1. WHO WPRO Regional Reference Measles/Rubella Laboratory and State Key Laboratory for Molecular Virology and Genetic Engineering, National Institute for Viral Disease Control and Prevention, Beijing, People's Republic of China
2. Centers for Disease Control and Prevention, Atlanta, Georgia
3. Anhui Provincial Center for Disease Control and Prevention, Hefei, People's Republic of China
4. Henan Provincial Center for Disease Control and Prevention, Zhengzhou, People's Republic of China
5. Shandong Provincial Center for Disease Control and Prevention, Jinan, People's Republic of China
6. Chongqing Provincial Center for Disease Control and Prevention, Chongqing, People's Republic of China
7. Sichuan Provincial Center for Disease Control and Prevention, Chengdu, People's Republic of China
8. Liaoning Provincial Center for Disease Control and Prevention, Shenyang, People's Republic of China
9. Qinghai Provincial Center for Disease Control and Prevention, Xining, People's Republic of China
10. Hainan Provincial Center for Disease Control and Prevention, Haikou, People's Republic of China
11. Ningxia Provincial Center for Disease Control and Prevention, Yinchuan, People's Republic of China
12. Jiangxi Provincial Center for Disease Control and Prevention, Nanchang, People's Republic of China
13. Shanxi Provincial Center for Disease Control and Prevention, Taiyuan, People's Republic of China
14. Hebei Provincial Center for Disease Control and Prevention, Shijiazhuang, People's Republic of China
15. Hunan Provincial Center for Disease Control and Prevention, Changsha, People's Republic of China