PROJECT ABSTRACT Immunizations are one of the most effective types of health interventions available. This research study will provide relevant information for a variety of stakeholders, including ACIP members, CDC decision makers, patients, parents, providers, and payers, through the development and implementation of economic survey studies that will answer a series of research questions that directly address the Healthy People 2030 Objectives relating to vaccination and vaccination coverage. Working jointly with CDC co-investigators, the PAVVE research team will identify and prioritize vaccination survey topics, design and implement surveys, in order to provide timely data for high-priority immunization policy decisions. Working collaboratively with CDC scientists and PAVVE investigators, we will employ innovative economic survey methods across 6 studies to inform vaccine policy decisions. The overall goal of this research study is to obtain information to inform vaccine policy and the development of effective interventions to optimize vaccination uptake.