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Prevalence and correlates of never vaccinated Nigerian children, aged 1-5 years
Onyema Greg Chido-Amajuoyi1, Chizoba Wonodi2, Dale Mantey3
1Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Unit 1340, PO Box 301439, Houston, TX 77230-1439, USA.
Insights
Twenty-one percent of Nigerian children aged 1-5 years are unvaccinated. Poverty, maternal unemployment, and Northern region residence are key factors associated with this lack of childhood vaccination.
Area of Science:
- Public Health
- Pediatrics
- Sociology
Background:
- Nigeria faces challenges with childhood immunization coverage and high child mortality rates.
- A significant population of Nigerian children, aged 1-5 years, remain unvaccinated.
- The characteristics of this unvaccinated population have not been previously well-defined.
Purpose of the Study:
- To investigate the prevalence of never-vaccination among Nigerian children.
- To identify the socio-demographic correlates of never-vaccination in this population.
- To explore region-specific predictors of never-vaccination in Northern Nigeria.
Main Methods:
- Secondary analysis of the 2013 Nigeria Demographic Health Survey data.
- Inclusion of Nigerian children aged 12-59 months (n=20,586).
- Weighted multivariate logistic regressions, stratified by Northern and Southern regions, to examine associations between socio-demographic factors and never-vaccination.
Main Results:
- Approximately 21% of the study sample had never received any vaccines.
- Over 80% of never-vaccinated children resided in Northern Nigeria.
- Never-vaccination was significantly associated with poverty, maternal unemployment, and lack of maternal education. In Northern Nigeria, Islam and limited media access increased odds, while higher maternal age and rural residence decreased odds.
Conclusions:
- Socio-demographic factors are significant predictors of childhood never-vaccination in Nigeria.
- Further research is required to understand the contextual factors contributing to never-vaccination.
- Investigating the mechanisms of region-specific predictors is crucial for targeted interventions.
Introduction:
A unique population of Nigerian children, aged 1-5 years, never receive any of the recommended childhood vaccines. However, the characteristics of this population has not been previously described. Given Nigeria's historically poor childhood immunization coverage and high child mortality rates, it was imperative we investigate the prevalence and correlates of never-vacccination among Nigerian children.
Methods:
We conducted secondary analysis of the 2013 Nigeria Demographic Health Survey data of Nigerian children, aged 12-59 months (n = 20,586). Weighted multivariate logistic regressions were used to examine the relationship between socio-demographic factors and never-vaccination of Nigerian children. Further regression analysis was conducted after stratifying by Northern and Southern regions.
Results:
About twenty one percent of study sample, had never been vaccinated. Over eighty percent of the never-vaccinated children in our study resided in the Northern geopolitical zones of Nigeria. Child never-vaccination was found to be significantly associated with key socio-demographic characteristics. Children born into poor households, with mothers who are unemployed and uneducation, were more likely to be never-vaccinated. Unique predictors of child never-vaccination specific to Northern Nigeria were identified. Islam (aOR: 1.56, 95% CI: 1.11-2.17) and lack of access to Television or Radio (aOR: 1.49, 95% CI: 1.22-1.81) promoted never-vaccination, while increasing maternal age and rural residence (aOR: 0.63, 95% CI: 0.42-0.95) were associated with lower odds of never-vaccination.
Conclusion:
Socio-demographic factors are predictors of child never-vaccination in Nigeria. Further investigations are needed to better understand the underlying contexts that conribute to child never-vaccination in populations identified in this study. More so, it is important to examine the mechanism through which predictors that are region-speific, culminate in child never-vaccination.
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