Immunization Data: Evidence for Action

A realist review of what works to improve data use for immunization


The IDEA review is a global synthesis of existing evidence aimed at increasing the use of high-quality data to improve immunization coverage.

Funded by the Bill & Melinda Gates Foundation and developed in partnership between PATH and the Pan American Health Organization (PAHO), the IDEA review provides a clearer picture of what works to improve immunization data use, why it works, and where knowledge gaps still exist.

The use of high-quality data is widely understood in the global health community to be a cornerstone of well-functioning health systems. However, despite continuous growth in the amount of health data available, the actual use of data in immunization program decision-making remains a challenge.

Find the IDEA finding that inspires you and share how you plan to act on it.


The IDEA report is now available on TechNet-21. That will be the permanent home for all IDEA materials when this website is retired at the end of 2019.

Find your finding

For Policymakers

The IDEA review gives policymakers the sharpest look yet at how to improve the use of routine data for immunization decision-making.


For Implementers

The IDEA review highlights what has worked and what has not worked to improve data use in other immunization programs, allowing implementers to make evidence-based decisions on how to allocate resources to improve data use.


For Funders

The IDEA review helps build a common knowledge and understanding among investors in global health of what works to improve immunization data quality and use, why it works, and where more investment is needed.


By Intervention

The IDEA review identifies evidence on the intermediate outcomes of data use interventions on data quality, availability, analysis, synthesis, interpretation, and review.


The Gap Map Visualization

This data visualization shows all the pieces of evidence and promising strategies according to the intermediate data use outcomes, data use actions, and impact indicators to which they pertain.


A collaborative project

The IDEA review was guided by a steering committee, which was composed of global and regional senior leaders in the areas of immunization, data quality, and use from PAHO, WHO headquarters, the Bill & Melinda Gates Foundation, PATH, US Centers for Disease Control and Prevention (CDC), United Nations Children’s Fund (UNICEF), Gavi, and the Swiss Tropical and Public Health Institute (Swiss TPH), as well as country representatives from both the BID Learning Network (BLN) and Improving Data Quality for Immunizations (IDQi) project core countries.