In the summer of 2008 CDC implemented methodological changes to the PES, the tool used by CDC to allocate vaccine funding to grantees. AIM conducted a survey to explore the impact of the PES changes. Data was utilized by the AIM Finance Committee to communicate concerns to CDC regarding the impact of changes to the PES on grantee funding awards.
Impact of Population Estimation Survey (PES) Changes on Immunization Programs
Related Resources
Vaccine Implementation Project
AIM’s Vaccine Implementation Project aims to improve readiness and implementation of new immunization products and changes to existing recommendations in the U.S.
Understanding Historical Partner Engagement in U.S. Vaccine Implementation: An Environmental Scan to Guide Future Planning to Support Immunization Programs Poster
This AIM poster was displayed at the 2026 NAIIS Meeting and examines partner engagement to implement vaccine recommendations.
2025 AIM Annual Survey of Federally Funded Immunization Programs Poster
This AIM poster was displayed at the 2026 NAIIS Meeting and highlights a portion of the results from the 2025 AIM Annual Survey.
