Human Vaccines & Immunotherapeutics

Evidence-Based Optimization of Worldwide Childhood Vaccination Programs

Human Vaccines & Immunotherapeutics is pleased to welcome you to submit your research to the Article Collection "Evidence-Based Optimization of Worldwide Childhood Vaccination Programs".

Childhood vaccination programs form the backbone of global infectious disease prevention, yet uneven implementation and unmet coverage targets persist across low, middle, and high-income nations. This thematic Collection centres on evidence-based optimization of worldwide paediatric immunization frameworks, focusing on data driven adjustments to address systemic barriers limiting vaccine access and uptake. Global routine immunization systems face overlapping challenges including fragile supply chains, regional conflict disruptions, socioeconomic inequalities and widespread vaccine hesitancy, which collectively leave millions of children incompletely vaccinated each year. Conventional one size fits all immunization models often fail to fit local demographic and healthcare realities. Rigorous real-world research generates actionable evidence to tailor vaccination delivery, scheduling and outreach strategies. Against the backdrop of stagnating global child immunization progress, this topic explores how empirical data can reshape flexible, context appropriate vaccination programs to protect vulnerable child populations globally.

Evidence-based optimization of global childhood vaccination programs is critical to reversing decades of stalled immunization progress and safeguarding global child health. Standardized, unadjusted vaccination schemes cannot resolve deep-rooted disparities that leave millions of children under-immunized, raising risks of resurgent measles, polio and other preventable outbreaks that cross national borders. Data-driven strategy refinements cut unnecessary resource waste while maximizing vaccination coverage within limited healthcare budgets, especially in low and middle-income regions. Without targeted, evidence-backed improvements to delivery, outreach and policy design, global public health equity targets will remain unachievable. Optimized immunization systems also build long-term pandemic and conflict resilience, reducing child mortality and lessening the socioeconomic burden of infectious diseases on vulnerable communities worldwide.

This Collection focuses on evidence-led optimization of global childhood vaccination programs, with tightly aligned subtopics fitting public health research scope. Key themes include data-driven adjustment of immunization delivery models, targeted outreach strategies for under-vaccinated groups, supply chain optimization for paediatric vaccines, evidence-based interventions to mitigate vaccine hesitancy, and policy redesign for fragile or conflict-affected regions. It also covers cost-effectiveness evaluation of revised vaccination schedules and post-crisis immunization recovery frameworks. Preferred submissions include original population-based studies, cross-country comparative analyses, systematic reviews, intervention evaluations and policy briefs. Pure laboratory immunology research without population program optimization insights lies outside this Collection’s scope.

Keywords: Childhood vaccination; Immunization strategy optimization; Evidence-based public health; Global immunization coverage; Paediatric vaccine delivery

Meet the Guest Advisor

Dr. Xiang Sun holds a Doctor of Public Health and works as a Chief Physician at the Immunization Program Institute of Jiangsu Provincial Center for Disease Control and Prevention, as well as a postgraduate supervisor at Xuzhou Medical University. He has accumulated 16 years of professional experience in immunization programs, focusing on vaccine-preventable disease control, paediatric vaccination strategy optimization and phase 3/4 vaccine clinical trials, and has led over ten strategy optimization research projects with total funding exceeding 10 million RMB. He serves as an editorial board member of multiple international vaccine and infectious disease journals and has published 35 first/corresponding-author English and Chinese papers with a cumulative impact factor over 100 in the past five years. As a national-level expert on immunization technical working groups, he specializes in evidence-based optimization of childhood immunization schedules and population vaccination delivery systems, which aligns closely with the core theme of this Article Collection.