Welcome to the Value of Immunization Compendium of Evidence (VoICE)!

VoICE is a project of the International Vaccine Access Center at the Johns Hopkins Bloomberg School of Public Health with the goal of curating and synthesizing  the latest peer-reviewed research, high-quality resources, and advocacy messaging on the many benefits of immunization across topics including health equity, economics, health security, and disease outbreaks.

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Did you know?

For every $1 invested in vaccines in Gavi-supported countries there is a return of investment of up to $54. 

Learn more about the return on investment for immunization   >

VoICE is a project of

made possible with support from

Bill & Melinda Gates Foundation

Evidence Briefs

  • The Power of a Single Dose: Evidence for a Single-Dose HPV Vaccine Schedule¬†

    HPV Vaccination: A Critical Cancer Prevention Tool¬† Since 2006, vaccines have been available to protect against human papillomavirus (HPV), an […]

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  • The Other Pandemic: The Promise of TB Vaccines

    What disease has infected millions of people, killing an estimated 1.5 million people a year, without drawing a fraction of the attention of the COVID-19 pandemic? The answer is tuberculosis (TB). New, more effective vaccines are needed to reduce the morbidity and mortality of TB, fight the rising threat of AMR, and address inequities in…

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  • Vaccines are Key in Combating Antimicrobial Resistance (AMR)

    Antimicrobial resistance (AMR) is a growing threat to the health of children worldwide. New evidence shows how vaccines are one promising way to combat the global spread of AMR. New research on typhoid conjugate vaccines (TCV) shows how immunization can protect children, families, and communities against the emergence of dangerously resistant superbugs.

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International Universal Health Coverage Day 2023

UHC2030 |  December 12, 2023

World AMR Awareness Week

World Health Organization |  November 18 to 24, 2023

2023 Pneumonia & Diarrhea Progress Report Card Released

IVAC  |  November 13, 2023

World Pneumonia Day Symposium

IVAC  |  November 7, 2023

World Polio Day 2023

The Global Polio Eradication Initiative | October 24, 2023

Stay in touch! Sign up for the VoICE newsletter to stay up-to-date with the latest immunization research.