1. Institute for Clinical Research in Tropical Medicine, Hanoi, VietnamBach Mai Hospital, Hanoi, VietnamPrimary coauthor.
2. Centers for Disease Control and Prevention, Atlanta, Georgia, USAPrimary coauthor.
3. Bach Mai Hospital, Hanoi, Vietnam
4. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
5. National Institute for Hygiene and Epidemiology, Hanoi, Vietnam
6. Communicable Disease Surveillance and Response, World Health Organization (WHO), Geneva, Switzerland
7. Communicable Disease Surveillance and Response, WHO, Hanoi, Vietnam
8. Curtin University of Technology, Perth, Australia