One of the best approaches for reducing infectious disease prevalence and promoting better public health globally is vaccination. Immunization programs also try to target vaccine reluctance, enhance the vaccination coverage rate, and remove disparities in vaccine distribution. Booster doses for diseases like influenza and COVID-19 will also be part of all childhood immunization programs. It is most important to stop epidemics and preserve the health of populations; therefore, international collaboration is needed to increase immunization coverage rates, mainly in resource-constrained places.