Herd immunity is a situation where most people are protected/immune to certain diseases. Through herd immunity, there will be an indirect effect, namely the protection of vulnerable groups of people and not being the target of vaccination. This condition can only be achieved with high and equitable vaccination coverage.

What is the evidence that vaccination can stop the spread of infectious diseases?

• Vaccination is not only aimed at breaking the chain of disease transmission and stopping the outbreak, but also in the long term to eliminate and even eradicate the disease itself.
• Indonesia has a long history of efforts to control infectious diseases by vaccination or immunization. Indonesia also contributes to the prevention of diseases on earth through vaccination. For example, since smallpox immunization was first announced in 1956, finally smallpox could be eradicated, namely it was destroyed or eliminated worldwide in 1974 so that the implementation of smallpox immunization was stopped in 1980. Likewise with polio, since polio immunization was first launched in 1980, Indonesia finally achieved polio-free in 2014. Currently, the world, including Indonesia, is in the process of eradicating polio, which is targeted at 2023.
  Another example is Indonesia, with its intensive efforts to provide tetanus immunization to infants and children (through the DPTHB-Hib DT and Td vaccines) and to women of childbearing age (Td vaccines), Indonesia finally achieved the status of maternal and neonatal tetanus elimination in 2016.