1. Infectious Diseases Control Division, Health Service Bureau, Ministry of Health, Labour and Welfare, Tokyo, Japan.
2. Department of Emergency and Critical Care Medicine, University of St. Marianna School of Medicine Yokohama City Seibu Hospital, Yokohama, Japan.
3. Department of Infectious Diseases, National Center for Child Health and Development, Tokyo, Japan.
4. Emerging and Re-Emerging Infectious Diseases Unit, National Institute for Infectious Diseases Lazzaro Spallanzani, Rome, Italy.
5. Department of Internal Medicine, Japanese Red Cross Kumamoto Hospital, Kumamoto, Japan.
6. Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan.
7. Department of Healthcare Epidemiology, University of Kyoto School of Medicine, Kyoto, Japan.
8. AIDS Clinical Center, National Center for Global Health and Medicine, Tokyo, Japan.
9. Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan.
10. Health Science Division, Minister’s Secretariat, Ministry of Health, Labour and Welfare, Tokyo, Japan.
11. Coordination Office of Measures on Emerging Infectious Diseases, Cabinet Secretariat, Tokyo, Japan.