ArticleVaccines2023
Access to DTP-Based Combination Vaccines in Asia-Pacific Countries between 2019 and 2022.
Article in Vaccines, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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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.
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Who cites it
3 citing papers in PubMed.
- Seroprevalence of diphtheria, tetanus, pertussis among healthcare workers (HCWs) - A cross-sectional study at the National Centre for Infectious Diseases and Tan Tock Seng Hospital, Singapore.Human vaccines & immunotherapeutics · 2026Article
- Article
- Access to antimalarial drugs in the Asia-Pacific region during health emergency: a multinational cross-sectional investigation between 2020 and 2022.Global health research and policy · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
The Asia-Pacific countries are highly diverse in health and economic conditions that may impact vaccine access and uptake. Our study aimed to characterize patterns of health access to DTP-based combination vaccines in 10 countries from 2019 to 2022 using the IQVIA-MIDAS database. The availability, affordability, and accessibility were compared across countries by national health and economic performance indicators using Spearman's rank correlation coefficient. Our findings showed that the three aspects of access to DTP-based vaccines varied substantially in the Asia-Pacific region, with higher levels in countries with better health and economic performance. Affected by the COVID-19 pandemic, vaccine accessibility fluctuates significantly in lower-income countries, with DTP coverage rates falling by more than 14% in the Philippines and Indonesia between 2019 and 2021. For availability and affordability, Singapore and Malaysia from high-income groups were largely affected, which may be related to health expenditure as a percentage of gross domestic product (Coefficient = 0.39,
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Registered trials
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