ArticleJournal of thoracic disease2024
Effect of COVID-19 vaccine in adults infected with the Delta variant of SARS-CoV-2: a retrospective cohort study.
Article in Journal of thoracic disease, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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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
2 citing papers in PubMed.
- Breakthrough COVID-19 infections among healthcare workers at a tertiary care hospital in Beirut: Prevalence and determinants.IJID regions · 2026Article
- Prognosis of critically ill immunocompromised patients with COVID-19 admitted for acute respiratory failure: a retrospective propensity score analysis.Journal of thoracic disease · 2025Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Reducing mortality among those infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) remains a critical challenge in clinic. The objective of this study was to analyze the effect of the coronavirus disease 2019 (COVID-19) vaccine on the prognosis of individuals infected with the Delta variant of SARS-CoV-2. Methods: In a single-center, retrospective cohort study, all adult patients with COVID-19 from designated hospital in Xi'an, China, during the Delta outbreak from December 2021 to January 2022 were enrolled. The patients were divided into two groups according to whether they received the COVID-19 vaccine, and differences in clinical outcomes (pneumonia, oxygen therapy, severe disease, and mechanical ventilation or death), symptoms, and nucleic acid-negative time between the two groups were compared. Results: A total of 651 adult patients with COVID-19 were included, among whom 578 were vaccinated and 73 were not vaccinated. Compared with the unvaccinated group, the vaccinated group had lower rates of pneumonia (49.8% Conclusions: Vaccination may reduce the risk of oxygen therapy, severe illness, and mechanical ventilation or death in patients with Delta variant COVID-19, as well as the incidence of pneumonia. Vaccinated patients had a higher incidence of sore throat and a lower incidence of shortness of breath, diarrhea, and nausea or vomiting compared to nonvaccinated patients. Vaccination did not shorten the time for the emergence of nucleic acid-negative status.
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