ArticleSSM - population health2025
Disparity between expected spatial accessibility and actual travel time to vaccination sites: Implications for COVID-19 immunization delays.
Article in SSM - population health, 2025. 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Household and Community Clustering of Concurrent Vaccine Hesitancy in China: Multicenter Survey.JMIR public health and surveillance · 2026Article
- Institutional factors influencing vaccine access in Canada: a scoping review.BMC public health · 2026Article
- Geospatial analysis of COVID-19 vaccine access in Kenya: the interplay of travel time, perceived availability, and vaccine uptake.Journal of global health · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The COVID-19 pandemic underscored the importance of equitable and timely vaccination access. This study examined the impact of discrepancies between actual and expected travel times to vaccination centers on the timeliness of full and booster COVID-19 vaccinations in Nueces County, Texas. Drawing on vaccination data from over 171,000 individuals aged 18 and older, we employed Cox proportional hazards models and survival analysis to explore how demographic characteristics, the Social Vulnerability Index (SVI), and geographic disparities influenced vaccination delays. Results revealed that longer-than-expected travel times significantly reduced the likelihood of timely vaccination (HR = 0.95 for full vaccination, HR = 0.89 for booster doses). Seniors demonstrated higher vaccination timeliness rates, but gaps persisted across gender, ethnicity, and race, with males and Hispanics experiencing greater delays. Interaction analysis highlighted compounded challenges for seniors and vulnerable populations when travel time discrepancies were larger. These findings emphasize the critical need for geographically targeted public health interventions to address socio-economic disparities and improve vaccine accessibility during health crises.
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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.