1. Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan
2. Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
3. Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
4. Epidemiology Division, Department of Animal Health, Hanoi, Vietnam
5. National Centre for Veterinary Diagnostics, Department of Animal Health, Hanoi, Vietnam
6. United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan