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

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Evidence Briefs

Find concise insights on critical topics ranging from AMR to nutrition

Knowledge Hub

Browse our database of peer-reviewed immunization evidence by topic

Advocacy

Access a toolkit of immunization advocacy resources

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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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