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.
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.
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.
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.
A study of the staggered roll-out of measles vaccination in Matlab, Bangladesh, which started in the early 1980s, found that boys vaccinated before 12 months of age were 7.4% more likely to be enrolled in school than boys who were never vaccinated or vaccinated later in childhood, while measles vaccination had no effect on girls’ enrolment in school.
This may suggest that poor health, resulting from complications of measles that can lead to deficits in physical and cognitive development, affected schooling decisions for boys in Bangladesh, but not for girls.
A 2019 analysis of survey data from school aged children in Ethiopia, India and Vietnam shows that children vaccinated against measles achieved 0.2 – 0.3 years of additional schooling compared to children who did not receive the measles vaccine.
A 2019 analysis of survey data from India, Ethiopia and Vietnam found that children vaccinated against measles scored better on cognitive tests of language development, math and reading than children who did not receive measles vaccines.
Children of Bangladeshi mothers younger than 34 years were more than three times as likely to have incomplete vaccination compared to children of mothers older than 35 years.
Children of unemployed mothers in Bangladesh were 1.5 times as likely to have incomplete vaccination status compared to children of employed mothers. Maternal unemployment was also significantly linked to delays in BCG and measles vaccinations.
An analysis of data from three studies showed that the rates of severe pneumonia in infants in their first six months of life was 20% lower overall in infants whose mothers received the influenza vaccination during pregnancy than in infants whose mothers had not, and the rates of severe pneumonia was 56% lower during periods when influenza circulation was highest. These findings correspond with evidence that influenza infection predisposes individuals to pneumococcal infection.
The incidence rate of severe pneumonia in the vaccine group compared to the control group was 43% lower in South Africa, 31% lower in Nepal, but not significantly different in Mali.
