1. Alexey Clara, MD, MPH, is an Epidemiologist, Global Health Sciences, the Division of Viral Diseases; National Center for Immunization and Respiratory Diseases; Centers for Disease Control and Prevention (CDC), Atlanta, Georgia.
2. Anh T. P. Dao, MPH, is GHSA Surveillance Officer, Surveillance & Response Team, the Division of Global Health Protection, US CDC, U.S. Embassy Annex, Hanoi, Vietnam.
3. Trang T. Do, PhD, is Surveillance & Response Team Lead, the Division of Global Health Protection, US CDC, U.S. Embassy Annex, Hanoi, Vietnam.
4. Phu D. Tran, PhD, is General Director, and Quang D. Tran, PhD, is EBS focal point, Communicable Disease Control Division; both are in the General Department of Preventive Medicine, Vietnam Ministry of Health, Hanoi, Vietnam.
5. Nghia D. Ngu, PhD, is Acting Head, and Tu H. Ngo, MPM, is a Researcher; both in the Department of Communicable Disease Prevention and Control, National Institute of Hygiene and Epidemiology, Hanoi, Vietnam.
6. Hung C. Phan, MD, and Thuy T. P. Nguyen, MD, are Researchers, Department of Communicable Diseases Prevention and Control Pasteur Institute in Ho Chi Minh City, Vietnam.
7. Christina Bernadotte-Schmidt, MPH, is a Monitoring, Evaluation and Learning Officer, Results Management, Measurement, and Learning, PATH, Seattle, Washington.
8. Huyen T. Nguyen, MSPH, BPharm, is Senior M&E Officer, Global Health Security Partnership, PATH, Hanoi, Vietnam.
9. Karen Ann Alroy, DVM, MPH, is an Epidemiologist Global Health Sciences, the Division of Viral Diseases; National Center for Immunization and Respiratory Diseases; Centers for Disease Control and Prevention (CDC), Atlanta, Georgia.
10. S. Arunmozhi Balajee, PhD, is Associate Director for Global Health Sciences, Office of the Director, the Division of Viral Diseases; National Center for Immunization and Respiratory Diseases; Centers for Disease Control and Prevention (CDC), Atlanta, Georgia.
11. Anthony W. Mounts, MD, is Country Director, Division of Global Health Protection, US CDC, Hanoi, Vietnam.