Orapun Arjkumpa1, Minta Suwannaboon1, Manoch Boonrawd1, Issara Punyawan1, Patchariya Laobannu2, Sawai Yantaphan2, Adundech Bungwai3, Vaiyavet Ponyium3, Nutthakarn Suwankitwat4, Prakit Boonpornprasert4, Bundit Nuansrichay4, Sarayuth Kaewkalong5, Dilok Ounpomma6, Waroonsiri Charoenlarp7, Nuttavadee Pamaranon7, Rotchana Prakotcheo7, Noppawan Buameetoop7, Veerasak Punyapornwithaya8, Tapanut Songkasupa4. 1. Animal Health Section, The 4th Regional Livestock Office, Department of Livestock Development, Khon Kaen, Thailand. 2. Animal Health Section, Roi-Et Provincial Livestock Office, Department of Livestock Development, Roi-Et, Thailand. 3. Pha Nom Phrai District Livestock Office, Department of Livestock Development, Roi-Et, Thailand. 4. Virology Section, Department of Livestock Development, National Institute of Animal Health, Bangkok, Thailand. 5. Epidemiology Section, Department of Livestock Development, National Institute of Animal Health, Bangkok, Thailand. 6. Virology Section, Veterinary Research and Development Center (Upper Northeastern Region), Department of Livestock Development, Khon Kaen, Thailand. 7. Bureau of Disease Control and Veterinary Services, Department of Livestock Development, Bangkok, Thailand. 8. Veterinary Public Health and Food Safety Centre for Asia Pacific (VPHCAP), Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, Thailand.