"Humanly Possible": Geographies, Metrics and Methods to Address Immunization Inequalities

Area of Science:

• Global Health
• Pediatric Medicine
• Public Health Policy

Background:

• The World Health Organization's Expanded Program on Immunization (EPI) was established in 1974.
• EPI aims to ensure equitable access to essential vaccines for all children.
• The program has been instrumental in reducing vaccine-preventable diseases globally.

Discussion:

• The 50th anniversary provides an opportunity to review EPI's impact and challenges.
• Analysis of EPI's success factors and areas for improvement is crucial.
• Adapting EPI strategies to current global health challenges, such as emerging infectious diseases and health system strengthening, is essential.

Key Insights:

• EPI has dramatically reduced child mortality from diseases like measles, polio, and diphtheria.
• Sustained political commitment and international partnerships have been vital to EPI's success.
• Vaccination coverage remains uneven across regions, highlighting persistent equity gaps.

Outlook:

• Future efforts should focus on reaching zero-dose children and strengthening routine immunization systems.
• Innovations in vaccine technology and delivery, including the role of new vaccines, will be critical.
• Continued investment and tailored strategies are needed to achieve universal immunization coverage and global health security.