1. Virus Research Center, Clinical Research Division Sendai Medical Center Sendai Japan
2. Department of Respiratory Medicine Tohoku University Graduate School of Medicine Sendai Japan
3. Department of Infectious Diseases, Faculty of Medicine Yamagata University Yamagata Japan
4. Laboratory of Microbiology, Faculty of Veterinary Medicine Hokkaido University Sapporo Japan
5. Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI‐CoRE) Hokkaido University Sapporo Japan
6. Research Center for Zoonosis Control Hokkaido University Sapporo Japan