Vaccination status and clinical outcome of COVID-19 in hospitalized patients

Objective: to analyze the relationship between the vaccination status of patients hospitalized for COVID-19 and clinical outcomes. Methods: retrospective cohort study conducted at a referral hospital for COVID-19, including 305 patients ≥ 5 years of age admitted to wards and/or intensive care units...

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Bibliographic Details
Main Authors: Priscila Poli, Gustavo Diego Magno, Silvia Carla da Silva André Uehara
Format: Article
Language:English
Published: Universidade Federal do Ceará 2025-08-01
Series:Rev Rene
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Online Access:https://periodicos.ufc.br/rene/article/view/95529/252043
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Summary:Objective: to analyze the relationship between the vaccination status of patients hospitalized for COVID-19 and clinical outcomes. Methods: retrospective cohort study conducted at a referral hospital for COVID-19, including 305 patients ≥ 5 years of age admitted to wards and/or intensive care units with a diagnosis of COVID-19. Hospitalization data were collected from electronic medical records, and vaccination status data were obtained from the VaciVida system. The analysis was performed using Poisson regression models. Results: the comparison between patients who did not receive any vaccine doses and those who received a booster dose showed a relative risk of 1.46 (p = 0.160), suggesting an increased risk of death among the unvaccinated; however, this was not statistically significant. The comparison between unvaccinated individuals and those with an incomplete vaccination schedule revealed a relative risk of 2.42 (p = 0.350). Conclusion: it was observed that most patients who died or required intensive care did not have a complete vaccination schedule, which points to a possible trend toward worse outcomes among unvaccinated individuals. Contributions to practice: the findings underscore the importance of vaccination and active surveillance of clinical factors associated with severity to inform management in patients with COVID-19.
ISSN:2175-6783