In recent years, progress has been slow in increasing the number of children who receive vaccines. Despite small gains, the overall rate of immunization remains lower than it was a few years ago. 5 million, have not received any vaccinations.

This is a concern for health officials, as it leaves these children vulnerable to serious diseases. Further information on this issue can be found through organizations such as UNICEF and the World Health Organization, which track and report on global immunization trends.