What is the Knowledge Hub?
Explore the VoICE Knowledge Hub—a searchable database featuring the latest peer-reviewed research on immunization benefits, especially in low- and middle-income countries. Browse the Knowledge Hub using a variety of different filters to find vaccine evidence based on country, region, topic, or disease. Click on a tag to find more evidence on a specific area, such as the return on investment of vaccines or impacts of infectious disease outbreaks.
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Immunization can improve children’s learning achievements, including reading, writing, and math skills
In a cohort study of 4,877 children using data from the India Human Development Survey, full vaccination was estimated to increase basic reading, writing and math achievements by 6-12% in children 8-11 years old. These results support the hypothesis that vaccination has lasting effects on children’s learning achievements.
Arsenault C, Harper S, Nandi A. 2020. Effect of vaccination on children’s learning achievements: Findings from the India Human Development Survey. Journal of Epidemiology and Community Health. 74(10).
Immunization in India’s Universal Immunization Program improves schooling attainment and economic status for women
In an analysis of the impact of India’s Universal Immunization Program (UIP) on schooling attainment in adults, a subgroup analysis found a strong positive association between UIP implementation and increased school attainment for women. Women born after the UIP rollout attained 0.29 more schooling grades compared women from the same household born before UIP rollout. Among unmarried women, the UIP was associated with an increment of 1.2 schooling years, which corresponds to as much as an INR 35 (US $0.60) increase in daily wages. Thus, the researchers concluded that the UIP is also likely to improve the economic status of women in India.
Nandi A, Kumar S, Shet A et al.. 2020. Childhood vaccinations and adult schooling attainment: Long-term evidence from India’s Universal Immunization Programme. Social Science & Medicine. 250.
Universal immunization programs in India are associated with increased schooling and higher wages for women
An analysis of the impact of India’s Universal Immunization Program (UIP) on schooling attainment in adults found that women born after the UIP rollout attained 0.29 more schooling grades compared women from the same household born before UIP rollout. Among unmarried women, the UIP was associated with an increment of 1.2 schooling years, which corresponds to as much as an INR 35 (US $0.60) increase in daily wages.
Nandi A, Kumar S, Shet A et al.. 2020. Childhood vaccinations and adult schooling attainment: Long-term evidence from India’s Universal Immunization Programme. Social Science & Medicine. 250.
Immunization in childhood can improve adult schooling attainment
Adults who were born after the implementation of India’s Universal Immunization Program (UIP) attained 0.18–0.29 additional grades of schooling compared to adults born before the UIP was implemented in their district of residence. According to the researchers, these findings indicate that childhood immunization could improve adult schooling attainment in India by as much as 10%.
Nandi A, Kumar S, Shet A et al.. 2020. Childhood vaccinations and adult schooling attainment: Long-term evidence from India’s Universal Immunization Programme. Social Science & Medicine. 250.
Immunization rates are low among pregnant adolescents in rural areas with less education and lower wealth
The use of antenatal care (ANC) services among pregnant adolescents in low- and middle-income countries, including tetanus toxoid vaccination, was lowest among women who lived in rural areas, had completed less education, and who were of poorer wealth quintiles.
Banke-Thomas OE, Banke-Thomas AO, Ameh CA. 2017. Factors influencing ultilisation of maternal health services by adolescent mothers in Low- and middle-income countries: a systematic review. BMC Pregnancy Childbirth. 17(1).
Introducing the PCV vaccine in India will save millions of dollars in healthcare costs, especially for the poorest households
An analysis of the potential impact of pneumococcal conjugate vaccine (PCV) in India found that introducing PCV vaccine will protect the population from potentially catastrophic health expenditures due to treatment and hospitalizations for pneumococcal disease – saving an estimated $49-63 million in out-of-pocket expenditures each year, depending on the assumed vaccination coverage rate. Financial protection will be greatest for the poorest households, with the poorest quintile is estimated to have the greatest savings in out-of-pocket expenditures of all wealth quintiles.
Megiddo I, Klein E, Laxminarayan R. 2018. Potential impact of introducing the pneumococcal conjugate vaccine into national immunisation programmes: an economic epidemiological analysis using data from India. BMJ Global Health. 3(3).
Immunizing with pneumococcal conjugate vaccine in India can greatly reduce deaths, especially among the poor
A modeled analysis of the potential impact of pneumococcal conjugate vaccine (PCV) in India estimated that the greatest reductions in deaths due to PCV vaccination would be among the poorest segments of the population. Assuming a vaccination coverage rate of 77% (the current DTP3 coverage rate), PCV would prevent nearly 2.5 times as many deaths per 100,000 children under five in the 2 poorest income quintiles than in the 2 wealthiest groups (313 vs. 134), and nearly 3 times as many deaths per 100,000 if coverage reaches 90% (446 vs. 167).
The model used was specific to the epidemiology, health system situation, and population characteristics of India.
Megiddo I, Klein E, Laxminarayan R. 2018. Potential impact of introducing the pneumococcal conjugate vaccine into national immunisation programmes: an economic epidemiological analysis using data from India. BMJ Global Health. 3(3).
Children of mothers with no education or primary education are more likely to have delayed vaccinations
A study of delayed vaccination in India found that children whose mothers had no formal education were 37-81% more likely to have delayed vaccinations than children of mothers with 12 or more years of schooling [depending on the vaccine]. Children whose mothers had a primary school eduction fared only slightly better with 33-62% greater odds of getting their vaccination late, when compared to those with highly educated mothers.
Data in this analysis was from the National Family and Health Survey 4.
Choudhary TS, Reddy NS, Apte A et al.. 2019. Delayed vaccination and its predictors among children under 2 years in India: Insights from the national family survey-4. Vaccine. 37(17).
Children from the poorest households in India are more likely to have delayed vaccinations, increasing disease risk
Indian children in households from the lowest wealth quintile were 30-95% more likely to be delayed in their vaccinations than those from the wealthiest households [depending on the vaccine]. Delayed vaccination increases the window of susceptibility to vaccine preventable diseases and can lead to outbreaks.
Data in this analysis was from the National Family and Health Survey 4.
Choudhary TS, Reddy NS, Apte A et al.. 2019. Delayed vaccination and its predictors among children under 2 years in India: Insights from the national family survey-4. Vaccine. 37(17).
Tetanus vaccination during pregnancy in India reduces delayed vaccination in children, especially for those born at home
In India, children whose mothers received tetanus vaccination during their pregnancy were 22-31% less likely to have delayed vaccination (depending on the vaccine) than children of unvaccinated mothers. Those born at home were nearly 3 times more likely to receive BCG vaccination late and 41% more likely to receive their first dose of DTP late than those born in a public health facility.
Choudhary TS, Reddy NS, Apte A et al.. 2019. Delayed vaccination and its predictors among children under 2 years in India: Insights from the national family survey-4. Vaccine. 37(17).