1. Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Shiga, Japan
2. Exotic Disease Inspection Division, Laboratory Department, Animal Quarantine Service, Ministry of Agriculture, Forestry and Fisheries, Tokoname, Aichi, Japan
3. Laboratory of Microbiology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
4. Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, Hokkaido, Japan
5. National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, Nagasaki, Japan
6. Research Center for Zoonosis Control, Hokkaido University, Sapporo, Hokkaido, Japan