ArticleAmerican journal of preventive medicine2021
Vaccine Delay and Its Association With Undervaccination in Children in Sub-Saharan Africa.
Article in American journal of preventive medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.
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Who cites it
28 citing papers in PubMed, 3 syntheses or guidelines pooled it.
- Prevalence of missed opportunities for vaccination (MOV) indicators among children aged 12-23 months in sub-Saharan African countries: An individual-level meta-analysis of DHS and MICS national household data surveys.Human vaccines & immunotherapeutics · 2025Pooled it
- Human papillomavirus vaccine uptake and its determinants among women in Africa: an umbrella review.Frontiers in public health · 2025Pooled it
- Madagascar's EPI vaccine programs: A systematic review uncovering the role of a child's sex and other barriers to vaccination.Frontiers in public health · 2022Pooled it
- Timeliness of measles vaccination in selected districts of Oromia Region, Ethiopia - 2021.Vaccine: X · 2026Article
- Routine immunization uptake and timeliness in young children exposed to multidrug-resistant tuberculosis: A secondary analysis of the Tuberculosis Child Multidrug-Resistant Preventive Therapy multi-site randomised controlled trial.BMC global and public health · 2026Article
- Timely vaccination coverage and associated factors among children aged 12-23 months in Arbaminch Town, Ethiopia, 2024.BMC public health · 2026Article
- Association Between HPV Vaccination and Cervical Dysplasia Severity in HPV-Positive Women.Diagnostics (Basel, Switzerland) · 2026Article
- COVID-19 vaccine hesitancy in Chinese residents: A national cross-sectional survey in the community setting.Human vaccines & immunotherapeutics · 2025Article
- Article
- Vaccination delay and associated factors among children of age 12-23 months in Gomma district, Oromia, Ethiopia, 2022.Scientific reports · 2025Article
- Overcoming HPV vaccine hesitancy: insights from a successful school-based vaccination campaign in the Saa health district of Cameroon.BMC infectious diseases · 2025Article
- Childhood vaccination trends among the Maasai nomadic pastoralists: Insights from a community-based vaccine registry in Kenya.PLOS global public health · 2025Article
- Starting then stopping: a nationwide register-based study on the magnitude, predictors, and urban-rural patterns of under-vaccination variation across health centers in The Gambia.Global health action · 2024Article
- Review
- Further analysis of tuberculosis in eight high-burden countries based on the Global Burden of Disease Study 2021 data.Infectious diseases of poverty · 2024Article
- Exploring influential factors in childhood vaccine delays in Riyadh, Saudi Arabia.Journal of family medicine and primary care · 2024Article
- Article
- Timely Vaccination and Its Associated Factors Among Parents With Children Aged From 0 to 23 Months in Wolaita Zone Public Hospitals, Southern Ethiopia, 2024: A Facility-Based Cross-Sectional Study.Global pediatric health · 2024Article
- Spatial pattern and associated factors of timely vaccination in Ethiopia using EDHS-2016 data: A multilevel and spatial analysis.PloS one · 2024Article
- Article
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6 authors.
Funding
Abstract
introductionImproving the timeliness and completion of vaccination is the key to reducing under-5 childhood mortality. This study examines the prevalence of delayed vaccination for doses administered at birth and age 6 weeks, 10 weeks, 14 weeks, and 9 months and its association with undervaccination among infants in Sub-Saharan Africa.
methodsPooling data across 33 Sub-Saharan Africa countries, vaccination timing and series completion were assessed for children aged 12-35 months who were included in the immunization module of the Demographic and Health Surveys conducted between 2010 and 2019. Survey design-adjusted logistic regression modeled the likelihood of not fully completing the basic immunization schedule associated with dose-specific delays in vaccination. Data were obtained and analyzed in May 2020.
resultsAmong children with complete date records (n=70,006), the proportion of children vaccinated with delays by ≥1 month was high: 25.9% for Bacille Calmette-Guerin (at birth); 49.1% for the third dose of pentavalent combination vaccine (at 14 weeks); and 63.9% for the first dose of measles vaccines (at 9 months). Late vaccination was more common for children born to mothers with lower levels of educational attainment (p<0.001) and wealth (p<0.001). Controlling for place, time, and sociodemographics, vaccination delays at any dose were significantly associated with not completing the immunization schedule by 12 months (Bacille Calmette-Guerin: AOR=1.93, [95% CI=1.83, 2.02]; pentavalent 3: AOR=1.50 [95% CI=1.35, 1.64]; measles: AOR=3.76 [95% CI=3.37, 4.15]).
conclusionsTimely initiation of vaccination could contribute to higher rates of immunization schedule completion, improving the reach and impact of vaccination programs on child health outcomes in Sub-Saharan Africa. SUPPLEMENT INFORMATION: This article is part of a supplement entitled Global Vaccination Equity, which is sponsored by the Global Institute for Vaccine Equity at the University of Michigan School of Public Health.
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