Abstract
Vaccination is an effective public health tool to reduce the incidence, severity, and mortality of infectious diseases and protect the health of individuals. In 2023, the Republic of Korea (ROK) has introduced the rotavirus vaccine as a mandatory vaccination, providing 19 types of vaccines for children, adolescents, pregnant women, and the elderly. ROK achieves a higher vaccination rate annually than other countries; therefore, it has effectively fought infectious diseases, such as measles. Recently, there have been discussions on expanding the scope of essential vaccination support.