformation of Bio-resources, College of Life Sciences, Hubei University, Wuhan, Hubei 430062, PR China;2. Hubei Tianzhong Stockbreeding Co. Ltd., Wuhan, Hubei 430344, PR China |
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| Abstract: | Strangles, which is caused by Streptococcus equi ssp. equi, is one of the major infectious respiratory diseases in horses. Knowledge of isolates from different areas of the world is important for investigating the different strains of the disease. In contrast to many other countries, currently little is known about S. equi ssp. equi isolates in Thailand. In 2014, a farm in Thailand imported 20 horses from Europe. Approximately 1 month after arrival, 50% of the horses had developed pyrexia, mucopurulent nasal discharge, and abscesses of the mandibular lymph nodes. Nasal swabs of mucopurulent discharge were sent to a diagnostic laboratory, and two isolates of S. equi ssp. equi were identified. One of the isolates was further characterized using seM gene polymerase chain reaction and sequence analysis. The seM sequence was then compared to the database of PubMLST-seM. It was found to contain SeM allele 48, an allele isolated from horses in the United Kingdom in 2006 and 2010. This result demonstrates the usefulness of SeM allele identification as a tool for investigating the source of related strains and for the epidemiologic study of strangles. To the best of the authors' knowledge, this is the first report of the identification of an SeM allele of the S. equi ssp. equi isolate in Thailand. |
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| Keywords: | Strangles Thailand SeM allele |
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