Childhood immunization rates have seen a slight improvement globally, with 90% of infants receiving at least one dose of the DTP vaccine and 85% completing the full three-dose series by 2025. However, this progress is overshadowed by the persistent issue of 'zero-dose' children, who did not receive any vaccines in their first year, and the ongoing challenges in maintaining high immunization coverage. The COVID-19 pandemic has had a significant impact, causing a drop in global vaccination rates, but efforts by governments and health workers have helped to bounce back. Yet, the world is still far from achieving the goal of ensuring vaccines reach everyone, everywhere, at every age, as outlined in the Immunization Agenda 2030 (IA2030).
Personally, I find it fascinating that despite the progress, the global coverage remains one percentage point below 2019 levels, indicating a slow and uneven recovery. The data also reveals a stark contrast between regions, with the Americas and South-East Asia fully recovering and improving their performance, while Africa, the Eastern Mediterranean, and Europe still lag behind pre-pandemic levels. This highlights the need for targeted interventions in specific regions to address the underlying causes of low immunization coverage.
One thing that immediately stands out is the impact of conflict and fragile settings on immunization programs. More than half of all zero-dose children live in these settings, which account for only a third of the world's child population. For example, Syria lost 6 percentage points on DTP1 coverage and 12 points on MCV1 in a single year due to political upheaval and insecurity. However, Sudan recorded the largest single-country gain globally, increasing DTP1 coverage by 35 percentage points and MCV1 coverage by 22 points, demonstrating the potential for improvement even in challenging environments.
What many people don't realize is that the progress made over the past 25 years is at risk due to cuts in international health financing and weakening investments in data systems. The full impact of these cuts is not yet reflected in the estimates, but the data systems needed to track the impact and protect against backsliding are showing strain. This raises a deeper question: How can we ensure sustained progress in childhood immunization when the very foundations that enabled it are under threat?
From my perspective, the answer lies in strengthening immunization in conflict and fragile settings, countering false and misleading health information, and increasing and sustaining domestic and global funding for immunization programs and partnerships. Additionally, investing in stronger data and disease surveillance systems is crucial to driving and guiding high-impact immunization program strengthening efforts. By addressing these challenges, we can make significant strides towards achieving the IA2030 goal and ensuring that every child, regardless of their circumstances, has access to the lifegiving protection that vaccines provide.
