1. Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon 39660, Korea.
2. Gangwondo Livestock & Veterinary Service, Chuncheon 24203, Korea.
3. Chung Cheongbukdo Livestock & Veterinary Service, Jungbu-Branch, Chungju 27336, Korea.
4. College of Veterinary Medicine, Kyungpook National University, Daegu 41566, Korea.