The Value of Immunization Compendium of Evidence
Explore the VoICE Evidence
VoICE is a searchable database intended to support immunization, child health and global health advocates by synthesizing evidence of the broader value of vaccines. The compendium contains sources illustrating the impact that vaccines, and vaccine-preventable diseases, can have on the health, economic status, societal well-being, equity, and other factors affecting families and nations worldwide.
The Health topic in VoICE focuses on the lesser known physical costs of vaccine-preventable diseases, and the health benefits of vaccines beyond the direct prevention of disease.
Featured Health sourceView Source >
A study of Kenyan children under 5 years of age found that immunization with polio, BCG, DPT and measles to be protective against stunting in young children; 27% less likely to be stunted than unimmunized children under age 2 years. In addition, children with diarrhea and cough in the 2 weeks prior to the survey were 80-90% more likely to be underweight or to suffer from wasting.
This topic looks at how vaccine-preventable disease impacts a child’s education, and synthesizes the evidence of immunization’s protective effects on a child’s ability to attend school, stay in school, and perform well in school.
Featured Education sourceView Source >
For every 6 children vaccinated with measles vaccine in a poor, largely rural community in South Africa, one additional grade of schooling was achieved.
The Economics topic of VoICE covers system- or national-level measures such as cost-effectiveness, productivity loss and return on investment. We also look at the ways in which poverty and costs of illness are influenced by vaccine-preventable diseases and averted by vaccines, both nationally and for individuals and their families.
Featured Economics sourceView Source >
Vaccines that can protect against pneumonia – Hib and S. pneumoniae vaccines – can together prevent over 1.25 million cases of poverty over 15 years, found researchers modeling the economic impact of immunization in 41 low- and middle-income countries.
The Equity topic in VoICE examines the many ways in which equity can be measured – geographically, socially, economically, by disease risk, etc. – and the ways in which equity frames nearly every aspect of vaccine-preventable disease distribution and vaccine impact.
Featured Equity sourceView Source >
Inequity in vaccination coverage in India was found between states, within states, and in urban vs. rural. Lower parental education resulted in lower coverage, girls had lower coverage than boys and infants born to families with a large number of children also had lower coverage than others. A direct relationship between household wealth and coverage was also found.
This section looks at how immunization efforts can mutually reinforce other health and social programs, and the provision of health services. We also look at how vaccines can strengthen health systems, both by increasing preparedness and by alleviating pressure on overtaxed systems and medical facilities.
Health Systems & Integration topics:
Featured Health Systems & Integration sourceView Source >
In the Americas, a platform built to secure polio eradication has been expanded to help track, control, prevent and monitor immunization impact for measles and rubella. In India, highly trained polio health workers have become the basis for a trained workforce working towards the elimination of measles and rubella and helping ensure India’s certification by WHO for having eliminated maternal and neonatal tetanus.
This cross-cutting section examines the linkages between large-scale current issues – such as humanitarian emergencies and antibiotic resistance – and vaccination, and illustrates how vaccination can either work to prevent the escalation of these threats, or to protect critically vulnerable groups from their negative impacts.
Global Issues topics:
Featured Global Issues sourceView Source >
Large measles outbreaks occurred in Lebanon and Jordan, following an influx of Syrian refuges migrating to escape conflict. In Lebanon, the measles incidence increased 200-fold in one year following high migration. There were 2.1 measles cases per million population in Lebanon in 2012; this increased to 411 cases in 2013.
World Immunization Week, 24-30 April 2018
Leveraging the theme of Protected Together #Vaccineswork, the VoICE team has developed social media content pairing evidence from the compendium with the priority messaging areas of WIW2018 advocacy partners.
Explore our featured issues
Check out our new Featured Issue — NEW RESEARCH CLIFF NOTES: Equity and Poverty Reduction Impact of Vaccines
We've added new evidence in the following areas:
- Conflict and Humanitarian Emergencies
- Return on Investment
- Growth, Development, and Nutrition
The vicious cycle of undernutrition and infectious disease: How does it work and what role do vaccines play?
Undernutrition and infectious diseases are tightly linked in a self-reinforcing cycle. Childhood episodes of diarrhea, pneumonia and measles are exacerbated by undernutrition, which significantly contributes to the death toll from these infections. In this feature, the VoICE team explains the cycle of malnutrition and infectious disease, and brings you evidence of the ways in which vaccines interrupt this cycle and help to protect the overall health, growth and physical development of vulnerable children.