In 2024, new data from the World Health Organization (WHO) revealed that a million more children completed the crucial three-dose vaccination against diseases like diphtheria, tetanus, and whooping cough compared to the previous year.

Despite this progress, significant shifts in funding, escalating global conflicts, and the spread of vaccine misinformation threaten to hinder or even reverse the advancements made, posing a serious threat.

Kate O'Brien, WHO's director of the Department of Immunization, Vaccines, and Biologicals, expressed concerns, stating, "We've encountered a stubborn barrier that is impeding our efforts to protect more children from vaccine-preventable diseases."

In 2024, approximately 115 million infants globally, accounting for 89 percent, received at least one dose of the DTP vaccine. Around 109 million children completed all three doses, providing protection against diphtheria, tetanus, and pertussis (whooping cough).

However, nearly 20 million infants missed at least one dose of the DTP-containing vaccine, including 14.3 million "zero-dose" children who had never received any vaccines.

This number exceeds the target for the year by 4 million to align with the goals of the Immunization Agenda 2030, according to the report.

Currently, the world is deviating from its objective, aiming to reduce the number of zero-dose children by half and achieve a minimum of 90 percent global immunization coverage.

Data indicates that a quarter of the world's infants reside in 26 countries affected by fragility, conflict, or humanitarian crises, yet they constitute half of all unvaccinated children worldwide.

In half of these countries, the population of unvaccinated children surged from 3.6 million in 2019 to 5.4 million in 2024.

O'Brien remarked, "We are observing early indications of regression and stagnation in vaccine coverage in various countries."

Despite the obstacles, countries have managed to expand vaccination programs for diseases like HPV, meningitis, pneumococcal disease, polio, and rotavirus.

In 2024, 31 percent of eligible adolescent girls globally received at least one dose of the HPV vaccine, a notable increase from the 17 percent coverage in 2019, although still below the 90 percent target by 2030.

While global measles coverage has improved, it remains significantly below the required 95 percent in all communities to prevent outbreaks.

Unicef Executive Director Catherine Russell emphasized, "We have succeeded in reaching more children with life-saving vaccines. However, millions of children still lack protection against preventable diseases, a cause for concern for us all."