Since 1978, China has fully implemented planned immunization. 45 years of immunization program to include 14 types of vaccines to prevent 15 diseases.
incidence of preventable infectious diseases in China has dropped to a historical low. China has interrupted the transmission of indigenous poliovirus. After universal vaccination against newborns against hepatitis B, the carrier rate of hepatitis B virus among children under 5 years of age has dropped from 1992.9% in 7 to 2014. Nearly 3000 million fewer children infected with hepatitis B Virus.