Childhood immunization coverage has shown gradual improvement worldwide despite ongoing conflicts, vaccine hesitancy, and health system challenges. In 2025, around 90% of infants globally received at least one dose of the diphtheria, tetanus, and pertussis (DTP) vaccine, while 85% completed the full three-dose series.
However, global vaccination coverage remains slightly below pre-pandemic levels. Although countries have made progress, overall coverage has stayed within a narrow range for more than a decade, highlighting the need for stronger and more consistent immunization efforts.
Millions of Children Still Miss Essential Vaccines
Despite improvements, millions of children continue to miss life-saving vaccines. In 2025, an estimated 13.5 million children received no vaccines during their first year of life. Although this number declined by nearly 750,000 compared with the previous year, many children remain unprotected.
Furthermore, millions of infants who start their vaccination schedules do not complete them. This gap increases the risk of outbreaks of preventable diseases, particularly measles, which requires high vaccination coverage to prevent widespread transmission.
Conflict and Inequality Affect Immunization Efforts
Children living in fragile and conflict-affected regions face the greatest barriers to vaccination. More than half of the world’s zero-dose children live in these settings, where political instability, displacement, insecurity, and limited healthcare resources disrupt routine immunization programmes.
For example, some countries have experienced significant declines in vaccination coverage because health systems struggle to reach vulnerable communities. At the same time, other countries have demonstrated that progress is possible when governments and health partners improve access to healthcare services.
WHO Highlights the Need for Stronger Global Action
As per a WHO news release, WHO and UNICEF reported that childhood immunization coverage is moving forward, but major challenges continue to threaten progress. The organizations emphasized the importance of rebuilding public trust, expanding vaccination access, improving health data systems, and ensuring sustainable funding for immunization programmes.
Moreover, health authorities warned that misinformation, funding shortages, and weakened healthcare systems could slow progress and increase the risk of preventable disease outbreaks.
Building a Future Where Every Child Is Protected
Over the past 25 years, global efforts by governments, communities, and health organizations have helped reduce the number of children missing vaccines. However, continued investment remains essential to ensure that every child receives timely protection against preventable diseases.
Therefore, WHO and UNICEF have called for stronger immunization programmes, better disease surveillance, increased funding, and targeted efforts to reach children in vulnerable communities. By strengthening these areas, countries can move closer to achieving universal access to life-saving vaccines.