China implemented a child immunization program in 1978 which is steadily expanding. In early 2017, there were 43 approved vaccine companies, accounting for 40% of the global vaccine production enterprises. About 300 companies are involved in vaccine R&D, including research on DNA and cancer vaccines. Vaccine enterprises are mainly concentrated in Beijing, Tianjin, Jiangsu, Shanghai, Guangdong and Sichuan. A detailed analysis is available in Chinese.
China Bio news release, September 25, 2017