1. Division of Emerging Infectious Diseases, Bureau of Infectious Diseases Diagnosis Control, Korea Disease Control and Prevention Agency (KDCA), Cheongju-si, Republic of Korea.
2. Epidemiological Investigation Team, Epidemiological Investigation and Analysis Task Force, Korea Disease Control and Prevention Agency (KDCA), Cheongju-si, Republic of Korea.
3. Honam Regional Center for Disease Control and Prevention, Gwangju-si, Republic of Korea.
4. Gwangju Metropolitan Government, Gwangju-si, Republic of Korea.