ArticleVaccines2021
Disparities in COVID-19 Vaccination among Low-, Middle-, and High-Income Countries: The Mediating Role of Vaccination Policy.
Article in Vaccines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
52 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Inequality in the distribution of Covid-19 vaccine: a systematic review.International journal for equity in health · 2022Pooled it
- COVID-19 vaccine acceptance and rejection in an adult population in Bosnia and Herzegovina.PloS one · 2022Trial
- Quantifying Epidemiological Risk Transitions of COVID-19 in the Brazilian State of Ceará (2020-2023): A Generalized Linear Modeling Approach.Epidemiologia (Basel, Switzerland) · 2026Article
- Combination Vaccines in Routine Childhood Immunization Programs - Worldwide, 2024.China CDC weekly · 2026Article
- Visual analysis of the research frontiers, hotspots and development trends of immunization programs for women and children.Human vaccines & immunotherapeutics · 2025Article
- Article
- Review
- Estimating behavioural relaxation induced by COVID-19 vaccines in the first months of their rollout.PLoS computational biology · 2025Article
- Strengthening Vaccine Regulation: Insights from COVID-19 Vaccines, Best Practices, and Lessons for Future Public Health Emergencies.Vaccines · 2025Article
- The role of mRNA vaccines in infectious diseases: a new era of immunization.Tropical diseases, travel medicine and vaccines · 2025Review
- COVID-19 vaccine uptake and associated factors among high school students in Lemi Kura Sub-City, Addis Ababa, 2022.Frontiers in public health · 2025Article
- Article
- Burden of acute and long-term COVID-19: a nationwide study in Bahrain.Frontiers in public health · 2025Observational
- Factors associated with COVID-19 vaccination rates in countries with different income levels: a panel analysis.BMC public health · 2024Article
- A systemic evaluation of COVID-19 vaccination drives in LICs, LMICs, UMICs, and HICs: Preparedness for future pandemics.Journal of family medicine and primary care · 2024Article
- COVID-19 Vaccination and Public Health: Addressing Global, Regional, and Within-Country Inequalities.Vaccines · 2024Review
- A brief review on the lessons learned from COVID-19 on drug discovery and research.Medicine and pharmacy reports · 2024Review
- The factors correlated with COVID-19 vaccination coverage in Chinese hypertensive patients managed by community general practitioner.Human vaccines & immunotherapeutics · 2023Article
- Vaccine inequity: a threat to Africa's recovery from COVID-19.Tropical medicine and health · 2023Review
- Vaccine effectiveness of COVID-19 and rebound in the real world.Clinical and experimental medicine · 2023Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
Inequity in the access to and deployment of the coronavirus disease 2019 (COVID-19) vaccines has brought about great challenges in terms of resolving the pandemic. Aiming to analyze the association between country income level and COVID-19 vaccination coverage and explore the mediating role of vaccination policy, we conducted a cross-sectional ecological study. The dependent variable was COVID-19 vaccination coverage in 138 countries as of May 31, 2021. A single-mediator model based on structural equation modeling was developed to analyze mediation effects in different country income groups. Compared with high-income countries, upper-middle- (
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.